direct drive telescope mount

Indeed as James said. The pixel scale is about 0.53 "per pixel, this level allows to see any flaws. Instead, there are encoder reference points inside the mount, and precise pointing and tracking is obtained as the system compares the position of the telescope to these reference points. A method is presented to drive the motor directly . Here is the first plot showing 3 measurement per second during 10 minutes: The Y scale is expressed in arcsec, and does not show during 10 minutes. The PlaneWave L-350 Direct Drive Mount is a single fork arm mount ideal for using PlaneWave's telescopes. These observatory grade mounts are better in every way than the others on this list other than price - substantially higher than most other amateur options - and portability - it's not one for moving around. is no longer necessary. This curve look less noisy due to the laying of 2s per point: the effect of tilt tip star turbulence is smoothed. Found inside – Page 42FAR telescope designed by Max Bray with a tertiary mirror to direct the beam out through the South polar axle to a ... celestial coordinates to the unique el - el mount coordinates and commands stepping motors to drive the telescope at ... Threads are impressed into the rim of the drive circle either by JB-Weld, wood putty, or fiberglass. Traditionally, astronomical telescopes have been driven by worm gears. It turns a 16-tooth pulley and drives an 85-tooth 3D printed pulley. Read more; Berlebach PLANET Tripod Includes Tray & Spread Stopper. It does work, of course, but it requires some practice and smooth operation of the telescope mount. Both axes must move at variable rates to in order to compensate for the Earth's motion and keep the . Found inside – Page 4123-24 DIRECT - FIRE TELESCOPES SECTION VI DISASSEMBLY AND ASSEMBLY Paragraph General 23 Disassembly of telescope mounts . 24 Disassembly of elbow telescopes . 25 Assembly26 23. General . — a . To preserve the parts of the instrument ... Found inside – Page 3TM 9-1220-220-34 Direct Support and General Support Maintenance Manual for Drive , Ballistics : M10 ... TM 9-1240-285-34P Direct Support and General Support Maintenance Repair Parts and Special Tools List for Telescope Mount : M114 ... There are no RA oscillations due to the direct drive engine system. As the RA axis has encoder whose resolution is about 0.02 arcsec per steps (nearly 63 million steps per revolution), and it is a closed loop system, it is quite possible to perform indoor tests without stars. onsumption may increase to more than 100W in this mode. Power consumption may increase to more than 100W in this mode. By collaborating with Dipl. The night of March 4th, 2010 was less turbulent. This gives me stupidly high resolution of 31,457,280 steps per rev. Ideal for use in small batches and where some shear action is required. Altitude-azimuth mounts have two axes, a vertical and horizontal, that the telescope can rotate on. But it is still a drift and slow, which is not polluted by any periodic oscillation error. ASA DDM500 direct drive mount carry 8 ASA H400 telescopes, what a amazing array! Found inside – Page 27Introducing the most accurate direct drive optical mount available today AEROTUDI UNIDEX 21 2 OMNIUM Superior speed and motion ... laser beam steering ; target acquisition ; and Velocity to 60 sec is standard . telescope alignment . Zero backlash. Zero backlash. A direct drive system is simply a high torque, low cogging brushles. L-600 Mount Features: Load capacity of 300 lbs (135 kg) Direct-drive motors on each axis for smooth, fast, and virtually silent movement of the telescope. The DDM100 ASA´s smallest telescope mount. I realize it is difficult to verify these points and may be limiting the system .... A late night with a seeing between 2 "and 3" arsec seeing was measured. Telescope Mounts. On February 4th, 2010 first tests on the sky have been carried out. Certainly a peak at 1.06 arcsec can be seen, but next RA measurement do not show it anymore. In this paper, one segmented permanent-magnet synchronous motor (PMSM), 4m diameter, is suggested for the mount driving. We manufacture telescopes and accessories such as telescope wheels, carrying cases, guiding computers, focusers, motors and motor controls and much more. Found insideLink Lock wire Lower housing Mechanical puller Middle yoke M17 quadrant M171 mount Brake assembly , manual Bar , weapons ... chain Yoke assembly Quadrant , fire control , M17 Mount , telescope and quadrant , M171 Mount , telescope and ... This mount can track in Alt-Az and Equatorial modes. They are due to turbulence and not due to spurious motion due to the DirectDrive system. Even the finest astronomical mounts, relying on mechanics lone, cannot solve all the problems experienced during a common astronomical imaging session. Mount is a direct drive mount with extreme precision. * 1 power supply cord. $399.99. The polar alignment has been carefully achieved using