I am letting go of my hardly used GSO 2" Coma Corrector. I bought it a couple of years ago from Andrews Communciations (who presently have it on sale for $149). You could import it from a US retailer for about $120 USD plus shipping, probably equal to Andrews current price.
Photos are attached, you can see it has no scratches or marks on the barrel, body, and the optics are as clean as the day it arrived. It stays in its original packaging in my study. It comes with an adaptor ring. Detail specs are here:
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
I m offering this GSO 2" Com Corrector for $80 plus shipping to your location. Please PM me if interested. Thanks.
