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Hi Dennis
Al answered perfectly the question of why I use a red filter when capturing the moon.
A UV/IR filter is a single filter. If you get an astronomiks set of filters (LRGB type II, around $350), they block UV/IR as well. They only allow the red wavelengths and block everything else.
If you're getting a monochrome DMK, then if you ever want to capture colour images you'll need a set of RGB filters. The astronomiks are among the best but they're not cheap. You won't need any other filters on top of that. They are 1.25" and can screw in independently to the nosepiece, or using a manual or automatic filter wheel, then you store them in the filter wheel and change filters when the need arises.
The astronomik's come with the "L" or "clear" filter, which blocks UV/IR only and allows all other wavelengths through. This is effectively your UV/IR filter. It will allow more light through and allow you to use a shorter/faster shutter speed when capturing the moon.
But as Al points out, in good seeing the red filter can help capture a sharper image by blocking other wavelengths as it's less scattered by the atmosphere.
The clavius image I captured is probably my best lunar image to-date, so while it's good to strive for that, it's certainly not something I can expect, or you can expect, to capture each time out at the telescope. The seeing was very good that night, and I used a 4-panel mosaic with my 12" telescope and a 5x powermate, so the focal length was over 10.5m for each panel.
With your 10" lightbridge, you won't get near that focal length so it will be a less-magnified image but that can also help you to get a sharper image when the seeing isn't so good. At longer focal lengths, you really need the seeing to be very good to capture sharp images.
Good luck with the DMK and keep asking questions.
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