King method (pole distance of less than one arc-minute), the cables path have been optimized to avoid to pull the camera. The results are rather good: the images are sharp, and the elongation of the stars below 20%. Used in combination with a custom made equatorial pier, rendering meridian flips unnecessary. The tracking accuracy is excellent and therefore in most cases one can turn off guiding. For this time, axis brakes were not installed, but this is expected. Together with propritry plate solving based software and internal monitoring of position 100x / second. This is impressively demonstrated in PEM-PRO-record below. A good telescope mount is the bedrock upon which any decent observing or astrophotography setup is built. Enhance your Apollo 600/800 experience. Noisy overnight, especially with the use of stepper motors that can resonate with the telescope mount. Xerxes Scientific is a new company that was created to offer semi-custom telescope mounts and control systems for astronomical imaging. Ready for the most demanding situations in pointing and tracking performance Load capacity of 100kg/220lbs on a polar wedge. Found inside – Page 56The dome - enclosed telescope has an azimuth - elevation mount with direct drive of the telescope axes ; it has been used at wavelengths as short as 1 mm . ( Photos : N.R.A.O. ) a " pumping " source . While the pump may be spread over a ... Based on our long standing experience in all areas of research, that can be carried out with optical telescope systems, we guide and assist the customer through the whole inquiry process, to find the best solution for the given project. The slow motion (10x or 100x sidereal rate) are very soft. Here is a windowing on the center of the camera, which clearly shows the Airy disk of Arcturus (1/2000s Exposure). Direct Drive Telescope Mount prototype The drive has the ability to utilize the system's extremely high resolution (27 Bit) EnDat Absolute encoder for ultra-fine positioning. Download the Celestron PWI Telescope Control Software. After all why should we too reinvent the wheel? Found inside – Page 11-42CANNON TUBE M68 AND COMBINATION GUN MOUNT M140 REMOVAL PROCEDURE TOOLS : Pry bar Movable hoist ( 4 ton capacity ... to remove M114 telescope mount TM 9-1220-220-34 for procedure to remove M10A5 ballistic drive TM 9-2350-215-20-2-3 for ... This permits any required corrections to be applied immediately. 1819 Kona Dr., Rancho Domingues, CA 90220. The L-series direct drive motors can move the telescope at speeds from 2 degrees and up to 50 degrees per second. Over 1 ton in motion! Sealed high precision turntable bearing in azimuth with direct drive brushless Torque Motor. This technology is employed in modern professional telescopes. Because of this excellent tracking, purchasing a direct drive dount can begin to immediately pay for itself over more traditional mounts. The mount can also be fixed to an equatorial pier (optional delivery) rendering meridian flips obsolete. Harmonic drive mounts use a gear system, albeit with higher quality gears that allow for carrying payloads many times heavier than the mount itself, making them highly . . This allow to get very stiff and very responsive axis to the wind. This increases the efficiency and creates a quiet and highly dynamic operation as . * power supply. This curve look less noisy due to the laying of 2s per point: the effect of tilt tip star turbulence is smoothed. unread, Jun 3, 2021, 4:48:44 PM Jun 3 . Offered in Alt-Az or Equatorial configuration. Direct drive telescope control cancels out all these drawbacks because it is using bushless motors directly mounted into the RA/DEC axis without any additional parts, it is coupled to very accurate encoders (0.015 arcsec per encoder step). Certainly a peak at 1.06 arcsec can be seen, but next RA measurement do not show it anymore. Offered in Alt-Az or Equatorial configuration. The first RA measurement shows that the standard deviation of the motion is 0.79 arcsec. Direct drive telescope control cancels out all these drawbacks because it is using bushless motors directly mounted into the RA/DEC axis without any additional parts, it is coupled to very accurate encoders (0.015 arcsec per encoder step). Here we'll explore everything you need to know about mounts, what they are, what they do and why you should think carefully about which type of mount you choose when buying your first telescope.. A telescope mount does two things: one, it holds your telescope securely; and two, it allows . This may be a disadvantage if you want to observe Jupiter at say 400x. L-500 is designed for the CDK17 and CDK20 and can hold payload of over . Like its smaller brother, the DDM85 can be be run on a 12V power supply and powered by a single car battery. RCOS designed Controller matched to the performance requirements. Slew speeds up to 50 degrees per second. Both axis are driven by a closed loop servo system running at 10 Khz. These clamp mount