Hi All, Jupiter's been playing hard to get, AGAIN. I'm losing count of the number of time I've set the alarm for 4am only to find cloud, rain, or worse, a clear sky that clouds up just as I get the neximage fired up
. This morning was no exception. Full cloud cover at 4am so went back to bed. Got up to yell at the dog at 5am, found a miraculously clear sky and fell over myself trying to get everything up (lucky the scope was well cooled) and running while the sky rapidly brightened into blue, rushing focus etc and snapping of four avis at a range of exposures. Seeing was good at 7/10.
Bit dissapointed when I processed though that while there's a reasonable amount of detail, there's an annoying onion-ring effect that comes out no matter what I do on each AVi. I'm aware this happens with under-exposure, but these weren't, at least by the light meter - the one here was running 225 on the light meter in K3CCD tools. All I can think is that with the sly brightness this created the same effect as under-exposure or something. Anyone got any ideas, doubt the avi's can be salvaged?
Anyway, pity as it would have been a decent enough shot otherwise.
cheers,