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Old 30-08-2013, 08:03 AM
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Colour is over-rated

Lee is offline
Join Date: Sep 2005
Location: Newcastle, Australia
Posts: 2,414
Originally Posted by Shiraz View Post
I have just started calibrating mine, but do not think it varies quite that much. I currently need to refocus at about 2C change in temp, but of course that will vary with seeing. will PM when I have more data. regards ray
After a more critical look through my FITS headers, I don't think mine is as much as I indicated - focus does wander, but seems to oscillate around a fairly constant amount over a degree or two, probably local seeing fluctuations and the 10-step wide CFZ....

How do you ensure good Dec balance Ray? I've noticed now I've changed from SBS to a single OTA/OAG I need a rear counterweight to have any chance of balancing my Dec axis....
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