It may ultimately be a lot cheaper and yield better results to buy an Orion 8" Tube that already has a 2" Crawford on it. Bob -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Jonathan Larsen Sent: Friday, March 18, 2011 9:29 AM To: Utah Astronomy Subject: Re: [Utah-astronomy] Looking for a crayford focuser for my Orion 150mm
Jonathan, If you are going to upgrade your focuser, a 2" is your likely your best option. There are many 1.25"/2" adapters available. This does mean you have to bore a bigger hole, though.
Boring a larger hole in my tube sounds a bit scary. I guess a dremel with a grinding stone might be a good way to go for that though? What type of telescope are we talking about? Good stable focusers can be
as cheap as $40 (a helical) or over $500 for fancy crayford's with anodized colors.
It's an Orion 6LT. Ya, i've seen the fancy moonlight crayfords, my 150mm isn't worthy of one of those. :D I know the less expensive GSO or Zummell alternatives are fairly cheap but I would really like to spend even less than what those are going for new. Hopefully someone here has something around that range? :D
My focuser had some slipping issues and adding a motorized focus solved them. The alternative was more expensive because the tailpiece and focuser are one.
Erik
The focuser doesn't slip, it rocks back and forth. It made collimation a PITA. If i tighten the set screw, it doesn't.... but that's pretty obvious why. :P Ha ha.
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