Voyager 1 Saturn movies |
Voyager 1 Saturn movies |
May 17 2022, 03:16 PM
Post
#1
|
|
Newbie Group: Members Posts: 17 Joined: 23-July 15 From: Austin, TX Member No.: 7615 |
I've been making some more movies -
Dione v0.60 - https://i.imgur.com/7ARNCEd.mp4 - need to adjust brightness on some. I don't have the ability to center Saturn yet, so will make do with slideshows for now - some of the ring shots are really nice - https://i.imgur.com/1oLem3f.mp4 This doesn't compete with Cassini, of course, but for me, it captures the excitement of seeing these moons and images for the first time. I'm aiming to have a semi-complete movie done by June 1, with j1 s1 u2 n2. Will finish Voyager 2 after that. Then someday, will make a color movie of Saturn - there are plenty of pics for that. |
|
|
May 17 2022, 05:54 PM
Post
#2
|
|
Member Group: Members Posts: 253 Joined: 14-January 22 Member No.: 9140 |
That's fantastic, Owl! Dione was one of the wonderful sights of the Voyager 1 Saturn flyby, and those linear features were a mystery until Cassini. Seeing those individual frames brings back thoughts of the original smudgy color images.
The ring images are beautiful and shocked the world. This is a reminder that Voyager 1 only gave us a one-way look, so unlike the endless views from every angle that Cassini provided. Thanks so much! |
|
|
May 17 2022, 08:00 PM
Post
#3
|
|
Newbie Group: Members Posts: 17 Joined: 23-July 15 From: Austin, TX Member No.: 7615 |
Thanks! I still haven't really delved into Cassini's images so don't know/remember what the full moon looks like.
Here's Iapetus - will need to do some cropping/zooming on this one - such an interesting moon, just a bit too far away from the camera... Saturn_Voyager1_Iapetus_Narrow.mp4 ( 313.76K ) Number of downloads: 409 There are about 15,000 images of Saturn and the rings from Voyager 1 alone, so picking out the 'best' ones is challenging in itself! I have around 3 minutes of footage of this flyby - will post that to YouTube soon.
Attached File(s)
|
|
|
May 20 2022, 09:23 AM
Post
#4
|
|||
Newbie Group: Members Posts: 17 Joined: 23-July 15 From: Austin, TX Member No.: 7615 |
Okay, here's the complete Voyager 1 flyby of Saturn - it's 4 mins. Be sure to click the gear and set the quality to 720p...
https://www.youtube.com/watch?v=xC8yt4WRT_A The slideshow segments don't show up at full-resolution for me, especially of the rings - I guess it's an issue with video compression and download speeds. The mp4 video I uploaded is 24MB. The video description has timestamps for the different segments and width of the moons relative to Earth's - Contents: 00:00:00 Approach 00:00:21 Storm in south 00:00:31 Titan (large moon with thick atmosphere) (148%) 00:00:51 Rings 00:01:59 Tethys (a death star moon) (30%) 00:02:09 Mimas (another death star moon) (12%) 00:02:22 Dione (moon with spider-like cracks) (32%) 00:02:42 Iapetus (black and white moon) (42%) 00:02:52 Rhea (another moon with cracks) (44%) 00:03:23 Retreat The highlights to me working on this project were seeing the small storms on Saturn, the textures in the rings as they rotate, the black and white moon Iapetus, the layered atmosphere of Titan (unless that's motion blur?), the cracked moons of Rhea and Dione, and some of the amazing Saturn+ring shots. This is version 0.60 - later versions will have colors movies of Saturn and Titan, crops, etc. Also will include the trajectory plots - generated with SPICE and the planet/spacecraft positions - And here's that shot of Titan (C3492126) - is this just motion blur? Thanks to Bjorn Jonsson for img2png, which is what converts the Voyager img files to pngs. The rest is done with https://github.com/bburns/PyVoyager. The next step will be to work on a compilation of the j1s1u2n2 flybys - aiming for June 1 release. Then make a complete movie with j2s2. |
||
|
|||
May 21 2022, 05:00 AM
Post
#5
|
|
Member Group: Members Posts: 253 Joined: 14-January 22 Member No.: 9140 |
A wonderful job of compilation!