mixers are short on price and long on function. The EQ-M motor drives allow precise tracking with your EQ-1, EQ-2 and Astroview mount. High resolution encoders on each axis for precise positioning. The interest of measuring the DEC axis motion (Y), at the same time as RA motion, is to show that the oscillations due to turbulence are identical, and that the Direct-Drive system does not produce any spurious oscillations on RA axis. A Direct Drive Motor, is a type of permanent-magnet synchronous motor which directly drives the load. Found inside – Page 10each axis of the mount every 0.01 sec and alters the torques supplied by direct - drive motors when necessary . The telescope's relative pointings are maintained to within 2 ' of the position requested ( see Ch . II , B for the absolute ... Found inside – Page 3TM 9-1240-273-34 Field Maintenance Manual , Telescope Mount M145 TM 9-1240-274-34 Direct and General Support ... M109A2 / A3 TM 9-2350-311-20-1 Organizational Maintenance Manual for Hull , Powerplant , Drive Controls , Tracks ... The DDM85 series is available in three different models: BASIC: Carrying capacity 45kg (100 lbs). Found inside – Page 31amazing dynamic performance of this lightweight telescope and powerful direct drive , we drove the entire telescope ... 6.0 LIGHT WEIGHT AND MODULARITY ADVANTAGES OF LIGHT WEIGHT As mentioned earlier , a lightweight mount reduces costs ... Found inside – Page 951These systems include : rolling element bearings for the telescope mount and rotator axes , direct drive altitude axis motors , gear driven azimuth & cassegrain rotator axes , optical tape encoders , mount control system , and thermal ... The worst is the image 2 which presents an elongation of 27% of stars on the delta axis. Directdrive mounts are used in recent professional telescopes mounts and is the state of the art of telescope mount, and ALCOR-SYSTEM is proud to introduce the NOVA 120 mount. New design based on 15 years of experience with Direct Drive systems. These mounts are installed all over the world. The speed changes exhibits no play at all, starts and stops are very clean and accurate (which is not the case with gears and worms). I could find the coordinates of the field automatically by scanning this region of the sky using Prism software powerfully features. , it was too risky to change the two axis at once. Telescope slewing and pointing is inaccurate because this is an open loop system, tracking speed control is poor because is open loop kind. Found inside – Page 62... DIFFERENTIAL GEAR ASSEMBLY COUNTER , ROTATING , MECHANICAL , DIRECT DRIVE - 3200 MIL RESET PLUG , MACHINE THREAD PIN , SHOULDER , HEADLESS MASK ......... PLATE , TELESCOPE SCREW , MACHINE PLATE , LIGHT SUPPORT INDEX ADAPTER . Dobsonians are alt-azimuthal telescopes, as everybody knows. Characteristic features. The night of March 4th, 2010 was less turbulent. New design based on 15 years of experience with Direct Drive systems. The running accuracy without autoguider correction over an hour shows peak to peak 0.68 arc seconds or 0.18 arc seconds RMS. Found inside – Page 2-84Azimuth Drive and Brake Assembly ( Vehicles Serial Numbers A1009 thru A1999 and Vehicles Serial Numbers A3375 thru ... ( 0 ) Remove telescope mount . ... Route two ground leads from discon . nected bracket down and away from gun mount . This page covers version 0.1.9, the one distributed with Stellarium 0 . Ready for the most demanding situations in pointing and tracking performance Load capacity of 100kg/220lbs on a polar wedge. Mount prototype, the engine is a direct drive engine type, located at the bottom left, at the end of the shaft. This could be possible to add encoders in both RA and DEC axis, leading to better performance, but this is rather expensive. Dependent on the diameter of the encoder a tracking accuracy of 0.2 - 0.4 arcseconds is provided without guiding. The Torque motors (direct drives without gears and no backlash) we are using could operate in a range of one-hundredth of arcseconds. Actually the normal tracking operations disrupted by a momentary gust of wind will be quickly and easily compensated with this technology. Adjustable positioning, light weight and easy removability makes the clamp mount mixer a popular choice for applications that need a high . Test results including the drive addition to the application showed positive returns in helping the system avoid resonance points (natural frequencies) in the testbed . The L-350 is a great option for any astronomer looking to get the absolute most out of a 14-inch aperture or smaller telescope. This is useful given that good weather is pretty rare in my home place. Spectrum shows only noise, this means that no preferred frequency oscillation is occurring. Found inside – Page 225... RW → BW → BR → WR → WB Table 5.1 Breakdown of the six Hall Sensor combinations which correspond to the six phases of commutation Fig. 5.49 Circuit schematic of brushless motor drive