Quark
18-09-2009, 03:33 PM
Hi All,
Imaged Jupiter last night, Sept 17th in very good conditions. The last few weeks we have had strong winds and a lot of raised dust. It rained, lightly most of the day and the rain was very widespread through South Australia. Our weather systems move over S.A. on the way to Broken Hill so the dust in the atmosphere had been well and truly washed out.
The cloud cleared just before Sunset and the high pressure system heading my way was obviously starting to effect the local air mass.
For my imaging session of 3 1/2 hrs the seeing varied from 6 to 8 / 10.
I have posted 3 RGB's, these are among the best images I have taken for this apparition, probably any apparition.
The majority of my processing is done on 150% up sampled images. When I have finished I normally reduce the image size back to original at 640 x 480 pixels. This data was so good that the finished 150% up sampled images looked pretty good in their own right.
The images I have posted have been sized down to 700 x 525 pixels, still larger than original but lose nothing in crispness and detail.
As a matter of interest I have also posted the re sampled 150% versions. As, even in JPG format they were larger than the permissible 200kb I have reduced the quality a little to post them.
Have also posted a Polar projection of the Wesley Impact plus a Polar animation.
http://www.iceinspace.com.au/uploads/20090917JupPolarAnim.gif
The first two images have Europa in transit to the left or East, Europa's shadow transiting just to the West of the CM and Ganymede to the right. There is some very nice detail with Ganymede. There is some amazing detail within the NEB with some very delicate pale blue swirls that I have never imaged so well previously.
The third image has the GRS, the very thin blue line just inside the Western edge in the shape of a large C. There are some extremely well defined white ovals in the South Temperate Zone and the Wesley Impact remnant is very well defined as it rotates into the South Polar region from the West. The red spot following the GRS to the West is most interesting and there is material streaming off its Eastern side toward the GRS.
The Polar projection image is of from the previous image and demonstrates very well the flow of material from the aforementioned red spot. The same thing seems to happening with the smaller red spot still further to the West.
It is indeed a great pleasure to process good data, it really does require very little processing.
Hoping for similar conditions tonight.
All polar projections were done with WinJUPOS 8.0.13
Thanks for looking.
Regards Trevor
Imaged Jupiter last night, Sept 17th in very good conditions. The last few weeks we have had strong winds and a lot of raised dust. It rained, lightly most of the day and the rain was very widespread through South Australia. Our weather systems move over S.A. on the way to Broken Hill so the dust in the atmosphere had been well and truly washed out.
The cloud cleared just before Sunset and the high pressure system heading my way was obviously starting to effect the local air mass.
For my imaging session of 3 1/2 hrs the seeing varied from 6 to 8 / 10.
I have posted 3 RGB's, these are among the best images I have taken for this apparition, probably any apparition.
The majority of my processing is done on 150% up sampled images. When I have finished I normally reduce the image size back to original at 640 x 480 pixels. This data was so good that the finished 150% up sampled images looked pretty good in their own right.
The images I have posted have been sized down to 700 x 525 pixels, still larger than original but lose nothing in crispness and detail.
As a matter of interest I have also posted the re sampled 150% versions. As, even in JPG format they were larger than the permissible 200kb I have reduced the quality a little to post them.
Have also posted a Polar projection of the Wesley Impact plus a Polar animation.
http://www.iceinspace.com.au/uploads/20090917JupPolarAnim.gif
The first two images have Europa in transit to the left or East, Europa's shadow transiting just to the West of the CM and Ganymede to the right. There is some very nice detail with Ganymede. There is some amazing detail within the NEB with some very delicate pale blue swirls that I have never imaged so well previously.
The third image has the GRS, the very thin blue line just inside the Western edge in the shape of a large C. There are some extremely well defined white ovals in the South Temperate Zone and the Wesley Impact remnant is very well defined as it rotates into the South Polar region from the West. The red spot following the GRS to the West is most interesting and there is material streaming off its Eastern side toward the GRS.
The Polar projection image is of from the previous image and demonstrates very well the flow of material from the aforementioned red spot. The same thing seems to happening with the smaller red spot still further to the West.
It is indeed a great pleasure to process good data, it really does require very little processing.
Hoping for similar conditions tonight.
All polar projections were done with WinJUPOS 8.0.13
Thanks for looking.
Regards Trevor