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Kecktastic
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Reged: 01/16/10

Loc: Broken Hill NSW Australia
Saturn Feb 15th, spot, hex, vortex.
      #5682843 - 02/16/13 05:40 AM Attachment (71 downloads)

Hi All,

Imaged Saturn this morning in reasonable seeing. Of interest in my 742nm IR data, is what I believe to be, the vortex within the Hexagon at the North pole. It is in all three of my IR data sets.

Each IR image is made from two consecutive 3 min IR captures derotated and combined in WinJUPOS, the 1 min between them means each IR image here is captured over a 7 min period. There is just over 1 hour between the mid point of my 1st & 3rd IR images and while the vortex is most prominent in the 1st image, it is also visible in the other two as well.

Also of interest in both my RGB & 742nm IR data is a quite prominent dark spot. I measure its position to be at L3 333.2 Lat +46.9.
There are also some diffuse bright spots in the NEB, the dark spot comes up very well in my animations of both IR & RGB data.

Interestingly the dark spot, which is also visible in my IR & RGB polar projection maps, lines up very nicely with one the the hexagons vertices in the 1st IR polar map at approx 333 Sys III. The rotation of the spot in Sys II makes for a nice comparison with the hexagons Sys III rotation when considering a comparison with these movements over the approx 80 minutes covered by this data.

Thanks for looking.

Regards
Trevor


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Kecktastic
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Reged: 01/16/10

Loc: Broken Hill NSW Australia
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: Kecktastic]
      #5682848 - 02/16/13 05:43 AM Attachment (35 downloads)

742nm IR map

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Kecktastic
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Reged: 01/16/10

Loc: Broken Hill NSW Australia
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: Kecktastic]
      #5682849 - 02/16/13 05:44 AM Attachment (35 downloads)

RGB

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Kecktastic
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Reged: 01/16/10

Loc: Broken Hill NSW Australia
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: Kecktastic]
      #5682851 - 02/16/13 05:44 AM Attachment (25 downloads)

RGB map

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Kecktastic
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Reged: 01/16/10

Loc: Broken Hill NSW Australia
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: Kecktastic]
      #5682853 - 02/16/13 05:46 AM Attachment (28 downloads)

742nm IR animation

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Kecktastic
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Reged: 01/16/10

Loc: Broken Hill NSW Australia
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: Kecktastic]
      #5682855 - 02/16/13 05:47 AM Attachment (19 downloads)

742nm IR map animation

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Kecktastic
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Reged: 01/16/10

Loc: Broken Hill NSW Australia
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: Kecktastic]
      #5682856 - 02/16/13 05:48 AM Attachment (27 downloads)

RGB animation

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Kecktastic
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Reged: 01/16/10

Loc: Broken Hill NSW Australia
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: Kecktastic]
      #5682857 - 02/16/13 05:48 AM Attachment (31 downloads)

RGB map animation

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Mitchell Duke
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Reged: 04/22/08

Loc: Georgia
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: Kecktastic]
      #5682872 - 02/16/13 06:27 AM

Wow thats an amazing animation of the pole! The vortex is resolved very nicely.

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Space Cowboy
scholastic sledgehammer


Reged: 05/30/10

Loc: Cheshire, UK
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: Mitchell Duke]
      #5682885 - 02/16/13 07:04 AM

Great work Trevor! Spectacular pole animation!

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mitovka
professor emeritus


Reged: 06/08/10

Loc: Slovakia, CE
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: Space Cowboy]
      #5682897 - 02/16/13 07:29 AM

Amazing job Trevor.

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Timthelder
super member


Reged: 06/12/12

Loc: Bowling Green KY
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: mitovka]
      #5682998 - 02/16/13 09:10 AM

Some absolutely fantastic work Trevor!

The dark spot is jumping right out there. I wonder if it could actually be a left over from a missed strike? (although I don't know how it would be missed as many eyes as there are on Saturn ATM.)

It will be interesting to see how image details develope as Saturn nears opposition.

Cheers, Tim


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Sunspot
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Reged: 03/15/05

Loc: Surprise, AZ
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: Kecktastic]
      #5683007 - 02/16/13 09:14 AM

Trevor,

Outstanding set of images!

Paul


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ToxMan
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Reged: 01/23/11

Loc: Tucson, Arizona, USA
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: Sunspot]
      #5683024 - 02/16/13 09:22 AM

Beautiful...lots of wonderful features...great data!

Thanks for sharing, Trevor.


