Re: collimation query
- From: Chuck Taylor <invalid@xxxxxxxxxxxx>
- Date: Sat, 14 Jan 2006 18:39:22 -0800
The only reason I can think of would be if the focusser wasnt perpendicular to the tube. Does that sound feasible.
Believe it or not, the focuser doesn't have to be square to the tube. That may seem heretical, but there are actually scopes built where the secondary reflects at a angle closer to 45 degrees in order to put the eyepiece at a lower level. The downside with that big of an angle is the secondary needs to be larger.
The only thing the focuser needs to be centered on is the secondary mirror.
See collimation myths at http://web.telia.com/~u41105032/myths/myths.htm
Clear Skies
Chuck Taylor Do you observe the moon? If so, try http://groups.yahoo.com/group/lunar-observing/
If you enjoy optics, try http://groups.yahoo.com/group/ATM_Optics_Software/ *********************************************
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