Ok, I'm fairly new to the hobby and need some help. I'm thinking about piecing together my own scope. I have a 10" F/5 tube and need a primary mirror to go with it. I found a 10" F/4.5 and 10" F/4.8 primary mirror. What do I have to do to get these mirrors to work with my F/5 tube? Can I just lower the spider/secondary down a bit in the tube? Or do I have to bring the primary mirror cell up? Any opinion on which focal ratio mirror to go with?
BTW, what size secondary should I use for this scope? Thanks in advance!
BTW, what size secondary should I use for this scope? Thanks in advance!