The image of Titan is not, I think, demonstrating motion blur. Those are layers of haze with different characteristics, and the upper ones are blue in color composites. Cassini provided a lot more information about the nature of the layers, which vary over time and latitude. https://www.nasa.gov/mission_pages/voyager/...2238_13172.html |
|
|
May 21 2022, 07:21 AM
Post
#6
|
|
Newbie Group: Members Posts: 17 Joined: 23-July 15 From: Austin, TX Member No.: 7615 |
Thank you!
Yeah I googled that image number but came up empty - I figured it would have been referenced in a NASA page somewhere? Work has picked up and I probably won't be able to work on the compilations for a while. I'm not very good at multitasking - and this project is really absorbing! Hopefully I'll be able to get back to it later this summer though. |
|
|
May 21 2022, 08:02 PM
Post
#7
|
|
Member Group: Members Posts: 253 Joined: 14-January 22 Member No.: 9140 |
This release is a closer match to the image that you posted. Similar, but not the same. These must have been taken very close in time, and I guess the one that you posted utilized the violet filter.
https://photojournal.jpl.nasa.gov/catalog/PIA01533 I'm not sure why there are releases in color that are so similar to – but don't include – your image. Maybe the coverage near closest approach did not permit color composites for all the violet images. |
|
|
May 21 2022, 09:24 PM
Post
#8
|
|
Newbie Group: Members Posts: 17 Joined: 23-July 15 From: Austin, TX Member No.: 7615 |
Yeah, there it is!
The image sequence looks like this - C3492035,6113,Saturn,Voyager1,Titan,1980-11-12T05:01:22,Wide,Violet,IRIS integration in TITAN's atmosphere C3492041,6113,Saturn,Voyager1,Titan,1980-11-12T05:06:10,Wide,Orange,IRIS integration in TITAN's atmosphere C3492047,6113,Saturn,Voyager1,Titan,1980-11-12T05:10:58,Wide,Clear,IRIS integration in TITAN's atmosphere C3492053,6113,Saturn,Voyager1,Titan,1980-11-12T05:15:46,Wide,Clear,IRIS integration in TITAN's atmosphere C3492126,6113,Saturn,Voyager1,Titan,1980-11-12T05:42:10,Wide,Violet,IRIS integration in TITAN's atmosphere <--- C3492512,6113,Saturn,Voyager1,Dark,1980-11-12T08:42:58,Narrow,Clear,Dark current calibration C3492515,6113,Saturn,Voyager1,Dark,1980-11-12T08:45:22,Wide,Clear,Dark current calibration C3492526,6113,Saturn,Voyager1,Dione,1980-11-12T08:54:10,Narrow,Clear,Optical navigation I guess that was the last close approach picture, and maybe they got lucky catching the edge of the atmosphere. And it was still a good ways to Saturn, hence the 3 hr gap? Although, the dataset I used is the PDS, which is a subset of the full EDR data. And I think they have different file numbering schemes. I might eventually switch to the EDR data. |
|
|
May 21 2022, 11:48 PM
Post
#9
|
|
Member Group: Members Posts: 716 Joined: 3-December 04 From: Boulder, Colorado, USA Member No.: 117 |
This release is a closer match to the image that you posted. Similar, but not the same. These must have been taken very close in time, and I guess the one that you posted utilized the violet filter. https://photojournal.jpl.nasa.gov/catalog/PIA01533 I'm not sure why there are releases in color that are so similar to – but don't include – your image. Maybe the coverage near closest approach did not permit color composites for all the violet images. I think the color image is the same one- they applied a pseudocolor scheme to the original violet image to mimic the colors seen in lower resolution images (which always bugged me a bit). John |
|
|
May 25 2022, 01:58 AM
Post
#10
|
|
Member Group: Members Posts: 253 Joined: 14-January 22 Member No.: 9140 |
Thanks, John. That seems right. It probably yields a reasonably realistic result, but, yes, cheating a bit.
|
|
|
Lo-Fi Version | Time is now: 20th October 2024 - 12:14 AM |
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member. |