|
My biggest disapointments were with the 5 and 6inch acro refractors. After being amazed looking through a 4inch f/15 Unitron refractor back in the late seventies, on returning to this hobby in 2002, i drooled over the big acros. After using 4,5 and 6inch f/8 to f/10 units, i found the average 6 to 8inch newts were much better. I currently have an Celestron C8 new, and a 8inch f/6 eq. mounted newt with a Parkes mirror in it. No substitute for quality i guess. I really did want those acros to work. The worst scope i had was my first main one, a KMart 114 eq reflector. I discovered the secondary was distorted by too much by back pressure in the mounting, pushing it against the two points on its major axis. Replaced it with a new one by mounting it with double sided foam tape. With the secondary bent along the minor axis it showed stars as crosses at focus. The C8 has very good optics, and on a eq5, is a comfortable observing experence.
|