Friction Drive Telescope Mount

This system is renowned for high precision and reliability. 25" accessories 9x50 Finder Scope to help accurately. Attach the included EQ-3M Telescope Drive's precision mini-motor onto the AstroView EQ Mount to track celestial objects automatically. An altazimuth telescope's drive rates vary continuously, When driving the mount the motors prefer it if in today's epoch coordinates. In fact, wonder of wonders, it weighs only 3. The design of the worm support structure and large diameter precision tapered conical worm bearings result in a drive system with uncommon torsional rigidity, making the GM2000 particularly adept at handling long refractors. An amateur astronomer in Korea made a harmonic drive telescope using machined aluminum. Full text of "MSFC Skylab Apollo Telescope Mount" See other formats. A 10” telescope offers an upgrade from an 8” of nearly 50% extra light gathering power, meaning brighter images, better resolution and greater colour saturation. Configurable telescope mount system. Normally the parking position is when the balance weights point downwards and telescope pointing towards North pole (or South pole). has some flex along RA. Celestron's CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. The best model of this buying guide is the Celestron NexStar 1100 HD Deluxe. Here is a view of the platform without the telescope sitting on it. 5 homemade telescope. Allen wrenches are stowed beneath the rubber mount base, for adjusting the stiffeness of the altitude and azimuth axes. Please specify your requested options in your payment for the deposit. A Friction-drive Fork Mount by Dave Rowe Nothing is more important for successful astrophotography than the telescope's mount. Gemini Telescope Design G53F friction drive german equatorial mount This German Equatorial mount tracks the stars with the highest precision in its category. Read the Advanced Polaris Manual here. 5 meters, and a slit 1. Click here for dimensions and ordering. (Current data indicates that the TNT slews the LightBridge 12" at about 7x to 8x. ) When using auto guiding, the mount reacts immediately, so corrections are very fast and completely free of play. Ensure gear on motor meshes with the shaft gear assembly. With a stiffer construction, better cable managament, brake mechanism for both axises and (de)coupling mechanism for the two servo motors, it is an improvement on it's predecessor. 000-inch shaft diameter. With the trend towards bigger and bigger aperture of the optical telescopes, there are some reports about friction drive employed to drive the telescopes. A plurality of balls are placed in the races to constitute a ball bearing so that the. For information or advice call 020 8763 9953 or email [email protected] PlaneWave Instruments is proud to introduce its new L-Series direct drive mount system. Includes a micro USB power adapter to provide external power. The Celestron EdgeHD is an aplanatic flat-field Schmidt optical system designed to produce aberration-free images with pinpoint stars all the way to the edge of the field of view of today’s largest imaging sensors and wide field eyepieces. The mount reaches a satellite tracking and positioning speed of 10 deg/sec. iOptron SkyGuider Pro Camera Mount Full Package #3550. Setting Ideas Into Motion Since 1950, design engineers have depended on SDP/SI for high-quality components, subassemblies, and engineering expertise. To meet these demands, we made a telescope mount with fork-type friction drive system and with servo motors on both axes, enabling precise tracking as well as fast slewing with up to 5 o /second. friction drive, worm gear, etc. loosening the bolt to free the OTA, 4. A belt drive connects the 55 tooth gear to a 12 tooth gear on the stepper motor. MOTODEC is a battery operated hand control with an electric declination motor providing vibration-free, direct-drive declination adjustments necessary for visual and photographic use. I made do with the materials and tools I have, and I'm happy it works! EDIT: It's a bit odd to drive the rotor from the top bearing, but based on my calculations, that force exerted on the drive bearing by the weight of the assembly is about the same as if I had used on of the bottom edge. The DiscMount was designed with Patented Variable Friction Control along with a large friction disc. The Alt-azimuth mount is commonly used in affordable telescopes because it’s easy to use. $\endgroup$ – Olin Lathrop Apr 19 '16 at 21:46. Capturing pin sharp stars at 200 mm or more focal length has never been. The entire drive mechanism is otherwise my design. First loosen hexagonal socket. When a car is moving under power, the clutch is engaged. Gemini Telescope Design (short name GTD) is a company based in Italy. mesu-optics. The first stage is a worm gear with a backlash free spring loaded worm assembly. The gear is fit onto a slip clutch with a knurled friction adjustment ring. The telescope impacts visual detection differently depending on the type of object. Gemini had announced that they had developed a new friction drive mount, the G53F and Daniel and myself ended up buying two units, which turned out to be only the second and third ones in existence. drives for eliminating the backlash. Full text of "MSFC Skylab Apollo Telescope Mount" See other formats. As with most newly developed devices, it was expected that there would be some teething problems. All mounts are designed and manufactured by. 96 Nm in the declination (dec. Normally the parking position is when the balance weights point downwards and telescope pointing towards North pole (or South pole). EQ-3M single- and dual-axis computerized drive systems are available separately. 2 Friction lockedjoints 40 6. Telescope Mount and Optical Tube Assembly. 00 shipping. First to use thin etched virgin teflon. Capturing pin sharp stars at 200 mm or more focal length has never been. The new AstroTrac 360's advanced friction drives and optical encoders delivers best unguided tracking performance!. The new telescope tube, mirror box, and mount, along with ancillary systems were manufactured by OMI (Optical Mechanics Incorporated) during 2011/2012, and initially installed in the dome structure during Aug. LARGE TELESCOPES are defined as 14 inch diameter mirrors and upwards and could be on FORK, GERMAN , ENGLISH or other Equatorial mounts with worm, friction or chain drives. And not only is it compact - it's more accurate than ever. The fine friction strip makes the movement of the mount very balanced. Springloaded worm assembly for zero backlash: Altitude Drive: Ø120mm bronze worm gear drive. I am also thinking about painting the un-machined cast surfaces orange to match the tripod. The Celestron CGX-L Telescope Mount is Available at High Point Scientific. Go-Tos generally use friction drives on the altitude and azimuth axes, which can be engaged or disengaged to change between 'go-to' and 'push-to'. It's all junkbox stuff and telescope leftovers; the focusing mount was the very first one I had bought with my allowance at the American Science Center in Chicago in 1966. The DiscMount was designed with Patented Variable Friction Control along with a large friction disc. Scopes and Testimonials. When the Mesu-Mount 200 was originally released it shipped with a ServoCat mount controller for basic operation and an Argo Navis Digital Telescope Computer hand controller to add full Go-To functionality. Stationary latitude knob with a newly-designed linkage system greatly reduces the amount of friction when polar aligning the mount. Celestron's newly designed CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. Friction drive and bearing of tube and fork are original Pressberger type. The telescopes are usually balanced; such that you just need enough torque to get the scope moving. First loosen hexagonal socket. The second stage is an internal friction drive. I got a lot of ideas when building a 144-servo driven motor mount for the 40-inch primary objective mirror. Because couple of my friends were happily using Gemini G42+, the predecessor of G53F (F stands for friction drive mount) for even unguided imaging, it was a clear choice which mount will be my final one The choice was sooo easy because you get top-notch performance for half of the costs of e. A 55 tooth gear was tapped to drive the 1/4-20 rod. Patent-pending StarSense sky recognition technology uses your smartphone to analyse star patterns overhead and calculate its position in real time. All-new ergonomic adjustment knobs with reduced friction for smooth and easy positioning under full loads. Gilles Gagnon converted an Astro-Physics AP400 mount to OnStep, using the MiniPCB board, and NEMA11 motors. QHYCCD QHY290M Monochrome COLDMOS Camera Back-illuminated (BSI) CMOS Sensor The QHY290 uses an extremely sensitive BSI CMOS sensor, the Sony IMX290. The design of this unique product is based on the following important concepts. I recently won an Alvan Clark 3 inch telescope on an auction site. The Mesu-Mount 200MKII comes with a robust counterweight bar included. Telescope Mount: Convert from tangent arm drive to friction drive: 1. Heavy Duty belt-drive system minimizes backlash while providing smooth motor operation under heavy loads Spring-loaded brass worm wheel and stainless steel worm gear reduce friction and provide optimum gear mesh; Internal cabling for worry-free remote operation. Description. Even a slight breeze can give you big problems with a mount that is too small for the telescope. ) The azimuth friction drive also allows you to move the telescope around by hand without unlocking any clutches. the mount which is caused by inaccuracy of of worm. It is based on a system of ball bearings rolling between two surfaces while housed within a rotating bushing. Although there are examples of use of even heavier telescopes up to 100kg, the recommended maximum load is about 80kg for this telescope mount when used for imaging. 405 New Meadow RdBarrington RI 02806 USA Questions? Contact us at:[email protected] Reduce the friction of the azimuth rotation by swapping two pieces of teflon for ball transfer's (see dobsonian tips). The Orion U-Mount offers a very solid platform for your large binocular, small telescope or even spotting scope, whether you are star gazing or viewing terrestrial objects. First no tools assembly, no tools primary collimation. Capable of carrying Celestron’s largest optical tubes with ease, CGX-L is designed for backyard observatories and remote imagers looking for exceptional load capacity to weight ratio, compact design, and innovative features that fully support large. A pitch-yaw gimbal mount is used for fine pointing, providing orthogonal axes when nominally on target. for both axises and (de)coupling mechanism for the two servo motors, it is an improvement on it's predecessor. Another consideration when choosing a telescope is the mount – the part the optical tube assembly sits on. Gimbal Mirror Mounts A gimbal mount has axes of rotation which intersect at the center front surface of the optic. If you needed 15 W at 10 m/s, then you'll need 1. the ¼ Hitch Mounts advertised elsewhere on this site also use a roller friction drive system. It works fine, except that the azimuth friction drive has some "dead" spots where it will slew over then stop and just spin the motor without actually slewing the mount. Custom Optics and Telescopes. Instrument shown: 1. 5 arcseconds) Unguided exposures possible for up to 300 second exposures. The Polar Disk Mount is finally ready for my 6" f/7. The Bresser Messier 10" Dobsonian Telescope builds on the success of the smaller 8" model to deliver a telescope with nearly double the light gathering power. Dob mount short for Dobsonian. When the mount is adjusted, only the beam's angle changes, not its length. It is the most lightweight and portable of the three size models. The telescope, located at the Kitt Peak National Observatory, uses an Elevation-Azimuth mount. DEC rate = 3. A shortened mount profile creates a more compact mount that is easier to carry and assemble but also improves the mounts central gravity boosting load capacity. With an optical tube assembly weighing only 28 lbs. The new AstroTrac 360's advanced friction drives and optical encoders deliver even better unguided tracking performance than the AstroTrac. 1899 Catalog, Astronomical and Terrestrial Telescopes, 6 pages. 800" diameter 7075 aluminum gear with 180 teeth for incredibly accurate tracking. An altazimuth telescope's drive rates vary continuously, When driving the mount the motors prefer it if in today's epoch coordinates. General Considerations The desiderata are a telescope of about 2. Its 315 teeth have a lead variation of less than. Incremental Encoder based friction drive. This one had a full german equitorial with a friction brake on the south end of the polar axis. Mobile high-end telescope mount with unique friction drive SEM SCANNING OPTICAL INSTRUMENTS PROTOTYPES Matrix, features and more details: www. Truss Telescopes. This spectacular telescope makeover can turn your mediocre-performing telescope into a performance giant with minimum backlash, firm clamping capability, precision tracking and GO TO drive performance, total de-greasing and backlash adjustment and careful protective wire routing. The Celestron CGX-L Telescope Mount is Available at High Point Scientific. We captured three images with the highest dynamic range, unit gain, and lowest read noise settings. This is destined for my telescope mount. 2 DRIVE REQUIREMENTS 23 5. With my 12 inch f/6 dobsonian I have experienced both problems and this is how I solved them. To mount the telescope tube: 1. The rod end needs to be tapped since it has no threads (my modeling skills are up to making threads yet). QHYCCD QHY290M Monochrome COLDMOS Camera Back-illuminated (BSI) CMOS Sensor The QHY290 uses an extremely sensitive BSI CMOS sensor, the Sony IMX290. So, is it possible for an amateur telescope maker to construct a wooden mount suitable for long exposure astrophotography? The answer is definitely yes. Small ecological footprint, achieved by using low waste factor tecnologies, like 3D printing, laser and waterjet cutting. ) When using auto guiding, the mount reacts immediately, so corrections are very fast and completely free of play. Attach the included EQ-3M Telescope Drive's precision mini-motor onto the AstroView EQ Mount to track celestial objects automatically. The scope can be driven using one of several different methods. Marine Navigation Box Telescope, Compass, Spirit Level, Alidade Etc For Sale Online. The TNT motor drive system includes adjustable speeds on both axes, high speed centering and one-touch re-positioning of the altitude tangent arm. The Orion U-Mount is made of very solid aluminum and provides smooth and confident motion in both altitude (up/down) and azimuth (left/right) axes, thanks to the quality of the low friction bearing surfaces. The Celestron CGX-L Telescope Mount is Available at High Point Scientific. The drive system uses water cooled brushless dc torque motors connected to the axes with a mechanical reduction ratio of 1: 16 only (see Fig. "Rapid adjustment in right ascension is effected by means of a separate 1/4 h. This well-proven azimuth drive was the start point for a fully automated imaging observatory. 