Shiraz
29-12-2012, 06:42 PM
It's getting higher now and the seeing was good in parts with a strong onshore wind and 200hPa winds running below 30kts at last. It was interesting to watch the small clouds scudding across - they were associated with pockets of appalling seeing and there were also similar clear pockets of turbulence that did not contain a cloud, but which totally destroyed seeing for a few seconds as they passed. In between, there were patches of pretty good seeing for the altitude (32deg for the attached image)
The ADC enabled a high framerate broadband L image, which made all the difference - the LRGB is a lot better than the equivalent RGB. Also have some Jupiter imagery from the previous night, but will not get time to process that for a day or two. Made time to process my first useful Saturn data for this apparition though.
Now I have to remember how to process this stuff - probably overdid it a bit on this one and hurt the crepe ring in the process, but it brought out some feature changes since the planet was last visible. The storm remnant band extends further pole-ward and the polar dark region looks smaller. And of course the rings are much more open now. It is great to be able to image this fascinating planet again. Thanks for looking. Regards Ray
The ADC enabled a high framerate broadband L image, which made all the difference - the LRGB is a lot better than the equivalent RGB. Also have some Jupiter imagery from the previous night, but will not get time to process that for a day or two. Made time to process my first useful Saturn data for this apparition though.
Now I have to remember how to process this stuff - probably overdid it a bit on this one and hurt the crepe ring in the process, but it brought out some feature changes since the planet was last visible. The storm remnant band extends further pole-ward and the polar dark region looks smaller. And of course the rings are much more open now. It is great to be able to image this fascinating planet again. Thanks for looking. Regards Ray