#40425 Oct 31, 2008
I've been working on a new collimation routine for the CCDInspector
software. To test the results of the collimation adjustments, I took
some test images over a period of three nights (scope was re-
collimated each night).
NGC281: total of 4 hours H-alpha exposure, ST10xme camera, a 10-year
old, beat-up Meade 10" SCT OTA at 2600mm FL, Titan50:
The star FWHM values during this test were record-setting for my
location. The lowest I've seen in an exposure of 20 minutes was FWHM
of 1.7 arcseconds, with most frames coming in under 2 arcseconds!
The combined stack of all the images had the final FWHM of just over
2 arcseconds, which is also a new record for me.
I guess I can attribute this result to my new collimation routine
G>, but probably good seeing and smooth guiding also helped :-)