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  #1  
Old 18-04-2015, 08:46 AM
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alpal
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Wanted 10" f4 mirror high quality

I am building a carbon fiber 10" f4 Newt.
A medium quality mirror is on the way but I would like to
eventually install a high quality mirror.

f3.8 would also be ok.
  #2  
Old 18-04-2015, 09:07 AM
glend (Glen)
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Visual or imaging? There is a difference in quality requirement.
  #3  
Old 18-04-2015, 10:26 AM
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Quote:
Originally Posted by glend View Post
Visual or imaging? There is a difference in quality requirement.
Imaging.
  #4  
Old 18-04-2015, 01:18 PM
ariefm71 (Arief)
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How so? visual requires a better mirror?

Quote:
Originally Posted by glend View Post
Visual or imaging? There is a difference in quality requirement.
  #5  
Old 18-04-2015, 02:19 PM
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Quote:
Originally Posted by ariefm71 View Post
How so? visual requires a better mirror?
I want pinpoint stars when using an eyepiece & only then would I
bother attaching a camera to it.

Something that is tested to 1/8th wave pv on an interferometer would be a nice start.
If it was a cellular or honeycomb mirror then all the better.
I want to see what's out there to buy.

cheers
Allan
  #6  
Old 18-05-2015, 07:55 AM
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alpal
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Hasn't anyone got a good 10" f4 mirror?
 

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