5 arc seconds in 5 minutes and +/- 3 arc seconds in 1 hour. 2 optical design; Rare-earth glass for images free of false color, coma, and field curvature; 43. The following example shows the theoretical expected performance and limitations of a metal band drive used to drive a telescope. The polar and equatorial disks are driven by 1:24 and 1:32 rollers, respectively, through 1:180 worm gears and servo motors. AstroTrac 360 Single Arm Mount Package. New Celestron CGX 14" EdgeHD Telescope. The telescopes are usually balanced; such that you just need enough torque to get the scope moving. Celestron's CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. The main mechanical concept of the mount is left unchanged; i. Star testing on a GEM with a video sample and specs will be available soon. In fact, wonder of wonders, it weighs only 3. AWR have advised on motorizing all types of telescopes and mounts with mirrors up to 36 inch diameter. The OGEM telescope mount, 100 kg payload friction drive for under 4000 euros. It can acquire and track Low Earth Orbit Satellites; and with a maximum slew speed of 20 degrees. And another note: you may want to rotate the optical tube 180 degrees, so the DSLR is is on the "inside" when the tube is on the east or west of the mount. fric German Equatorial mount and this concept was applied to the MoFoD now. Find mounts that are rigid and sturdy on telescope tripods and piers to prevent any movement of your telescopes. On the first night I messed up polar alignment because I did not purchase the polar scope (I was too cheap and did not want to spend. 44 Nm and 13. The Orion Adventures in Astrophotography Bundle lets you take surprisingly detailed pictures of star fields, the Milky Way, or star-trails with a point-and-shoot or DSLR camera (camera not included). Celestron CPWI Software interface With any one of three connection methods from your PC to the mount, CPWI's telescope control and Sky Viewer display makes selecting your target easy. For example, here is an illustration of. Lie the telescope tube (with an eyepiece and finderscope mounted) on a table. There's zero backlash due to the friction drive. Revolutionary Hubble SiTech/SkySafari GoTo System is $1,995. The Inspire 100AZ is the ultimate telescope for the novice to intermediate astronomer. Now let’s look at the DiscMount. PlaneWave Instruments is proud to introduce its new L-Series direct drive mount system. The scope can be driven using one of several different methods. The motion is smooth and is controlled by a manual friction drive control knob on the side of the fork. the telescope is easier to adjust overall and is more forgiving of slight adjustment errors. uk or Telephone: 01782 614200. If I choose the other way with timing belt I have seen a kit cost about 190 Euro, is this old mount worth it?. Please specify your requested options in your payment for the deposit. The first test we made with a 30-cm f4 telescope on G53F Friction Drive Mount was used, ASI1600MM-Cool and L filter. The telescope, located at the Kitt Peak National Observatory, uses an Elevation-Azimuth mount. This is a great telescope to have as you utilize its dual axis Teflon bearings and its altitude tension clutch. Includes polar alignment scope and high-walled accessory tray. Above left to right: illustrating the removal of Questar Duplex telescope optical tube assembly from its fork mount. Gemini had announced that they had developed a new friction drive mount, the G53F and Daniel and myself ended up buying two units, which turned out to be only the second and third ones in existence. Capable of carrying Celestron’s largest optical tubes with ease, CGX-L is designed for backyard observatories and remote imagers looking for exceptional load capacity to weight ratio, compact design, and innovative features that fully support. Obermair follwing a design by R. In terms of large-scale optical telescope, the design of multi-motor friction drive is obviously advantageous than that of single motor direct drive on the expense for manufacture of motors. Although there are examples of use of even heavier telescopes up to 100kg, the recommended maximum load is about 80kg for this telescope mount when used for imaging. diameter friction drive in DEC • Open structure optical tube assembly affords better "seeing" • Steel mirror cell with multiple 12-bolt patterns per KPNO standard • Tracking accuracy: +/- 0. Vixen Porta II Alt-Az Mount Vixen Porta II Mount. iOptron SkyGuider Pro Camera Mount Full Package #3550. The driven gear train is a speed increasing gear train in which a low fric— t ion is desirable for the prevention of stick—slip. This Celestron PWI (CPWI) Telescope Control Software unleashes the full pointing accuracy of your Celestron computerised German EQ or alt-az telescope. Celestron's newly designed CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. EQ-3M single- and dual-axis computerized drive systems are available separately. This allows the mount to be adjusted to accommodate large changes in eyepiece (or camera) weights. If you're shooting with a 400 mm camera lens or a small telescope, leave the counterweights at home. AWR have advised on motorizing all types of telescopes and mounts with mirrors up to 36 inch diameter. It includes an AC powered synchronous clock drive motor and declination clamp. When the telescope mount is properly polar aligned and the RA drive is attached and running, the user need only make occasional adjustments in declination (Dec) to keep an object in the eyepiece for long periods of time. Just installed the Orion EQ-1 drive Orion 7826 EQ-1M Electronic Telescope Drive on an Orion Mini EQ-Tabletop Orion. In fact, wonder of wonders, it weighs only 3. So, is it possible for an amateur telescope maker to construct a wooden mount suitable for long exposure astrophotography? The answer is definitely yes. The 1000 lb. The patented Tension Control Handle allows users to add or reduce tension, thereby increasing or decreasing the friction between the optical tube and the sideboards. MMT = multiple mirror telescope. introducing Gemini G53f friction drive mount for telescopes, designed for astrophotography. The telescope itself was dusty and wet, but the mount was in a good shape, just the driver electronics for the motor were missing. Solutions range from high-end motion systems with nanometer precision to industrial applications requiring high torque. Custom made telescope mount for Meade 16" ACF SCT, showing slewing, guider pulse testing, and some images from first light. "Choosing Your First Telescope" with J. The Mountain Instruments (MI)-250 Go-To is a rock solid German equatorial mount that features a 7. It has a 220LB payload capacity and yet weights only about 50 lbs. The world-wide shipping cost is $55 via surface and $95. 