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Bad Focuser

Started by darryls, 09/25/2006 05:51PM
Posted 09/25/2006 05:51PM Opening Post
My 6" newtonian came with a 1.25 R&P focuser. There is quite a bit of anoying "waggle" in this focuser. I would like to replace it with a crawford style focuser. I see many 2" crawfords, but havn't seen a 1.25" one.
1. Does anybody know of a source for 1.25" crawfords?
2. Would putting a 2" on my scope obstruct too much of the light path, thereby reducing contrast to an unacceptable level?

Thanks!

Darryl
Posted 09/25/2006 06:01PM #1
Look here for 1.25"

http://jimsmobile.com/rcf_data.htm
Posted 09/25/2006 08:28PM #2
Hi Darryl

I agree the JMI is a great focuser. While waiting for it to arrive you can improve the cheap plastic one in two ways. First if you put some teflon tape or even scotch tape on the focuser tube it will remove alot of tube slop. Second if you add some vaseline to the rack it will eliminate a lot of the slop to the rack. Once you do this wipe all the access off so you don't get any on your eyepieces.

Good luck
Dave
Posted 09/29/2006 11:23PM #3
JMI has them for around $100. Also try University Optics.