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 |
| Re: ?Image Plane?
Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To Posted by Robert May on August 31, 1998 19:20:50 UTC |
The image plane is where the image is first formed. It is also called the Focal Plane. It almost always found inside the focuser and you can consider the opening of the focuser towards the scope as the largest image plane that you can get. The actual image plane is to be found in your EP where the aperture stop is. That is that odd ring that you just quite can't figure out what it is for. Looking through the EP into a bright field (in the daylight for example) will show a sharp edge to the field of brightness when the eye is close enough to the EP. Putting something up to the same place as that ring will bring the object into focus! Alternatly, you can use 1" as the dimension for a 1.25" focuser or 1.75" for a 2" focuser for the image plane dimension. |
|
| 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 |