857 inches in diameter (D) is assumed. It can acquire and track Low Earth Orbit Satellites; and with a maximum slew speed of 20 degrees. (I would have preferred Allen head bolts but they were out of. When the mount is adjusted, only the beam's angle changes, not its length. Telescope Mounts Standard Features : Accurate tracking is difficult without a proper mount. Internal cabling for worry-free remote operation. You can also equip the mount with Celestron’s “Logic Drive” for hands-free, motorized tracking. diameter friction drive in DEC contribute to the stiffness that helps promote smooth tracking and excellent accuracy. As a result, it’s easy to keep the objects that move on the center point of the eyepiece. GARMIN Portable Friction Mount. Using a friction drive at the end of a ~26 cm arm (the. Jan 9, 2020 - Explore jordiblasco's board "Home Obsevatory" on Pinterest. Attach the included EQ-3M Telescope Drive's precision mini-motor onto the AstroView EQ Mount to track celestial objects automatically. Based on our Friction Drive System (without gears) is the perfect solution for amateur or professional astrophotographers working in the field and for small to medium observatory use. What do you think about these results with the friction drive ? My PHD calibration seems very strange : AD rate = 4. This took me a few months to build, the brake rotor idea is from ScopeX in South Af. A previous test of my scope indicated something around 5Nm would be required. Motor assembly. the ¼ Hitch Mounts advertised elsewhere on this site also use a roller friction drive system. • 20" Cassegrain telescope in Kepler observatory Linz (friction wheel drive, largely identical with our own telescope, build 1998-2000) • Mount for 20" Newtonian, built by Michael Mross, Lüneburg Germany (friction wheel drive) • 20" Cassegrain telescope by Erich Kowald, private observatory Posiberg in Styria (friction wheel drive,. The planetary reduction drive is often used to enhance the fine-tuning control of a variable capacitor. Takahashi. July 27, 2018 Title 29 Labor Parts 1911 to 1925 Revised as of July 1, 2018 Containing a codification of documents of general applicability and future effect As of July 1, 2018. frictionless. Stay safe and healthy. The first telescope i built was an eq-fork mount - sorry no pictures of it - it was in 1983! It was undriven, though I had plans to add a sector ra drive. This German Equatorial mount tracks the stars with the highest precision in its category. EQ-3M single- and dual-axis computerized drive systems are available separately. The telescope must be in balance first ! Starting with the RA axis: Lock the DEC clutch and loosen the RA clutch, hold the telescope it can move away fast !. 2 YOKE BASE 31 6. In addition, the drive stiffness and control bandwidth must be sufficient to guarantee the telescope positioning in the presence of wind or other mechanical perturbations. System performance matched to mount and motors selected. Incremental Encoder based friction drive. Due to the greater power of this motor, the friction drive loses control. All you have to do is attach your camera to the Orion EQ-1 Equatorial mount and tripod with the included 1/4"-20 threaded adapter, then align the. Since that time, many more astro-imagers and planetarium controlled setups have emerged as backyard telescope technology has evolved. The new AstroTrac 360’s advanced friction drives and optical encoders deliver even better-unguided tracking performance than the AstroTrac TT320X-AG. fric offers the utmost precision available from a pure friction drive without the need for expensive and vulnerable encoders and electronics. There's zero backlash due to the friction drive. The telescope's friction drive system allows backlash-free control of its altitude-over-azimuth mount. First to use thin etched virgin teflon. It bounces, or reflects, the light off the mirror. Internal cabling for worry-free remote operation. Above left to right: illustrating the removal of Questar Duplex telescope optical tube assembly from its fork mount. We have recently completed a series of measurements of the telescope mount. Because of this enormous pressure, it is normal for a "track" to become apparent on the surface of the drawtube with use. Since that time, many more astro-imagers and planetarium controlled setups have emerged as backyard telescope technology has evolved. Just installed the Orion EQ-1 drive Orion 7826 EQ-1M Electronic Telescope Drive on an Orion Mini EQ-Tabletop Orion. Click here for dimensions and ordering. Design and Construction of the Alt-azimuth Mount (Part 1) Ground board The ground board is a 1000 mm (39. Here is a view of the platform without the telescope sitting on it. 4" (20x29cm) and a pin-camera aiming sight. The telescope has been fully refurbished, re-aluminised, and the old electromechanical drive mechanisms removed and have been replaced with the most modern encoders and computer operations. The telescope must be in balance first ! Starting with the RA axis: Lock the DEC clutch and loosen the RA clutch, hold the telescope it can move away fast !. tilted to access the OTA restraining bolt, 3. Please specify your requested options in your payment for the deposit. The used telescope mount incorporates two PMSMs with 11 pole pairs and a rated torque of 6. It was then mounted on a machined piece of angle iron with adjustments to square the drive-wheel onto the ring. With a timing belt drive you reduce the backlash. " These are not words one hears applied to a goto smooth-tracking EQ mount. With a stiffer construction, better cable managament, brake mechanism for both axises and (de)coupling mechanism for the two servo motors, it is an improvement on it's predecessor. Celestron's newly designed CGX-L Computerized Equatorial Mount is the latest addition to their fully computerized equatorial mount series. Please specify your requested options in your payment for the deposit. A shortened mount profile creates a more compact mount that is easier to carry and assemble but also improves the mounts central gravity boosting load capacity. drives for eliminating the backlash. The Event Horizon Focuser (EV) is a low-profile, friction-drive focuser designed for both the amateur and professional market. Celestron CGX-L 1400 combines Celestron's largest and most advanced optics and mount together in an observatory class telescope system. These characteristics and many others combined with G53F's low weight make the G53F Friction Drive German Equatorial Mount an ideal astrophotography mount in the field or in the observatory. The technology normally used in this class of telescope is well understood in the telescope community and has been successfully implemented in numerous projects. An amateur astronomer in Korea made a harmonic drive telescope using machined aluminum. Perfect for viewing the night sky, you won't believe the depth and clarity you will see. It includes an AC powered synchronous clock drive motor and declination clamp. The highly acclaimed Crayford design (see below) permits tolerances up to 100 times better than conventional rack-and-pinion focusers. Moving weight of this telescope is about 13,000 lbs, and all the drive electronics are mounted on the fork to reduce problems with control cables. The sturdy equatorial telescope mount and adjustable tripod features fine manual adjustment for tracking and focusing on celestial objects. The motion of the platform is reasonably smooth. Small ecological footprint, achieved by using low waste factor tecnologies, like 3D printing, laser and waterjet cutting. The GTD MoFoD MKII Fork Friction Drive Mount is the ideal solution for demanding applications (public, school, society or professional observatories). 800" diameter 7075 aluminum gear with 180 teeth for incredibly accurate tracking. It bounces, or reflects, the light off the mirror. Unfortunately the price of a direct drive telescope mount is far outside the budget of most amateur astronomers (on the order of $15,000 USD or more). Tension can be adjusted in both axes, and because of the solid aluminum build quality, the U-Mount can hold an incredible amount of weight. 