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Troubleshooting FAQ | Problems? PM a Red or a Green Gu.... uh, User
Yedgy
member
Reged: 07/22/08
Posts: 43
Loc: Phoenix, AZ, USA
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I'm planning to use an off-axis guider on my 8" SCT with an autoguider and have some concerns about bringing the autoguider to focus. The OAG I plan to get is the Lumicon Easy Guider for SCTs and the autoguider is the Orion StarShoot AutoGuider. I'm clueless as to how to bring the autoguider to focus. Will I need an extension tube, and if so, how long? Should I get a helical focuser for fine focus, like this one from Borg? Is the guideport somehow parfocal with the camera port?
I'm curious as to what works for others.
Thanks!
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Somewhere, something incredible is waiting to be known. - Carl Sagan
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Jaxdialation
Carpal Tunnel
Reged: 04/01/07
Posts: 1760
Loc: St. Augustine, FL
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This distance from your OAG's mirror to your guider CCD and
your OAG's mirror to your Main CCD need to be equal.
So focus shouldn't be a problem, everything is equal distance from the mirror.
Go to Astrodon's OAG site for more info.
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John
Someone please make sure that when I die, my wife doesn't sell my astro gear for what I told her I paid for it. SST/Tak/RCOS/SBIG/CCDWare
New Zhumell Owner? Read this: New Zhumell Owner Upgrade Mega Thread
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Yedgy
member
Reged: 07/22/08
Posts: 43
Loc: Phoenix, AZ, USA
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Thanks, John! I was hoping that this would be the case.
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Somewhere, something incredible is waiting to be known. - Carl Sagan
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