ATM Forum Message | |
| Forums: |
Atm ·
Astrophotography ·
Blackholes ·
Blackholes2 ·
CCD ·
Celestron ·
Domes ·
Education
Eyepieces · Meade · Misc. · God and Science · SETI · Software · UFO · XEphem |
|
|
|
|
||||
|
|
||||||
Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place... The Space and Astronomy Agora |
| Focal Length
Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To Posted by Jarvis Krumbein on November 20, 2003 16:40:29 UTC |
Dave, your plan of attack is the right way to go. As you get the ROC out to about where you want it to be, check often. You can hold the radius at the correct point by reversing the tool/mirror positions as required. If you are careful, you can control the ROC, and thus the focal length, to very close tolerances. Plus or minus a 1/2" is easy and careful measurement will allow you to hold it even closer.
|
|
|
| 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 |