Imaged the long lived anticyclone fossil of The Great Storm May 24th in good seeing. It is near the P limb.
Have extensive data in 685nm IR, R and RGB, all of it has been uploaded to PVOL
There are currently several bright spots resolved across the surface of Saturn but the long lived anticyclone clearly resolves as a small oval. Included in the data I have uploaded to PVOL are polar projections in 685nmIR, R and RGB. I have included side by side versions of each polar projection set, one with a grid overlay and one without as the 40 degree latitude line interferes with the southern edge of the anticyclone oval.
The first data for the session resolves several other bright spots, some of which I have labeled, these are well seen in the animations which I also uploaded tp PVOL.
The 685nmIR data resolves several bright spots quite well. The anticyclone is also resolved, faintly but clearly as an oval.
The R channel data faintly resolves some the other bright spots but very well defines the anticyclone oval.
The RGB data faintly resolves several bright spots but also well defines the anticyclone oval.
Have also attached my updated drift chart.
I am very excited to have recovered the anti-cyclone, I have added the data to my spreadsheet and the data point to the drift chart which fits the curve very nicely.
I have now tracked this feature from Feb 3rd 2012 through to May 24th 2017, clearly it requires good seeing and large aperture to resolve it. I have generated an ephemeris for my observatory location going forward and hope to continue to track it through 2017 and plan to capture it nearer the CM for a more accurate measurement.
My RGB image files are too large to post here, even in JPG format, so I have attached a link to one of them in PNG format from the PVOL database.
http://pvol2.ehu.eus/pvolimages/satu...47_rgb_tba.png
http://pvol2.ehu.eus/pvolimages/satu...14_rgb_tba.gif
http://pvol2.ehu.eus/pvolimages/satu...5-09_r_tba.gif
http://pvol2.ehu.eus/pvolimages/satu...85nmIR_tba.gif
Regards
Trevor
