Fun With The Pds, Lots of images to play with! |
Unmanned Spaceflight.com > Outer Solar System > Saturn > Cassini Huygens > Cassini's ongoing mission and raw images  |
Fun With The Pds, Lots of images to play with! |
 Aug 7 2005, 09:19 PM
Post
#1
|
|
 Interplanetary Dumpster Diver  Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33  |
I can't wait until they start releasing the PDS images for the Cassini tour. That is part of the reason I have been working with the Voyager stuff so much lately...It is hard to get motivated to do much with the "RAW" jpegs being released, since you know you will have better stuff to work with in a year. From the approach sequence, I found this nice little image of Iapetus. The original is only 98 pixels across, but super-resolution processing improved it a lot. I can't wait...
-------------------- |
 |
 
|
|
Aug 7 2005, 10:11 PM
Post
#2
|
|
 Lord Of The Uranian Rings Group: Members Posts: 798 Joined: 18-July 05 From: Plymouth, UK Member No.: 437 |
Excellent work Ted! I reckon JPL should give you early access to the PDS images, especially if you can come up with results like this.
 Ian. -------------------- |
|
|
|
|
Aug 7 2005, 11:27 PM
Post
#3
|
|
|
Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
QUOTE (Ian R @ Aug 7 2005, 10:11 PM) Excellent work Ted! I reckon JPL should give you early access to the PDS images, especially if you can come up with results like this. Ian.  I wish  I have had fun with this super-res stuff. But as I am sure you have realized, you can't do to much with these Raw JPEGs....Here is Dione, at the same scale as the Iapetus image, taken from the best data currently on the PDS....I look forward to future releases! 
-------------------- |
|
|
|
|
Aug 8 2005, 03:22 AM
Post
#4
|
|
|
Senior Member Group: Members Posts: 1276 Joined: 25-November 04 Member No.: 114 |
I'll be looking forward to your work!
|
|
|
|
|
Aug 8 2005, 05:37 AM
Post
#5
|
|
|
Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
Thanks. Again, that is why I have focused on working with Voyager images lately. I am trying to work with the best views that I can improve upon, such as the OGB color Enceladus mosaic I like so much.
 I hope to make a page eventually with the best of these, as well as Cassini views once I have full quality data to work with (super-resolution isn't much fun if you know that even your super-res products are poorer than the original data - it becomes fun when you are pushing the data to the max). I do plan to do more with Voyager views of the Urainan satellites and Triton. But Voyager images are so hard to work with....oh for the Cassini releases.... -------------------- |
|
|
|
|
Aug 8 2005, 05:24 PM
Post
#6
|
|
|
Rover Driver Group: Members Posts: 1015 Joined: 4-March 04 Member No.: 47 |
you seem a bit anxious Ted. like you are waiting for something
|
|
|
|
|
Aug 8 2005, 05:29 PM
Post
#7
|
|
 Senior Member Group: Moderator Posts: 3232 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
The next PDS delivery (with data from October-December 2004) will be delivered on October 1. This would include data from Ta and Tb, the December 2004 Dione non-targeted encounter, and the Iapetus encounter.
-------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
|
|
|
|
Aug 8 2005, 06:07 PM
Post
#8
|
|
|
Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
QUOTE (volcanopele @ Aug 8 2005, 05:29 PM) The next PDS delivery (with data from October-December 2004) will be delivered on October 1. This would include data from Ta and Tb, the December 2004 Dione non-targeted encounter, and the Iapetus encounter. Darn it...right in the middle of the semester 
-------------------- |
|
|
|
|
Aug 9 2005, 12:10 AM
Post
#9
|
|
 Member Group: Members Posts: 378 Joined: 21-April 05 From: Portugal Member No.: 347 |
Tedstryk:
Do you have some way to calibrate the Voyager OGB filter images in absolute terms? This is, do you compensate for different exposure times and filter/camera response ? I've tried this and got some very strange results (purple Triton, green enceladus). Perhaps I just got my math all wrong :-( With Cassini we now have good reference images for Jupiter, Saturn and respective satellites. But for Uranus and Neptune there's still only Voyager! -------------------- _______________________
www.astrosurf.com/nunes |
|
|
|
|
Aug 9 2005, 12:28 AM
Post
#10
|
|
|
Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
QUOTE (4th rock from the sun @ Aug 9 2005, 12:10 AM) Tedstryk: Do you have some way to calibrate the Voyager OGB filter images in absolute terms? This is, do you compensate for different exposure times and filter/camera response ? I've tried this and got some very strange results (purple Triton, green enceladus). Perhaps I just got my math all wrong :-( With Cassini we now have good reference images for Jupiter, Saturn and respective satellites. But for Uranus and Neptune there's still only Voyager! This is what I use to some extent. http://pds-rings.seti.org/voyager/hardware...st_cat_wa1.html http://pds-rings.seti.org/voyager/hardware...st_cat_wa2.html http://pds-rings.seti.org/voyager/hardware...st_cat_na1.html http://pds-rings.seti.org/voyager/hardware...st_cat_na2.html However, I find results are inconsistent...It seems that there is some sort of reciprocity breakdown in longer exposure images. I may be imagining this though. -------------------- |
|
|
|
|
Aug 10 2005, 01:02 PM
Post
#11
|
|
|
Member Group: Members Posts: 378 Joined: 21-April 05 From: Portugal Member No.: 347 |
No, you seem to be right...
Longer exposures have LESS data than they should so correcting for exposure time, filter and sensor sensivity gives very strange results. -------------------- _______________________
www.astrosurf.com/nunes |
|
|
|
|
Aug 10 2005, 01:11 PM
Post
#12
|
|
 Member Group: Members Posts: 345 Joined: 2-May 05 Member No.: 372 |
QUOTE (4th rock from the sun @ Aug 10 2005, 09:02 AM) No, you seem to be right... Longer exposures have LESS data than they should so correcting for exposure time, filter and sensor sensivity gives very strange results. Damn lousy vidicons! 
|
|
|
|
|
Aug 10 2005, 11:31 PM
Post
#13
|
|
|
Member Group: Members Posts: 378 Joined: 21-April 05 From: Portugal Member No.: 347 |
I'm searching the net for some sort of general vidicon response vs exposure time graph but no luck so far ... -------------------- _______________________
www.astrosurf.com/nunes |
|
|
|
|
Aug 11 2005, 02:14 AM
Post
#14
|
|
|
Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
QUOTE (4th rock from the sun @ Aug 10 2005, 11:31 PM) I'm searching the net for some sort of general vidicon response vs exposure time graph but no luck so far ... I have looked, but I have had no luck either. I have found info for film and CCDs, but not vidicon. -------------------- |
|
|
|
|
Aug 11 2005, 01:58 PM
Post
#15
|
|
|
Member Group: Members Posts: 378 Joined: 21-April 05 From: Portugal Member No.: 347 |
Yes, no information other than it has a "logarithmic response".
-------------------- _______________________
www.astrosurf.com/nunes |
|
|
|
|
|
Lo-Fi Version | Time is now: 24th April 2024 - 03:49 PM |
|
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. |
|
