Image of the day

Captured by
Douglas Rollain

M20 Trifid Nebula in LRGBHa

My Account

New to Astromart?

Register an account...

Need Help?

G-11 and Cassegrain Collimation

Started by kins, 03/06/2005 05:00AM
Posted 03/06/2005 05:00AM | Edited 03/06/2005 05:02AM Opening Post
I'm working on Collimating a Cassegrain. I use an artificial star set up about 200 feet away from my scope. Great set-up, but the only problem is my G-11 tracking moves the artificial star out of the field of view so quickly.

I need to keep the mount "on" while I'm collimating so that I can return the Artificial star to the center of the eyepiece after each adjustment.

The question is: is there a way to keep the Mount "on" so that I can manually slew the Artificial star back to center, and at the same time have the tracking disinguaged?

Thanks,

Steve
Posted 03/06/2005 07:34AM #1
Polar-align your R.A. axis on your artificial star?? -- William
Posted 03/07/2005 01:10AM #2
Steve,
I have a C-14/G-11 combo. I set my mount up facing E, do not turn the motors on, and put the scope on Polaris. I collimate off Polaris and center the star manually. Works fine for me.

Hope this helps.

Harry