Quote:
Originally Posted by baileys2611
Thanks Mike. By the way, Ron Abbott from Land of Oz Observatory mentioned your name recently and said to say hi. 
Re your question - Gah! Maths! Here goes:
SBIG ST-i is 7.4 microns, I'm using off-axis guiding so the scope focal length comes into it. The scope is 2032mm f/8 (I like it a lot!).
I was binning at 2x2 during this guiding.
Based on the formula here: I get a calculation of 1.5 arcseconds per pixel. So, the graph would show an average error of 0.7 arcseconds error in RA and 0.5 in Dec I think? |
Ok well that's certainly not terrible
BTW how would you rate the overall astro conditions in the Murrumbateman area? ie. seeing, sky darkness, frequency of fog etc?
Cheers
Mike