Quote:
Originally Posted by Moon
Jase - Not having researched that stats myself, do you think they would get more clear nights than Gippsland?
James
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About the same James. Need to go further inland to improve on the quantity of clear nights. Having clear nights is one thing, but clear nights with good seeing is a completely different aspect. There were quite a few nights where the OAG guide star was all over the place. I did struggle with gradients when imaging targets in the east with this rig. Difficult to say if it was related to local conditions or something much broader.
Quote:
Originally Posted by gregbradley
So RBI wasn't an issue with the U09000 at all? Did you image anything with something bright in it or focus on a bright star that the afterimage then persisted in later images? I only refer to complaints about the 09000 chip (FLI or Apogee or any camera) about it being very sensitive to RBI. Did you use the RBI flush tool? I think it only operates in Maxim like the FLI one.
Greg.
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Greg, I operated the U9000 at -20 or -15 most nights. RBI appears to be longer lasting the cooler the set point. RBI was present, but manageable. Actually, I turned on RBI flushing in MaximDL over a set of subs and found whilst it works, it introduces random noise...noise that does not have the same signature as the calibration frames hence took additional work to 'clean' the image in post processing. I left it turned off for the rest of the acquisition as I felt it didn't warrant an improvement. I'd be more than happy to put up with RBI given the gains in sensitivity.