25" accessories 9x50 Finder Scope to help accurately. The SpaceProbe 130ST EQ consists of 24 inch long optical tube design which makes it a versatile telescope for the whole family, and children will love the stunning images of the night sky. to connect TDM to the. 405 New Meadow RdBarrington RI 02806 USA Questions? Contact us at:[email protected] This spectacular telescope makeover can turn your mediocre-performing telescope into a performance giant with minimum backlash, firm clamping capability, precision tracking and GO TO drive performance, total de-greasing and backlash adjustment and careful protective wire routing. Offered in Alt-Az or Equatorial configuration. iOptron SkyGuider Pro Camera Mount Full Package #3550. These characteristics and many others combined with G53F's low weight make the G53F Friction Drive German Equatorial Mount an ideal astrophotography mount in the field or in the observatory. 2 meters wide. The GM 8 drive system The drive system uses a 2. Capable of carrying Celestron's largest optical tubes with ease, CGX-L is designed for backyard observatories and remote imagers looking for exceptional load capacity to weight ratio, compact design, and innovative features that fully support large telescopes. The yoke mount solves this by placing the telescope between two forks, but this prevents the telescope from being pointed at stars close. This Celestron PWI (CPWI) Telescope Control Software unleashes the full pointing accuracy of your Celestron computerised German EQ or alt-az telescope. Capable of carrying a 75 pound instrument load, it will. Moving weight of this telescope is about 13,000 lbs, and all the drive electronics are mounted on the fork to reduce problems with control cables. Sometimes I worked intensely on the DIY telescope mount project, and sometimes the project laid untouched for months and months. The best computerized GoTo Telescope is the one that you will use the most. An analysis of friction nonlinearities and a demonstration of the necessity in eliminating static friction are provided. This German Equatorial mount tracks the stars with the highest precision in its category. I think I could test the friction drive performance only with the guiding tube installed on the mount. With a suitable telescope mount in hand, securely fasten the mount to the telescope either by screwing it onto the telescope or bolting the mount in place as required. The primary mirror and cell around which the telescope are from the multi-mirror telescope on Mt. Every time I move the mount I must redo it. diameter friction drive in RA and 42 in. The planetary reduction drive is based on an classic but ingenious design. At the heart of the LighTrack is the precision motor and the friction drive. Orient motor so that threaded hole in motor drive mounting plate aligns with the elongated hole near the top of the recess. First no tools assembly, no tools primary collimation. The telescope has a 4m aperture primary mirror, however due to the off axis nature of the optical layout, the telescope mount has proportions similar to an 8 meter class telescope. Though the telescope itself was complete and even came with its original eyepieces, the mount was missing several important parts. An object of the present invention is to provide a disc based alt-azimuth telescope mount that permits the magnitude of friction to be easily adjusted between discs. A Dobsonian telescope is an altazimuth-mounted Newtonian telescope design popularized by John Dobson in 1965 and credited with vastly increasing the size of telescopes available to amateur astronomers. In fact, wonder of wonders, it weighs only 3. This tracking camera mount looks and acts differently than all of the other star trackers I have previously reviewed, including the wildly popular models from iOptron. The first test we made with a 30-cm f4 telescope on G53F Friction Drive Mount was used, ASI1600MM-Cool and L filter. The Questar mount is unique in that it uses a form of roller friction drive on both axis. friction drive, worm gear, etc. We captured three images with the highest dynamic range, unit gain, and lowest read noise settings. A high performance dual axis drive system for microstepping stepper motors. A motor drive allows tracking of celestial objects. The OGEM telescope mount, 100 kg payload friction drive for under 4000 euros. However, the scope's Dec drive gear is a Mathis drive, with its worm mounted in bronze bushings, which I believe will provide more accurate, concentric operation and. Celestron's newly designed CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. Low friction is achieved by balanced profile displacements for equal lengths of approach path and recess. By the time I added the off axis guider, the filter wheel, focuser, and finally a camera on the scope I lost a lot of sky due to everything hanging off the back. This telescope has an f10 focal length in a folded optical path making. Friction drive and bearing of tube and fork are original Pressberger type. These are coupled by friction to large diameter drive disks on each axis. Please note that these specifications are sub-ject to change without notice and stated for the Losmandy GM 8 mount with the standard accessories. The telescopes are usually balanced; such that you just need enough torque to get the scope moving. This is a great telescope to have as you utilize its dual axis Teflon bearings and its altitude tension clutch. Three Astrophotography Tracking Mounts but systems are also available to mount DSLR cameras and lenses up to 500 mm in focal length. Mesu-Optics sells saddle plates, counter weights, Berlebach tripods, bended knee pillars and polar scopes. Spring-loaded brass worm wheel and stainless steel worm gear reduce friction and provide optimum gear mesh. An object of the present invention is to provide a disc based alt-azimuth telescope mount that permits the magnitude of friction to be easily adjusted between discs. Here it is in the middle of its range of travel and the top is flat. 5 homemade telescope. mount is brushed cast aluminum, aircraft polyurethane painted, with friction drive alt-azimuth controls. The mount is the actual tripod and the wedge is the device that lets you attach the telescope to the mount. uk or Telephone: 01782 614200. OK, it won't be actually the first light, but a brief report from a third night (third use case) when I finally managed to handle the setup (cables etc. Celestron's CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. Stationary latitude knob with a newly-designed linkage system greatly reduces the amount of friction when polar aligning the mount. With its friction control system, the mount can be quickly moved to your target object. The balancing doesn't need to be exact, the friction in the platform prevents it from rotating freely. Mount the tube on the declination shaft and secure the declination shaft in a horizontal position. Integra Field Rotator-Microfocuser. Even at high magnifications, you can move the rockerbox mount around quickly and easily to point at any target in the night sky!. With an optical tube assembly weighing only 28 lbs. A This is a balance problem on the telescope. Based on our Friction Drive System (without gears) is the perfect solution for amateur or professional astrophotographers working in the field and for small to medium observatory use, operated locally or remote. Ultra-Light Conversions. For mounting the telescope mount head to the tripod, I will use the same friction plate casting but with a 5/8-11 thread in the center and 1/4-20 counterbored clearance holes on the 6 bolt pattern. A belt driven motor minimizes backlash but remains smooth even when handling a large telescope. Unfortunately the price of a