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Old 06-09-2013, 03:36 PM
jase (Jason)
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Join Date: Sep 2006
Location: Melbourne, Victoria
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Quote:
Originally Posted by Joshua Bunn View Post
They recommend to refocus in various parts of the sky.
...
Im going to reenforce my secondary support system and see if that makes a difference.

Josh
That doesn't sound right Josh. What they've provided is a workaround, not a solution. A scope of this calibre should hold the optical train rigidly regardless of the azimuth or altitude it's pointing.

Is it the secondary support system moving or the slack on the hedrick focuser? I can understand refocusing the focuser if there was slack, but refocusing due to secondary support problems does not make sense. The fact that the primary and secondary are fixed in the CDK12.5 make me think its the focuser.

Granted, we refocus our telescopes at lot due to temperature or filter changes, but to correct for optical alignment problems is pushing beyond what is 'normal' imho.

I don't think I'd be taking the problem into my own hands and re-enforce the secondary myself. Box it up and ship it back.
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