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Old 06-05-2008, 08:19 PM
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Tandum (Robin)
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Join Date: Apr 2008
Location: Wynnum West, Brisbane.
Posts: 4,167
GSO 10:1 Crayford on a Skywatcher 8" DOB

Rang Andrews yesterday arvo and the focuser arrived today. I was expecting it towards the end of the week, cheers to Andrews.

I have already pulled it apart and greesed it up as described here :-http://www.backyardvoyager.com/gsofocuser1.html

I removed the old focuser and noticed I'll need to enlarge the old mounting screw holes a little as the GSO mounting bracket holes don't line up exactly with the existing ones in the tube and either get longer screws or counter sink the GSO holes a bit to get it installed as the existing screws are too short.

But the old focuser has a flange that fits snugly into the draw tube hole while this one has no such flange and can be moved around a bit in the mounting position. So there is a chance it won't end up in exactly the same position as the old one.

Will I need to colliminate the scope once I finally swap the focuser or does collimiation purely deal with mirror alignment
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