direct drive telescope mount is far outside the budget of most amateur astronomers (on the order of $15,000 USD or more). This Celestron PWI (CPWI) Telescope Control Software unleashes the full pointing accuracy of your Celestron computerised German EQ or alt-az telescope. I already have a 114/900 celestron on a eq1 mount w/motor drive (just like yours). Mount is also Ed's fork mount improvement inspiration I will add more "boxing" to my unboxed fork seen at edhiker. " These are not words one hears applied to a goto smooth-tracking EQ mount. astro-imaging. Gemini Telescope Design G53F friction drive german equatorial mount This German Equatorial mount tracks the stars with the highest precision in its category. Setting Ideas Into Motion Since 1950, design engineers have depended on SDP/SI for high-quality components, subassemblies, and engineering expertise. The Orion EQ-1 equatorial mount and tripod provides solid support and control for small astronomical telescopes Capable of managing telescopes and equipment combinations weighing up to 7 lbs. Solutions range from high-end motion systems with nanometer precision to industrial applications requiring high torque. the OTA shown clear of the saddle and fork mount. This telescope also uses a 6×30 Straight-View Finderscope, a tension control handle, and a floor-based manual Alt-AZ mount. The friction drive on the declination axis was a mistake. The Advanced Polaris Telescope Mount has slow motion RA and DEC controls for manual control. Stationary latitude knob with a newly-designed linkage system greatly reduces the amount of friction when polar aligning the mount. The first stage is a worm gear with a backlash free spring loaded worm assembly. The L-600 is ideal for the CDK24 and can hold up to 300 lbs. A motorized mount allows you to smoothly move your telescope on different axes. A Friction-drive Fork Mount by Dave Rowe Nothing is more important for successful astrophotography than the telescope's mount. It features the largest aperture in the Inspire family line, and its short tube offers a wider field of view perfectly suited for larger, fainter deep sky objects. The pillow blocks hold skate board bearings. Fornax Mounts LighTrack II Review The Fornax Mounts LighTrack II was designed for accurate tracking of the night sky, for long exposure astrophotography projects. In addition, the drive stiffness and control bandwidth must be sufficient to guarantee the telescope positioning in the presence of wind or other mechanical perturbations. Not directly but to drive a generator that would supply electrical power to the mount (sorry about that but I need to make sure that all pages on this site have some astronomical reference ;} Perhaps a "SteamPunk" telescope application???. 5 arcseconds) Unguided exposures possible for up to 300 second exposures. Direct drive telescope mounts are not a new idea, and are commonly found on professional observatory telescopes and very expensive high-end telescope mounts. The best model of this buying guide is the Celestron NexStar 1100 HD Deluxe. The GM 4000 HPS is one of the most viable mounts produced in series. An amateur astronomer in Korea made a harmonic drive telescope using machined aluminum. Here is a picture of the original as it was delivered. At one point, I thought about using something like this to drive my telescope mount. The first telescope i built was an eq-fork mount - sorry no pictures of it - it was in 1983! It was undriven, though I had plans to add a sector ra drive. The mount has two parts, the rocker box and the ground board. Since the base is quite spherical, some motor driven friction discs could drive it like an old style computer mouse in reverse. MOTODEC is a battery operated hand control with an electric declination motor providing vibration-free, direct-drive declination adjustments necessary for visual and photographic use. A telescope is rotated along the azimuth axis (horizon) to the horizontal positioning of a distant object and then tilted along the altitude axis of the vertical position of the object to point the instrument at it. (However, two of mine don’t!) The camera will then track the stars and so ‘star trailing’ will not be present in the resulting images. Before you attach the optical tube, make sure that the declination and right ascension clutch knobs are tight. To drive the mount we choose friction drives for their very low PE and rock solid operation. Celestron’s workhorse CGEM mount lineup has been the German Equatorial backbone for telescopes ranging from 6 to 11 inches of aperture. Truss Telescopes. (Sometimes I think it also does duty as some kind of Star Wars laser weapon. Astro-Physics mounts or Paramount (range starting. The generic failure mechanism has been discussed ad nauseam on the pages of MAPUG (2) and many other internet-based telescope user groups, and stems from the use of tiny plastic components and encoders in the gearbox, whizzing around at up to 14,000 RPM, to slew heavy telescopes on a mount originally intended for 20cm aperture tubes. 4 out of 5 stars, based on 5 reviews 5 ratings Current Price $28. TELESCOPE MOUNT: • 30 in. Stator (right) and rotor engine (left), the two are intertwined rings and mounted directly on the RA or DEC axis, the engine is 210 mm in diameter and provides high torque. The GM 4000 HPS is one of the most viable mounts produced in series. The Dobsonian mount usually relies on the friction between the side bearings on the optical tube of the telescope and a frictional material on the saddle to hold the optical tube in place. TCF-S Focuser System Components. The Polar Disk Mount is finally ready for my 6" f/7. First to use Baltic Birch/ApplePly plywood construction. Equatorial mounts tend to be massive (less portable), expensive, complicated, and have the characteristics of putting the eyepiece of Newtonian telescopes in very hard to access positions. New Listing iOptron SkyTracker Pro Camera Mount with Polar Scope - (Mount Only) - #3322. DFM Engineering, Inc. The Omegon Dobsonian telescope gives you clear views of planets, nebulae and galaxies. I picked up an old DS2000 mount for next to nothing. Typical features include:. Shall I install a belt drive too? Maybe, but first I will have a look how it's constructed, maybe there is something I can rework and have it better as it is. Need to learn to not call things so tight. Noisy overnight, especially with the use of stepper motors that can resonate with the telescope mount. The fine friction strip makes the movement of the mount very balanced. As a result, the drive gears are holding the scope back to the east rather than pushing it forward to the west. Gemini Telescope Design, Latina, Italy. Setting Ideas Into Motion Since 1950, design engineers have depended on SDP/SI for high-quality components, subassemblies, and engineering expertise. Up to 2" OD, 2" length, name the custom bore. The best computerized GoTo Telescope is the one that you will use the most. DEC rate = 3. This single-axis motor drive will make observing easier and more fun, since you won't have to hassle with periodically centering an object in your telescope eyepiece's field-of-view. • Locked rotor frequency 1. We must realise that in astrophotography is usually lumped into the coordinate correction category. Astrosib telescopes are renowned for their excellent optics. MMT = multiple mirror telescope. Here is a picture of the original as it was delivered. Build yourself a working Equatorial Mount for under $50. Telescope Mount and Optical Tube Assembly. First to use anti-friction stippled laminates on bearings (Tweed formica). 