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View Full Version here: : Saturn dark oval May 8th

Quark
09-05-2013, 09:25 PM
Hi All,

Imaged Saturn last night, targeting the dark oval in the NNTrZ.
Have 2 R, 2 RGB & 1 742nm IR data sets over a session of 90 minutes. The seeing was fair.



The dark oval is clearly visible in all data sets. In the first R & RGB images the bright spot that has been leading the dark oval in the NNTrZ is also visible but the distance between them is stretching out noticeably. I suspect the position of the bright spot, being a little further North, is experiencing the stronger winds in the jetstream of this region. I also note a bright spot in the NEB, just leading the dark oval.



Have also attached animations of the R & RGB data which show the movement of the dark oval quite well. Have also attached polar projections of all data.

Thanks for looking

Regards
Trevor
SkyViking
09-05-2013, 09:53 PM
Fabulous work Trevor, and that polar projection is awesome!
DavidU
09-05-2013, 09:59 PM
A superb set of data Trev:thumbsup::thumbsup:
U.K.Cowboy
10-05-2013, 01:25 AM
Another Saturn feast! :thumbsup:
samilag
10-05-2013, 05:21 AM
Fantastic views !!!! Trevor

Optimum animation with a clear movement of dark oval

A work well done with right colors and details.


Giuseppe
Dennis
10-05-2013, 06:22 AM
Really nice work Trevor. The animations are the icing on the cake for me, watching the dark oval’s progression. Stunning work!

Cheers

Dennis
Quark
10-05-2013, 05:59 PM
Thanks to all for your kind words. I didn't really have any expectations for what I would get this session. My drift chart for the dark oval had it well placed but of the 3 weather models I look at, two were predicting fair seeing while the other was predicting a worse case scenario. In the end I was glad to snag just a couple of data sets that resolved the dark oval.

Regards
Trevor
Shiraz
12-05-2013, 12:40 PM
this is excellent data Trevor. regards Ray
asimov
12-05-2013, 08:27 PM
Nice work mate. Took me awhile to spot this dark oval you're speaking of.
Quark
12-05-2013, 10:50 PM
Thanks Ray & Asi, FYI have attached a link that covers the subject of this dark oval very well and includes a hi-res Cassini image of it taken early this year.

http://planetaryweather.blogspot.com.au/2013_04_01_archive.html