Unitron Schmidt Cassegrain? I have just purchased a Unitron 8" Schmidt Cassegrain that is said to be approximately 40 years old (I don't know if this qualifies as an "anitique"). I already have a Unitron refractors of 4" and 2.4" size, but haven't previously heard of a Unitron Schmidt-Cassegrain. Can anyone fill me in on some history of this instrument?
Jim
Jim
