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The Vixen VMC200L Telescope 200mm and GPD2 Mount 99704M and 99704 Set is a unique catadioptric telescope system. It incorporates a primary mirror and a meniscus corrector just before a secondary mirror. By doing so, light
is corrected twice on the optical path. The end result is that spherical aberration and field curvature are corrected to a high degree of optical telescope performance. Vixen's VMC200L Telescopes primary mirror is f/2.5; the compound optical system is f/9.75. This combination creates a very compact and portable system. Placing the optical correction placed before the secondary mirror avoids the necessity of having a corrector plate and the dewing problems associated with a closed optical telescope tube. The rack and pinion focusing is placed behind the primary mirror. The use of this focusing system eliminates the image shift associated with most other SCT telescope systems. This is especially important when using high power magnification or astro-photography. When focusing, the image is stable and easy to adjust. The GPD2 equatorial mount is the stronger and heftier of the GP mounts. With its solid steel R. A. and Declination axes and brass worm gears, this mount will hold up to years of heavy use. In order to assure accurate tracking for astrophotography enthusiasts, the worm gears are especially machined to a very high precision that minimizes periodic error. Add the D2M telescope motor set for accurate tracking. For a full line of Vixen Telescopes and other products by Vixen on sale please visit the Vixen Telescopes page on our website. For more brand name Telescopes please visit our Telescopes store section.
| Construction: | Catadioptric reflector d=200mm (8")f=1950mm, f/9.75 |
| Primary mirror: | f=500mm, f/2.5 |
| Secondary mirror: | d=72mm, magnification 3.9x |
| Distance primary secondary: | |
| Central obstruction 80mm diameter (40% of d): | |
| Theoretical resolution (Dawes): | 0.63" |
| Theoretical min magnitude: | 13.3 |
| Tube length: | ~525mm incl. focuser |
| Weight: | 5.9kg |
| R.A. Slow Motion Axis: | 144-tooth wheel gears whole circle movement |
| DEC Slow Motion Axis: | 144-tooth wheel gears whole circle movement |
| R.A. Graduations: | 10 min increments |
| DEC Graduation: | 2 degree increments |
| Polar Axis Scope: | 6x20mm, wide 8 degree field of view |
| Altitude Adjustment: | 0 to 62 degrees (2 degree increments) |
| Aximuth Adjustment: | Double screw fine adjustment |
| Motor Drive: | Optional, with STARBOOK-S or D2M motor drive set |
| Maximum Loading Weight: | 35 lbs. |
| Counterweight: | 1.9 kg (4.2 lb) and 3.7 kg (8.15 lbs) |
| Weight: | 8.5 kg/ 18.7 lbs (without counterweight) |
Vixen VMC200L Telescope 200mm and GPD2 Mount