Back to Home

ATM 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 | Amateur Telescope Making | Post

Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place...
The Space and Astronomy Agora
Need Advise

Forum List | Follow Ups | Post Message | Back to Thread Topics
Posted by Rick on November 26, 2001 02:17:31 UTC

Ok, i did a thorough test of my 10"mirror tonight, and i am thinking i should go back to fine grinding, the mirror under focault has a depressed center, T.D.E.(1/4")and a raised outer zone about3-1/2" out to turned down edge, now under ronchi, well, hey it just looks terrible, no straight lines lots of wiggles and of course the t.d. curve, now i am using the pads but ...i want to make a pitch lap, and before i do that i need to know if i should continue onward or first go back to fine i being overly concerned here, i know they look worse than they really are....but man this looks bad.
Learning as i go here, but not complaining, rather injoying myself.
Thanks for the help.

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 1994-2023 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