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Right! First thing I checked when I had the scope out under the stars was the focus point for each filter. I guess I've been spoilt a little with the RC8, once focused in a session it rarely needs a tweak.
Just on the topic of focusing... for a bit of fun, I made a DIY motorised focuser (Arduino with temperature) and mounted it to the stock GSO crayford. Bit of a disaster as the stepper motor I used didn't have enough torque to move the crayford, as this needed to be tightened to support the imaging train.
Bought a moonlite from Ron about a month back and only just found the time to build a mounting bracket. Works a treat and I'm getting predictable and normal V curves in SGP now. I'll keep an eye on it over winter but we've had some cold nights here from warm days and I haven't noticed the focus shifting. This is a steel tube RC8 too.
Don't think I need to fit a focus motor it to the ED80... or do I?
Clouded out here too :-(
Tim
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