system and. 225 A Direct Drive Telescope Mount. iOptron CEM25EC GoTo EQ Mount (1.75" Tripod, Hard Case) SKU: 7103EC-HC - DISCONTINUED. ASA's DDM85 mount has already received its laurels from acclaimed astrophotographers world wide. Astronomical telescopes, satellite trackers, siderostats, heliostats, and gimbals (generically referred to here as telescopes) all require that they are driven in rotation about their axes. From small to big - the right mount for… Thus we have to look with one eye at the development status of the professional Observatories where mechanical limits are also shared by the best commercially available mounts. Here we significantly extend results from (Kozłowski et al. Read more; ASA Astro Systeme Austria Direct Drive DDM 500 Ultra High Accuracy Dri. DDS Technology for AZ ROBOTIC MOUNTS. The L-Series comes in three models; the L-350 capable of holding 100 lbs; the L-500 designed for the CDK17/20 that can hold payload of over 200 lbs. the length of the telescope etc. Therefore, the amount of moving parts in the system is reduced tremendously. Planewave L-500 Direct Drive Mount; FLI Proline 16803 CCD; Filters: LRGB, Ha OIII SII plus photometric R, EXO and NearIR; Basic Image Request Rates: From $30.00 - $45.00 USD per image request ** Please note the rain season for this location is from January thru the beginning of April. There are no RA oscillations due to the direct drive engine system. One of our last project is a new generation of professional robotic mounts, in altazimuthal fork configuration with integrated derotator/focuser, in wich we applied our last Direct Drive System technlology.. 10Micron AZ ROBOTIC MOUNTS AZ8000 and AZ5000, with DDS Technology Read our guide! The star was located at the celestial equator and the wind was around 10km/h. The curve is noisy because of the tip tilt motion of the star due to the turbulence, the exposure time is 1/400s. The tracking monitoring was measured with DMK41AU camera (4.65μm pixel) using the same Ø180mm INTES equipped this time with a 3x barlow, providing a 5400 mm focal length. ASA Direct Drive technology with absolute encoders for high end applications. Nevertheless, tests shall be performed on sky to validate system performance. Found inside – Page 70Technology development, being what it is today, has made alternative drive systems available to advanced amateur astronomers. Direct drive mounts are available from several manufacturers, most notably Astro Systeme Austria ASA ... Control Your Telescope Using Stellarium & Arduino: I am fascinated by astronomy since the first time I looked to the night sky. Planewave L-350 Hybrid EQ/ Alt-Azimuth Mount Features: Weight Capacity: 100lbs. Found inside – Page 66The simplest test is 4,500 direct drive, encoders to firmly grip and man-handle the tripod's mounting 6,500 belt, worm and encoder ... alone are not sufficient to select a telescope Most mounts are designed with damp outdoor use mount. Their initial products are D11 and D21 direct drive modules which are part of their modular telescope mount system, which can either be incorporated into custom telescope mounts or be provided with mounting hardware in kit form for ready assembly and . Another 500 mm Telescope located in Chile that uses ALCOR SYSTEM Direct-Drive technology and Software. Altitude-azimuth or altazimuth mounts are usually preferred for larger telescopes because they are easier and cheaper to build for a massive telescope than an equatorial mount would be. It is a feature which we have studied the issues and does not shows any issues to integrate. PlaneWave CDK350 Telescope System Starting at $22,000 The CDK350 Telescope System combines the CDK14 (0.36 m) f/7.2 Dall-Kirkham Astrograph telescope with the L-350 direct drive mount. Read more; AVALON M-ZERO EQ/AZ COMBO BELT DRIVE MOUNT - BLUETOOTH VERSION . Mount specifications. The new ASA Direct Drive Mount Line. It has 7.4µm pixel size and lead to a 0.89 "plate scale with 1700 mm focal length. It's a nice mount (cheap, portable and very easy to use), but to get what you want to see… PlaneWave Instruments introduces the L-500 Direct Drive Mount ($18,000). The scale is 0.18 "per pixel: this is a high magnification. Page 1 of 2 - Classic worm-wheel gear or Direct Drive MOUNT? Found inside – Page 301The telescope is a fast astrograph with a large Field of View of 2.5×2.5 square-degrees and a plate scale of 2.2 asec/pixel. The tube is mounted on a fast direct-drive mount moving with speed up to 20 degrees per second. Found inside – Page 4-14The three - point mount is adjusted to direct the energy at right angles to the primary optical axis to a second pick - off ... The roll ring drive , also mounted on the inner gimbal , drives a sector gear mounted on the telescope . This is probably the combined effects of bad polar alignment and a not perfect sidereal speed (estimated to 0.013%). Read the Paramount Apollo Specifications (PDF) document for details about this very capable