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lcd1080
scholastic sledgehammer


Reged: 06/03/10

Loc: Maryland, USA
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: ToxMan]
      #5683203 - 02/16/13 10:52 AM

Trevor that vortex is spot on!

Pete


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sfugardi
Carpal Tunnel


Reged: 09/30/06

Loc: CT
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: lcd1080]
      #5683580 - 02/16/13 01:58 PM

Trevor, top shelf resolution! Impressive set, every image. Congradultations and thanks for sharing your excellent work.

Regards,
Steve


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ZielkeNightsky
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Reged: 10/01/06

Loc: Denmark
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: sfugardi]
      #5683645 - 02/16/13 02:31 PM

Trevor, another fantastic set of images. The IR nicely show the vortex and the hexagon shape is pretty well defined.

The spot is also well defined and shows really nicly in the animations.

Another beautiful set of good data.

Edited by ZielkeNightsky (02/17/13 06:26 AM)


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Az Frank
Carpal Tunnel


Reged: 10/18/08

Loc: Tucson Arizona
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: ZielkeNightsky]
      #5683904 - 02/16/13 05:18 PM

Congrats Trevor! Amazing images and animation capturing the hexagon as well as the vortex. I knew the best was yet to come and probably more yet!

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Freddy WILLEMS
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Reged: 11/13/05

Loc: Hawaii, Honolulu
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: Az Frank]
      #5684148 - 02/16/13 07:54 PM

Amazing nice processed Trevor.

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Tassydevil
professor emeritus


Reged: 08/17/11

Loc: Tasmania, Australia
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: Freddy WILLEMS]
      #5684444 - 02/16/13 11:38 PM

Great work Trevor.

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Kecktastic
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Reged: 01/16/10

Loc: Broken Hill NSW Australia
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: Mitchell Duke]
      #5684644 - 02/17/13 05:13 AM

Thanks Mitch but the most interesting thing I nearly missed. Only picked it up after I uploaded my data. Have a look at the first IR image, there is a tiny but quite bright spot close to the CM but far South, on the edge of the polar region. It is easily seen in the IR animation, have measured it to be at L3 318.9 Lat +67.4, it can be seen in the IR maps when you know where to look and is well seen in the IR map animation. In all the years I have been imaging Saturn for Cassini RPWS I have not seen a feature like that so close to the polar region.

Thanks Stuart, certainly a lot happening in the animations.

Thanks Michal, appreciate your comment.

Thanks Tim, I believe the dark spot is a long lived feature, reckon I have imaged it previously. There has been conjecture that SED's associated with The Great Storm may have produced some carbon and that it could possibly in relatively significant volume, I guess more analysis with the suite of instruments on Cassini may help determine that.

Thanks Paul M. and congratulation also on your latest Saturn images.

Thanks Paul for you kind words.

Thanks Pete, toward the end of this imaging session Saturn had exceeded 70 degrees alt which obviously helps considerably.

Thanks so much Steve, although I still have not had, what I would call good seeing, I was quite pleased with this result.

Thanks Lars, when I was walking down to my observatory the stars all looked quite steady and I had high expectations, the reality when looking at the live feed to my computer screen was a little different, very fast seeing but it still produced an acceptable result.

Thanks Frank, large aperture, quality optics, high alt and reasonable seeing means good results. When I do get some good seeing I have very high expectations of the data it will produce.

Thanks Freddy, hope your relocation is going well.

Thanks Graeme, reckon Saturn is so high now you should get a great look at it even down in Tassie.


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Space Cowboy
scholastic sledgehammer


Reged: 05/30/10

Loc: Cheshire, UK
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: Kecktastic]
      #5684986 - 02/17/13 11:16 AM

Trevor how did you do the north poler animation so that the planet rotates but the "segment" stays static? I can only animate the segment increasing in size with the planet static.

Edited by Space Cowboy (02/17/13 12:00 PM)


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Rankinstudio
Carpal Tunnel
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Reged: 04/05/08

Loc: Southern UT
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: Space Cowboy]
      #5685000 - 02/17/13 11:25 AM

Beautiful set of images. I would say you nailed the polar hexagon and the vortex. Amazing.

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Kecktastic
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Reged: 01/16/10

Loc: Broken Hill NSW Australia
Re: Saturn Feb 15th, spot, hex, vortex. new [Re: Space Cowboy]
      #5686404 - 02/18/13 04:02 AM

Hi Stuart, have sent off a PM, probably a bit too extensive to add here, it ran to over a page on my word processor, hope it answers your question.

Thanks David, I only used 40% of the data for each channel but reckon it came up ok.


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