2 meters wide. This describes where version is to provide a cheap, the telescope is slung between stable platform for larger the lines of the fork of the mount. DFM Engineering, Inc. Often small, inexpensive scopes are woefully undermounted, leading to shaky views at high power and difficulty tracking objects. HEIDENHAIN offers the largest direct drive motor range on the market via ETEL. The generic failure mechanism has been discussed ad nauseam on the pages of MAPUG (2) and many other internet-based telescope user groups, and stems from the use of tiny plastic components and encoders in the gearbox, whizzing around at up to 14,000 RPM, to slew heavy telescopes on a mount originally intended for 20cm aperture tubes. The following example shows the theoretical expected performance and limitations of a metal band drive used to drive a telescope. Stationary latitude knob with a newly-designed linkage system greatly reduces the amount of friction when polar aligning the mount. Two other hand screws control the friction. The telescope mount configurations have what is called an "Instrumental Pole". Spring-loaded brass worm wheel and stainless steel worm gear reduce friction and provide optimum gear mesh. The telescope has been fully refurbished, re-aluminised, and the old electromechanical drive mechanisms removed and have been replaced with the most modern encoders and computer operations. 1898, at 149 Fifty Sixth St. The altitude bearing. Here is a view of the platform without the telescope sitting on it. From the Factory the friction drive is adjusted fairly tight meaning the mount can only be turned by the internal motors. From Figure 1, one can see that the instrumental pole for friction drive consisting of a large diameter disk and a small diameter drive roller provides the stiffest form of gearing. If you needed 15 W at 10 m/s, then you'll need 1. Lie the telescope tube (with an eyepiece and finderscope mounted) on a table. The gear is fit onto a slip clutch with a knurled friction adjustment ring. Up to 2" OD, 2" length, name the custom bore. Also problems can occur when using a poncet mount: when the azimuth bearings have to much friction, it will be possible that the drive sector slides over the driveroller when moving the telescope in azimuth. Often small, inexpensive scopes are woefully undermounted, leading to shaky views at high power and difficulty tracking objects. Gimbal Mirror Mounts A gimbal mount has axes of rotation which intersect at the center front surface of the optic. This tracking camera mount looks and acts differently than all of the other star trackers I have previously reviewed, including the wildly popular models from iOptron. Description JMI Standard Event Horizon Telescope Focuser – Cassegrain. Celestron CGX-L Equatorial Mounted 1100 Schmidt-Cassegrain Telescope 11" Schmidt-Cassegrain Optical Tube Assembly Aluminum Optical Tube Celestron's premium StarBright XLT coatings 2800 mm focal length (f/10) 40mm eyepiece included (70x) Visual back allows use with 1. Fully programmable to match telescope characteristics for retro-fitting. Here it is in the middle of its range of travel and the top is flat. Friction drive and bearing of tube and fork are original Pressberger type. The entire drive mechanism is otherwise my design. Exceptional load capacity to weight ratio Additional Aux accessory ports and autoguider port on the Dec axis for better cable management Larger. motor, which runs in either direction as desired. This system is renowned for high precision and reliability. In this paper, the principle and characteristics of friction drive is analyzed. The altitude and azimuth axes are supported and located by hydrostatic bearings. You just let go and the drive takes over. The L-600 is ideal for the CDK24 and can hold up to 300 lbs. The present invention is directed to a disc based alt-azimuth telescope mount for use with any of a variety of existing telescopes. When the telescope mount is properly polar aligned and the RA drive is attached and running, the user need only make occasional adjustments in declination (Dec) to keep an object in the eyepiece for long periods of time. Since the base is quite spherical, some motor driven friction discs could drive it like an old style computer mouse in reverse. Ready to see the moon and more? Become an expert in astronomy today. For my application, I already have a 100:1 harmonic drive, and I'm looking to add a 10:1 friction drive stage, for a mount capable of carrying a telescope around 30kg. 2 YOKE BASE 31 6. High torque motors with better slewing and tracking ability. Friction drive and super tracking accuracy. First to use anti-friction stippled laminates on bearings (Tweed formica). Its main profile is the design and manufacturing of telescope mounts and drivers. Ending Feb 23 at 12:36PM PST. 45 arcsec/step (micro stepping) Both telescope axes must include a friction clutch for manual positioning; Isolate the drive mechanics from the GEM with a Sorbothane vibration dampening material. The world-wide shipping cost is $55 via surface and $95. All mounts are designed and manufactured by. Celestron's newly designed CGX-L Computerized Equatorial mount is the largest and most capable of their computerized equatorial mount series. Astronomical telescopes may use a large mirror instead to perform the function performed by the objective lens. So we decided to rebuild the two friction wheels (RA and DEC axes) completely and scrap the old ones. DIY Stepper Controller using Arduino. It’s possible to configure mount set-ups for visual observations, for long exposure astrophotography, several telescopes in parallel or ultra compact travel set-up. In a ideal system with no friction, the torque to maintain 10 m/s and 1000 m/s is the same, but the power required to produce that torque at the higher speed is 100 times more. of 2012 by a team from OMI, and McDonald Austin/West Texas including the OS and PP staff, and Gordon Wesley from Austin. telescopes and to have very Where the telescope pivots is the smooth motion in both axes. The Dobsonian mount usually relies on the friction between the side bearings on the optical tube of the telescope and a frictional material on the saddle to hold the optical tube in place. Can lift it with one hand. Need to learn to not call things so tight. Mirror cells, upper cage assemblies etc. The telescopes are usually balanced; such that you just need enough torque to get the scope moving. Celestron's newly designed CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. and SCIENTIFIC AMERICAN 187 TINSLEY LABORATORIES Supplies for the Amateur Telescope Maker. Mount includes: Rocker box, all PTFE bearing surfaces, polymer non scratch screw on feet, declination CNC machined bearing rings. A reflector telescope (like Orion StarBlast II 4. If there is too much friction, the telescope is difficult to move to center an object in the field of view. HEIDENHAIN offers the largest direct drive motor range on the market via ETEL. The Questar mount is unique in that it uses a form of roller friction drive on both axis. The motions are reasonably smooth, the mount’s extruded aluminum legs are quite steady with such a lightweight tube. Mobile Tracking Mount for Astrophotography At the heart of the LighTrack is the precision motor and the friction drive. The design of this unique product is based on the following important concepts. First no tools assembly, no tools primary collimation. Dry friction is constant in magnitude, but depends on the sign of the velocity and is always directed opposite to the motion. My first logbook entry mentioning