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Old 19-03-2015, 07:26 PM
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Rac (Raymond)
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Join Date: Dec 2012
Location: Whangarei, New Zealand
Posts: 120
Quote:
Originally Posted by dave brock View Post
A superb result, Raymond. Well done.
Time to check that Royce 10" for a possible refigure?

Dave
Haha yeah. I did have a look at it with the ronchi screen. It has something funky going on at about 75-80% I'll have to take a pic of it, it looks more like a patch of bad roughness than anything else. It was a few months ago i looked at it. It produces really nice images and views so i can't see me doing anything to it. My next project other than a scope for this mirror is a vacuum chamber.

I had a good compare between the 10" Royce and this 18" mirror tonight. I couldn't really see anything between them other than Jupiter's moons were smaller in the 18", the seeing wasn't that great but i would give the edge for detail to the uncoated 18". I need to make a real scope for it as collimation is inconsistent with my test Dob scope i've made for it.
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