This is the coma corrector that was made for Celestron by Baader Planetarium. I used it strictly for 35mm Tech Pan photography with my 10" f/6 Newtonian. It delvered a nice flat field across the entire film frame. The optic(s) and coatings are in pristine condition. There are some wear marks on the 2" barrel from focuser setscrews.
A small amount of adhesive is also on one side of the barrel which held shimstock in place to correct a slight amount of play betweem the focuser drawtube and corrector barrel.
Note: This is the photographic version only. There are 2 adapters to couple it to the visual system and that's it. The corrector threads into a standard camera T-ring and I'll throw in a Nikon T-ring for an extra $5.00.
I'm asking $115.00 for the corrector. I'll pay shipping in the CONUS.
Thanks for looking,