I recently got a 100mm f/8 achromat in a nice metal cell, and want to build a scope around it for use with a DayStar Quark. I also have a decent 2-inch, 2-speed Crayford focuser. I don't yet have a Quark, and have never used one. I'd be grateful for advice. I plan to use the scope only for solar, but would like to use it for both viewing and imaging, if possible.
I built a 'telescope on a stick' today, so I can figure the length of tube I need for this scope (and three others I'm building). What should I know for planning the Quark's use in the train of the scope? Can I imagine it like, say, an eyepiece with a given focal length, and use a comparable eyepiece to plan the length of the tube? If so, what would the focal length of that eyepiece be? Or am I thinking of this incorrectly?
By the way, if it makes any difference, I have a 0.8x focal reducer, and already have a Baader IR/UV cut filter.
I don't have a camera yet, so any suggestions for one would be appreciated, too. I have lots of other refractors -- 80mm f/11 and f/15; 90mm f/10; 100mm f/4.5, f/6.3 (apo) and f/10; 115mm, f/4.5; and 150mm f/10 -- so a lot of choices. This 100mm f/8 will be the only one dedicated exclusively to solar, but a camera to use for both solar and other astro imaging, both wide and narrow-field, would be best. I've been away from camera development for a few years. Oh, and our observatory has a 10-inch SCT and 14-inch f/4.5 reflector.
I'll be using this scope and camera for myself, but it will also be used by other club members, and for public outreach.