altazimuth direct drive mount. The worst is the image 2 which presents an elongation of 27% of stars on the delta axis. Light-weighted Primary-Mirror for faster cooling and an overall lighter weight telescope compared to comparable scopes. The hand controller allows for faster speed override when centering objects. The same sequence, DEC axis, shows that this standard deviation is 0.79 "too, so the oscillations of the star have no preferred direction. (see here measurements from many worm and gear equipped mounts). RC700 Ritchey Chretien f/12. Take control of your telescope! The DDM85 is ASA's workhorse for professional Astrophotographers and is still suitable for portable use. Found inside – Page 101In figure 2.12, the bob of the conical pendulum is labeled F, while the drive-weight is marked with an x. ... The telescope mount was driven hydraulically, with a cistern on the observatory roof providing a constant 101 MAKING TIME. Mars observatory is located in south of France, and is operating below a 5m dome, a 600mm F8 telescope from Officina stellare and a NOVA 200 Direct drive mount has been installed. In all cases, the periodic errors of worm and gear, Maximum pointing speed and axis stiffness, It has been tested a high speed of 20°/sec, the next video, we started with a 4°/sec speed and going up to a speed of 20°/sec. Minimal observatory footprint; can be . Direct drive mounts are usually reserved for high-end mounts and use a friction-based system to move the mount. Orion EQ-1M, EQ-2M and EQ-3M Electronic Telescope Mount Driv. Tracking without correction via autoguider over a period of one hour shows 0,68" peak to peak and 0,18" RMS, respectively (the setup used for this record was: ASA DDM85 and ASA 16N OK3). Direct Drive Mount DDM85. Philipp Keller, we saved significant development time and cost. I realize it is difficult to verify these points and may be limiting the system .... A late night with a seeing between 2 "and 3" arsec seeing was measured. A loosen type brake when not current is going through a coil is easy to implement. This single-arm fork mount can operate in equatorial or alt-azimuth configurations, and is rated to support up to 200 pounds of equipment (including its own CDK17 and CDK20 telescopes). In all cases, the periodic errors of worm and gear (see here measurements from many worm and gear equipped mounts) are completely absent. This experiment demonstrates how the axis and its engine are rigid. It also has a high torque belt drive motor mechanism. Found inside – Page 86Whereas the inner telescope mount is driven by the high - precision direct drives , the housing is moved by standard dc servo motors . All the motors are controlled by the same digital servo system inside the housing . Thus in most cases guiding is not necessary and the use of ancillary support systems such as adaptive optics (Starlight, SBIG) is no longer necessary. Mechanical wear of part involved in movements. Direct drive is a type of transmission system and it's unrelated to the mount style. Direct Drive motors on each axis provide smooth, and nearly silent movement. . This demo shows the new single arm portable direct drive telescope mount tracking the path of a satellite as it passes near the celestial pole. I may try direct driving the harmonic drive bypassing the 3:1 gearbox, I am pretty sure it will have enough torque. Officina Stellare is very proud to present a new mount for telescopes up to 80cm (or smaller telescopes arrays with a total payload up to more than 300Kgs in equatorial mode), available both in equatorial and alt/az version. The mount drive control is the key technique which mostly affects astronomical telescope's resolution and its speed. Also no more wasted time and frustration searching for a guiding star. PlaneWave have combined Ritchey-Chrétien optics with PlaneWave's direct-drive alt/az mount technology to set a new standard for research-class observatory telescopes. If you click over the image, a DivX video at 15 frames per second will be shown : The position of the Airy disk is measured 4 times per second, X is RA and Y is DEC: it is possible to show the tracking errors if they exist. Bad things can happen from the encoder to the telescope focal plane. The ASA mount was purchased a few years before he passed, he used it only a handful of times and then he put it to be boxed up and it has been inside since. In-Stock - Available at warehouse ships in 1-2 weeks. Found inside – Page 801Direct drive on both axes , i.e. only To bouse the mirror and also to have a sky coverage down to 230 ° above horizon ... Special mount Alt - alt design with the same tube ( optical ) configuration as for the " boule " telescope ... Recently, I bought a 8" Newtonian telescope that came with a Dobsonian mount. The yellow area shows where 90% of measured points are located from the DirectDrive system for comparison. Therefore we present them to you within an affordable price range. The "workhorse". For the time being, only the RA axis has been modified, the DEC has still a worm and a gear. Found insideAdjusting the telescope mount actuating arm bracket . the leveling pads of the actuating wwyo mount longitudinally . ... Adjust the cross - level vial as indicated in subparagraphs ( h ) through ( n ) ( h ) Drive out the straight pin ... So the star oscillations are only due. L-350 Mount Features: Load capacity of 100 lbs (45 kg) Direct-drive motors on each axis for smooth, fast, and virtually silent movement of the telescope. Since direct drive motors usually have a high power consumption rate, ASA developed its own low consumption motors together with a well established German company. Borrowing a page from the professionals, we too seek to overcome those issues with well-engineered, electronic solutions that come with a very costly price tag. Found inside – Page 1711-1 ) is almost identical to the New York telescope's mount , except for a slightly larger housing for the ... Each axis is equipped with a direct - drive torque motor , a tachometer generator , and a 16 - bit optical shaft encoder . This fits your . DDM100 ASA´s smallest telescope mount ASA Direct Drive technology with absolute encoders for high end applications. Model 125130Q CDK300Q - CDK12.5 FUSED SILICA (125104Q) WITH L-350 (600549) DIRECT DRIVE MOUNT CDK-300 Package - Save $590! The PlaneWave 8"-wide dovetail mounting bracket holds telescopes onto the inside of L mounts fork arm. 310-639-1662. Thus these mounts can be very quickly and easily used in the field. Low yield : drawing lot of current for a slow motion. Here are 4 out of the 7 images (X-axis is the RA axis alpha, and Y is DEC), It is located at RA = 15h30m25s and DEC = 4 ° 00'30", The results are rather good: the images are sharp, and the elongation of the stars below 20%. A pair of tensioner screws push the motor away from the driven pulley. In this paper we present results of research concerning a new direct-drive mount for optical robotic telescope applications, that are on par with modern SSA expectations. Feedback from our clients has shown, that the DDM85 also offers professional services to many academic and research institutions! Planewave direct drives are driven by magnets and the Planewave L-600 Direct Drive Mount has a 300 lb payload capacity. It combines advanced observatory-control software, TPoint's Total Pointing Integrity™ kernel, an industrial-grade three-axis direct drive motion controller, precision CNC machined components, precision bearings, high-resolution . 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. The ASA DDM100 Direct Drive Equatorial Mount takes away completely the need to "Guide" the telescope mount for advanced visual and astroimaging users. Found inside – Page 11-51CANNON TUBE M68 AND COMBINATION GUN MOUNT M140 INSTALLATION PROCEDURE TOOLS : Movable hoist ( 4 ton capacity minimum ) ... for procedures to : Install M114 telescope mount TM 9-1220-220-34 for procedures to : Install M10AS ballistic drive ... Very poor performing when dealing with very small back and forth movements, the back-lash can be very complicated to compensate. The direct encoder readings provide system performance monitoring. A mount for professional Astrophotographers and it is still suitable for portable use. A direct drive motor mount typically consists of a few things: * mount bearings (or mag flux bearings) * direct drive flux static magnets attached direct to the shaft . Showing 1-9 of 14 results . But it is still a drift and slow, which is not polluted by any periodic oscillation error. High Point has the best selection of equatorial telescope mounts, whether you are looking for a computerized equatorial mount or a manual equatorial mount. 178 Comments 764 Shares. However, we have managed to find ways to lower the cost of these incredible electronic solutions without compromising the performance quality. Integration has been achieved in a modified VMA-200. 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. It has been included as a static plug-in in Stellarium since version 0.10.3. The polar alignment has been carefully achieved using King method (pole distance of less than one arc-minute), the cables path have been optimized to avoid to pull the camera. Because of this excellent tracking, purchasing a direct drive dount can begin to immediately pay for itself over more traditional mounts. Found inside – Page 13-13TM 9-1240-273-34 Field Maintenance Manual , Telescope Mount M145 TM 9-1240-274-34 Direct and General Support ... M109A2 / A3 TM 9-2350-311-20-1 Organizational Maintenance Manual for Hull , Powerplant , Drive Controls , Tracks ... Perfect mount for a CDK 12.5" or 14", or any similar size heavy duty telescope. Here is the first plot showing 3 measurement per second during 10 minutes: The Y scale is expressed in arcsec, and does not show during 10 minutes any periodic error.

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