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Group Information

  • Members: 4264
  • Category: Astronomy
  • Founded: Jul 8, 1999
  • Language: English
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Activity within 7 days:

5 New Members - 140 New Messages - 9 New Photos - New Questions

Description

A mailing list for the users of commercial Schmidt Cassegrain Telescopes hosted by the inimitable "Uncle" Rod Mollise. Users of the similar Maksutov Cassegrains, including the ETX, the Questars, and the INTES MAK-CAS telescopes are also welcome....

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Re: Secondary centering
... I forgot to finish that: by "fix" I meant removing the corrector to fix it. But move the sec so it's centered in the hole, and then follow Robert
Posted - Wed Jan 6, 2010 11:05 pm
John Mahony
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Re: Secondary centering
That's another major possibility. Peace, Rod Mollise Rod's new book: _Choosing and Using a New CAT_ Available Now! <http://skywatch.brainiac.com/astroland> ...
Posted - Wed Jan 6, 2010 10:14 pm
Rod Mollise
rmollise
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Re: Secondary centering
I've heard of one case where a person managed to tighten his sec holder by pulling outward on the holder (to snug the inner sec baffle against the corrector)
Posted - Wed Jan 6, 2010 10:01 pm
John Mahony
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Re: Secondary centering
If by "differential refraction" you mean the color effect of atmospheric dispersion, I don't think it's that, since that produces obvious color differences,
Posted - Wed Jan 6, 2010 9:54 pm
John Mahony
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Re: free telescope..!
The one I've seen has a simpler lens hood (cut straight instead of angled), and a basic 90 degree diagonal instead of the odd ball-shaped 45 degree one shown
Posted - Wed Jan 6, 2010 9:47 pm
John Mahony
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