Back to Home

Celestron Forum Message

Forums: Atm · Astrophotography · Blackholes · Blackholes2 · CCD · Celestron · Domes · Education
Eyepieces · Meade · Misc. · God and Science · SETI · Software · UFO · XEphem
RSS Button

Home | Discussion Forums | Celestron Equipment Discussion | Post

Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place...
The Space and Astronomy Agora
G 9.25 Collimation

Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To
Posted by William E. Jones on February 28, 2002 02:33:37 UTC

I have a G 9.25 that that seems to have an unusual out of focus appearance. When slightly out of focus the innermost diffraction ring looks like a pie with a narrow wedge taken out of it. It is the same on either side of the focus. I have had the scope for a year and once the G5 mount was greased and given oak legs is very stable for visual use. Yet the image even on the clearest of nights never seems stable much above 150x, so I am wondering what this odd pattern I keep seeing indicates and if it is limiting the capabilities of the scope? Anyone have ideas?

Follow Ups:

Login to Post
Additional Information
About Astronomy Net | Advertise on Astronomy Net | Contact & Comments | Privacy Policy
Unless otherwise specified, web site content Copyright 1994-2024 John Huggins All Rights Reserved
Forum posts are Copyright their authors as specified in the heading above the post.
"dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET"
are trademarks of John Huggins