Quote:
Originally Posted by Zuts
Someone correct me if i am wrong but...
The focal plane of any telescope is fixed, the reason eyepieces and ccd's focus at different distances is because of the distance of the lense elements from the end of the barrel or the distance of the chip from the end of the assembly.
To see if it can focus, calculate the rough distance of the ccd to the closest point of where the barrel attaches to the scope. Then see where the focal plane of the pst is. This can be done by pointing at the moon without an eyepiece and seeing how far back you can get a crisp image on say a piece of grease paper.
If the two coincide you should be able to acheive focus.
Paul
|
Correct, Paul... just a minor technical point though... it might be necessary to use the sun rather than the moon for a PST. I doubt a moon image would be bright enough

.
Al.