I'm in the planning stages of a dob ATM project and need some advice. I haven't done too much observing with any large dobs, just looks through some friends instruments. I have a XT10 and an LX200 8".
I'm to the point of ordering the primary mirror and here are the choices I've narrowed it down to. I've decided on a Stevens mirror.
14.5" f/4.3 1.6" thickness
16" f/4.5 1.6" "
I'm 5'6" and with the 14.5 I'll probably get away with just a small step stool for the zenith and using my adjustable chair for lower altitudes. I will probably need a ladder with the 16" F/4.5?
My main questions are:
1) With the XT10 as my smaller scope is the 14.5" a big enough jump in aperture?
2) Will I see much difference in the 16" compared to the 14.5"? The 14.5 will be a bit more manageable for one person to transport and I guess a smaller or, no step ladder?
3) With the 1.6" thickness would a 9pt. cell be adequate for the 14.5? I figure the 16 would need the 18pt.
4) Lastly, is a mirror cell fairly easy to make? I'm an experienced woodworker but I have no way to cut metal and would need to hire a metal shop to cut the triangles and bars. I would like to make it myself just because, but if it would be less expensive in the long run I'd rather buy one. Where are good places it but one? Again, any opinions would be welcomed.
Sorry if all this has been covered before. I spent some time searching past posts, but haven't found everything I need after many hours of reading. BTW I'm using Kreig and Berrys book.
I getting excited to begin this project!