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AT8RC FWHM results finally got a good night to do

Started by fblue, 09/20/2009 02:49PM
Posted 09/20/2009 02:49PM Opening Post
Well, after working on the collimation and waiting for a good night, I got a CCDInspector graph on the AT8RC showing the FWHM for the scope. Collimation is still not perfect, off by 6.8", but the seeing has just not allowed me to do better than this so far. Hope to get it even closer with the fall skies as they are usually better.

This was a 10 minute exposure with no dark subtract or any processing, just as it came from the camera. 1.67" with a max of 1.99"! I am very pleased. This is about as good as one could expect from an 8" RC. This was at 1.17" image scale.

I will post the image of the Pelican when I get the chance to process all the data. I did a total of 12 hours of HA, LRGB.

Attached Image:

fblue's attachment for post 48353

[SIZE="Large"][/SIZE][COLOR="Blue"][/COLOR] Floyd Blue grin
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