From: Ray Byrne <ray@in4media.co.uk>

Date: August 31, 2009 6:33:40 AM MDT

To: astro_iidc@yahoogroups.com

Subject: Colour Jupiter from Ray


Hi Guys,


On Saturday/Sunday I took some movies of Jupiter in pretty bad seeing but actually better than the last few weeks. Out of them I got one OK result which I've posted in the photos section on our site. When I came to do the colour processing (it was in the small hours) I got muddled-up somehow and and kept getting a mono result. Frustrated and impatient I sent the LRGB set to my mate Mick Hyde to do the colour bit for me which is the result you'll see.


Now he uses the same gear as me but being a PC/Windows guy uses the K3CCD Tools/ Registax combo for capture and processing and remarked that my LRGB set were very dark. To quote Mick he said " Ray, There you go. The images were very dark though, I had stretch them with curves in PS. I think you need to check your histogram whilst capturing and boost the gain a bit."  Two things about this what would be the equivalent in Astro IIDC of the histogram he's referring to? and should a fiddle with the gain? As regards the gain I always keep that set to 1.00 and use brightness instead, but of course the more you increase the brightness the noisier the resultant image is it seems, should a adjust the gain? Here are reduced sized files before processing in PS:


(actually this is the first time I've seen them in daylight they are very dark)


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ATB


Ray Byrne