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Does Mono DSI need a UV filter for guiding?
After some very generous help yesterday from Peter_4059 to cut a suitable thread on an old 2"-1.25 adaptor, I now have all the bits to mount my DSI Pro II mono on the back of a generic SW 8x50 finder for guiding purposes, as has been discussed here in previous threads. The concept looks good and I have been able to check focus range using handheld approach today.
My main question: Do I need to use a UV/IR reject filter in front of the sensor to reduce excess sensor "light overload" or doesn't it matter?
Secondly, how much "movement" does the generic dovetail+finder-mount arrangement cause when using to hold the guider with a ~200 gram DSI on the back?
I have a couple of small guide rings I could use, but prefer to keep things as simple as possible.
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