Cerdic wrote:
Cerdic wrote in
54:

I borrowed an Odyssey 1 (16", I think) telescope from my
school. I
started looking at some stars and Mars and noticed that the telescope
seemed badly out of collimation (it was collimated before leaving
school, I figured the transport changed that). Well, collimation
still seemed ok, but I found that the mirror is extremely dirty.

Is there a good way to clean the mirror? Can I just pop the
back
open, take the mirror out, and clean it with a water/isopropyl alcohol
mix, or is this something I shouldn't mess with?

Ok, on everyone's advice, I won't attempt to clean it.

So, I'm back to collimation... I tried tweaking the collimation by
adjusting the primary mirror, but the screws do absolutely nothing. I
don't think the scope has been used in ages and probably needs some
maintenance performed on it. I guess that I'll just haul it back to
school.

Hi:

The Odyssey uses push pull bolts for collimation. Unlock the locking
bolts (the bolts are in pairs, one is a lock bolt, one an adjustment
bolt) and collimate. Not easy for a beginner. Like the mirror, probably
best just to leave it alone. The ol' 13.1 was not a bad scope, but not
overly user friendly when it came to collimation (though once you had
it "in" and the bolts locked down, it held its adjustments well.

Peace,
Rod Mollise
Author of _Choosing and Using a Schmidt Cassegrain Telescope_
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