Jeter_ClaytonCollimation: Schmidt-Cassegrain, by Clayton Jeter


When looking at stars through your telescope, do they appear large and distorted instead of perfect points of light? While sometimes this is the atmosphere, quite often it is because one or more optical components in your scope are mis-aligned! This can also waste light coming from your primary, resulting in dimmer views of objects.

This class will show you how to collimate your Schmidt-Cassegrain telescope without using a laser.

You’ll learn the basic principles of collimation of the focuser, secondary mirror, and primary mirror.

It will include the use of a “star test” at night (or daytime with tool) to really optimize your telescope’s performance.  

We’ll emphasize the techniques you should use when adjusting the secondary mirror alignment screws.


Suitable for absolute beginners, plus anyone wanting a refresher


Daytime session (1 hour)

Tuesday May 12, 2015  2:30-3:30 PM