Calhoun213
Member
I have a Celestron 80mm Regal M2 that is equipped with a 17mm Baader Hyperion. Baader has two finetuning rings, one 28mm and the other 14mm. A very inexpensive solution to gaining some magnification. I read several reviews of the finetuning rings before purchasing and everything was positive, nobody had any problems to report. I purchased the 28mm Hyperion finetuning ring which should change the focal length to 10.8 mm. At shorter distances it works great but unfortunately it will not focus at infinity. None of the reports I read were specific to the Celestron. Anyone have any experience with the finetuning rings and the Celestron?