Re: [APML] Forcing mirror flop in SCTs.

[Matt BenDaniel <matt@starmatt.com>]

I would test that by focusing on a star near the horizon. Then slew the scope to within 10 of zenith and see if the focus changes.

Matt

At 10:04 AM 11/20/2002 -0800, Alan Voetsch wrote:
>Hi Scott,
>
>--- Scott Hammonds <capella@creatorsview.com> wrote:
>> I'd like to
>> know more about forcing mirror flop, I'll look
>> through the MAPUG
>> archives. Thanks,
>
>I think I'm going to go ahead and post this to APML
>too. I know plenty of us use SCTs.
>
>I picked up this info on SBIG. Adam Block mentioned
>this procedure, and I asked him what he was talking
>about. I've tried this and it works well to reduce
>mirror related issues, of which there are many.
>Procedure follows:
>
>Before you start imaging, lower your OTA towards the
>horizon (which horizon depends on which part of the
>sky you'll be imaging in). Turn your focus knob in and
>out a bit. This should get the kinks out of the
>system. Simply fine tune your focus and go about
>imaging. This should hold pretty well until you cross
>the zenith. 

--
Matt BenDaniel
matt@starmatt.com
http://starmatt.com


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