View Single Post
  #1  
Old 20-09-2017, 01:22 PM
Quark's Avatar
Quark (Trevor)
Registered User

Quark is offline
 
Join Date: Apr 2008
Location: Broken Hill NSW Australia
Posts: 4,104
Cassini end of mission.

Have fair data from Sept 15th a couple of hours prior to Cassini loss of signal.
As the time approached for loss of signal the seeing deteriorated significantly but I felt I had to do something, produce something in honour of Cassini.

I decided to go with a 6 minute .ser capture with my 685nm IR-Pass filter, 3 minutes either side of the predicted loss of signal at 11:55:15 UTC.

My data run commenced at 11:52:06 UTC and ended at 11:58:06 UTC.
I cut this file into 6 x 1 minute .ser files and processed each one the best I could, salvaging the better frames to come up with 6 low res images. Have made an animation, albeit rather low res, from this data and attached a link to it on the PVOL data base.

I did not see a flash, the seeing prohibited such an experience but still I have produced this animation. At the start of the animation Cassini was still transmitting data but by the end Cassini would have been no more RIP Cassini.

Just for the sake of absolute historical accuracy I have attached one last image.
Given that the confirmed loss of signal and therefore “End Of Mission” was at 11:55:46 UTC I have created one final image. From my continuous six minutes of data I have cut the data from 11:53:46 UTC through to 11:57:46 and processed it to produce an image with the midpoint of precisely 11:55:46 UT.

Saturn has always been the main focus of my work, looking for SED’s related spots for Cassini RPWS has been a passion for me. Tracking the long lived anti cyclone fossil of The Great Storm for Cassini ISS has been such a challenge. Finding and tracking various other atmospheric features for other researchers has been very satisfying but I feel a loss now that Cassini is no longer out there quite sad really.

http://pvol2.ehu.eus/pvolimages/satu...85nmIR_tba.gif

Regards
Trevor
Attached Thumbnails
Click for full-size image (s2017-09-15_09-12_ir_tba.png)
52.8 KB86 views
Click for full-size image (s2017-09-15_09-19-54_r_tba.png)
54.7 KB73 views
Click for full-size image (s2017-09-15_09-24-36_rgb_tba.png)
167.4 KB105 views
Click for full-size image (s2017-09-15_11-55-46_ir_tba.png)
82.9 KB69 views
Reply With Quote