Sporting the large light bucket users have come to expect from a Dob, the Sky-Watcher Classic 200P 8" Dobsonian Telescope optical tube assembly allows bright, detailed observation of deep sky objects using a simple design. Its large parabolic Borosilicate primary mirror is treated with an aluminum coating that brings its reflectivity to 94%, with a secondary mirror obstruction of just 6% by area. The OTA features a smooth 2" Crayford focuser with an adapter for 1.25" eyepieces, a 9x50 finderscope, and 25mm and 10mm eyepieces.
Optical Tube Assembly
- 8" (200mm) aperture can resolve dim deep-space objects, like wispy nebulae and galaxies
- Fast f/5.9 focal ratio ensures a wide field of view & maximum light throughput
- 1200mm focal length helps to produce the fast focal ratio and magnification range
- Borosilicate parabolic primary mirror with aluminum coatings that bring the reflectivity to 94%
- 25mm and 10mm Super Kellner eyepieces for 48x and 120x magnification, respectively
- Resolution: 0.57 arcsec (Dawes Limit), 0.69 arcsec (Rayleigh Limit)
- 48mm diameter secondary mirror; Obstruction: 24% by diameter, 6% by area
Focuser
- Crayford-style is much more precise than the traditional rack-and-pinion
- Tension control system eliminates gears, resulting in zero backlash for tack-sharp focus on dim objects or objects, like binary stars, that are close together
- 2" diameter holder allows the use of larger eyepieces and imaging systems that provide a wide field of view and long eye relief to make viewing dim and small deep-sky objects more comfortable
UPC: 050234161015