the reconstruction of the Drive was back in 2003, over six years ago. Stay safe and healthy. has some flex along RA. This stems from trying to set up my 10" Meade LX200 for astrophotography. Friction drive mounts - posted in Mounts: Just a topic to elaborate on the pros & cons of friction drive mounts (e. TELESCOPE MOUNT WORM GEAR BACKLASH ADJUSTMENTS This document is intended to assist in the adjustment of the worm backlash (“play”) of Vixen GP style mounts (SP, SP-DX, GP, GP-DX, GP-E, GP-D, etc. When I get around to it, I will replace it with a gear drive. The yoke mount solves this by placing the telescope between two forks, but this prevents the telescope from being pointed at stars close. The PETG mount is flexible enough that I can just slide the motor shaft into the knob without separating the motor from the mount. the telescope is easier to adjust overall and is more forgiving of slight adjustment errors. Orient motor so that threaded hole in motor drive mounting plate aligns with the elongated hole near the top of the recess. CGX 1100 HD combines Celestron's all-new state of the art CGX computerized equatorial mount with its acclaimed EdgeHD optical system. Because of this enormous pressure, it is normal for a "track" to become apparent on the surface of the drawtube with use. This system is renowned for high precision and reliability. Here is a picture of the original as it was delivered. Power input and accessory ports remain stationary while the mount slews to avoid. The mounts drive system uses Gemini Telescopes well proven friction drive system which results in very low PE, zero backlash and dependable operation. (full step) and track at 0. Since 1988, our clients experience an unmatched customer service. I mount the cow magnet in a holder which holds the magnet 90 degrees to the boom about 12" down the boom from the damping magnet. Guide to Telescope Mounts. With an imaging instrument capacity of 10 kg (22 lb) it easily handles a 100 mm (4 inch) refractor or 200 mm (8 inch) carbon Ritchey Chretien with camera. Altazimuth mount: An equatorial telescope mount with clock drive was left out of the design. First no tools assembly, no tools primary collimation. It's styled like a traditional Leica M rangefinder and brings a host of updates to the hugely popular original Leica Q (Typ 116) that was launched in 2015. Description. The mathematical model of the LAMOST telescope mount drive control system is established and the fuzzy sliding mode control theory is put forward to contrast with traditional PID control and ordinary sliding mode control, which is realized by Matlab/simulink simulation. Key Features. Our goal with AstroTrac 360 was to do the impossible: engineer a full‑size experience into the smallest, lightest telescope mount possible. It is the most lightweight and portable of the three size models. The telescope mount is an equatorial fork with a friction drive system, and it allows fully programmable tracking speeds with a typical range of 15'' s-1 and an accuracy of ±5''hr-1. new and innovative friction bearings with adjustable resistance for altitude adjustment. Marine Navigation Box Telescope, Compass, Spirit Level, Alidade Etc For Sale Online. Currently, friction drive with ultra-low speed and high accuracy is widely used in large astronomical telescopes. prised more mount manufacturers don't deploy friction drives, but there is a lot of inertia in tradition, and tradition weighs heavily in favor of worm drives. The Advanced Polaris Telescope Mount has slow motion RA and DEC controls for manual control. Part number 91530 This all new design with 55lb payload will handle any medium size imaging rig. The control system is built aroun. So we decided to rebuild the two friction wheels (RA and DEC axes) completely and scrap the old ones. )This is accomplished by a small diameter grooved. The altitude bearing. Approach with extreme caution, and audition carefully before buying. Heavy Duty belt-drive system minimizes backlash while providing smooth motor operation under heavy loads. The DiscMount was designed with Patented Variable Friction Control along with a large friction disc. Friction will be reduced to about one-third of the original friction. 857 inches in diameter (D) is assumed. A drive is the electronic device that harnesses and controls the electrical. 7 Summilux lens. Evidently the friction drive was sufficient, and reliable. July 27, 2018 Title 29 Labor Parts 1911 to 1925 Revised as of July 1, 2018 Containing a codification of documents of general applicability and future effect As of July 1, 2018. The telescopes are usually balanced; such that you just need enough torque to get the scope moving. 3 TABLE 32 6. We must realise that in astrophotography is usually lumped into the coordinate correction category. The telescope has a 4m aperture primary mirror, however due to the off axis nature of the optical layout, the telescope mount has proportions similar to an 8 meter class telescope. Detailed photos of the controller, the mount, as well as astrophotographs taken with it are in the link. The invention provides, therefore, a simple and inexpensive drive assembly for the telescope mount, in which the worm gear forms its own ball bearing and its own friction clutch. All-new ergonomic adjustment knobs with reduced friction for smooth and easy positioning under full loads. 48 inch pinion driving 35. CGX-L EQUATORIAL MOUNT AND TRIPOD-Available on Pre-Order NEW CGX-L FEATURES Increased 75 lb load capacity. Once the EHT has measured data from the black hole, we still need to make a picture from it - a process referred to as imaging. The mathematical model of the LAMOST telescope mount drive control system is established and the fuzzy sliding mode control theory is put forward to contrast with traditional PID control and ordinary sliding mode control, which is realized by Matlab/simulink simulation. EdgeHD virtually eliminates both field curvature and off-axis star coma with many. I think I could test the friction drive performance only with the guiding tube installed on the mount. The Elevation drive ratio is about 30: 1, while the Azimuth drive ratio is about 35:1. fric Precision Friction Drive German Equatorial Mount E. A 10” telescope offers an upgrade from an 8” of nearly 50% extra light gathering power, meaning brighter images, better resolution and greater colour saturation. MOTODEC is a battery operated hand control with an electric declination motor providing vibration-free, direct-drive declination adjustments necessary for visual and photographic use. EQ-3M single- and dual-axis computerized drive systems are available separately. It delivers a nice flat field over a large area. PlaneWave Instruments is proud to introduce its new L-Series direct drive mount system. Head weight is 21kgs, load capacity roughly double of that, it is an interesting alternative for. Meyer and E. *2nd* Orion AstroView Equatorial Telescope Mount. fric Friction Drive Mount. CGX 1100 HD combines Celestron's all-new state of the art CGX computerized equatorial mount with its acclaimed EdgeHD optical system. This is destined for my telescope mount. The coil is also on the floor in a holder set parallel, 2-inches to the left, of the 40" long, 3/4 x 3/4 square, solid aluminum boom and the cow magnet. Gemini had announced that they had developed a new friction drive mount, the G53F and Daniel and myself ended up buying two units, which turned out to be only the second and third ones in existence. We are serving amateur and professional astronomers worldwide.
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