Это клон Паракорра. Россы с ним сравнивать бессмысленно. Касательно переделок - как для Паракорра, на старых Крейфордах SW - колечко расточить слегка.
То есть, надо брать?
Под астрофото есть такие?
Я так понял, фокус с ними чуть увеличивается?Погулил, нарыл:
NEW! GSO 2" Coma Corrector for fast Newtonian Telescopes
3-piece modular design (i) Optics in 2" nosepiece with 48mm male filter thread (ii) 2' eyepiece barrel that attaches to optical nosepiece, and (iii) M48 - T2 adapter ring
Design optimized for use at f/4.5 but will work well from f/3 - f/6
Reduce coma and field curvature
Designed for visual and photographic use
Magnification factor of only 1.1x
Fully multicoated optics (4 elements / 2 lens groups) with a clear aperture of 43.9mm / 1.73"
2" nosepiece features recessed safety groove and is threaded to accept standard 2" filters
2" eyepiece barrel features brass compression ring and dual large thumbscrews
For visual use, connect the 2" eyepiece barrel to the main optical nosepiece (as shown in photo 1 above)
For photo use, unscrew the 2" eyepiece barrel and attach the included M48-T2 ring to the main optical nosepiece (as shown in photo 3 above). Then attach your D/SLR camera to the male T2 thread via a camera-specific T-ring (not included)
Back-focus spacing requirement is approx. 70mm from the shoulder of the 2" nosepiece to the image plane
Есть у него какие-нибудь "подводные камни"?
Для астрофото он будет лучше, чем MPCC?
