Posted by David Arditti at 13:50 on 2010 Aug 13
No to gelatin sheets – thing of the past. As to the normal, glass 1.25 inch screw-in filters for visual use, all the major manufacturers seen to make pretty much equal quality. Celestron, Orion (US), Meade, Baader, all very similar in my opinion. For visual use you don’t need IR cut, it’s cameras that are sensitive to IR, not the eye.