Enceladus August 11, 2008 encounter, Close-up observations of plume vents |
Enceladus August 11, 2008 encounter, Close-up observations of plume vents |
Aug 3 2008, 06:54 PM
Post
#1
|
|
Member Group: Members Posts: 934 Joined: 4-September 06 From: Boston Member No.: 1102 |
Just 8 days until the next Enceladus encounter.
CICLOPS Rev 80 Looking Ahead will appear here soon. Cassini Enceladus 080EN Mission Description is here now. We get to fly through the south polar jets again. -Floyd [edit] Soon = somtime before encounter -------------------- |
|
|
Aug 10 2008, 09:17 PM
Post
#2
|
|
Senior Member Group: Members Posts: 1465 Joined: 9-February 04 From: Columbus OH USA Member No.: 13 |
When they say x meters/pixel, is that the average resolution in the image? Maximum? Minimum? Particularly if the boresight is off-nadir, there could be appreciable differences within the image.
-------------------- |
|
|
Aug 10 2008, 09:22 PM
Post
#3
|
|
Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
I'd say they quote the resolution at the middle of the image. The NAC FOV is sufficiently small that resolution won't vary much except for very oblique angles.
-------------------- |
|
|
Aug 11 2008, 12:33 AM
Post
#4
|
|
Senior Member Group: Members Posts: 1465 Joined: 9-February 04 From: Columbus OH USA Member No.: 13 |
I'd say they quote the resolution at the middle of the image. The NAC FOV is sufficiently small that resolution won't vary much except for very oblique angles. Take for example the case cited above: "They were taken from a range to target of 319 km, while Cassini was at an altitude of 208 km above Enceladus. The resolution of the NAC was 4 meters/pixel, with a little smear." The camera is specced at 5.99 urad/pixel, so at a range of 319 km, wouldn't the resolution be 319000*5.99e-6 = 1.9 m/pixel (assuming a nadir shot)? As for "the bone-dry maws of some fearful buried beasts that feed on vacuum," Cassini can only tell them "say cheese." -------------------- |
|
|
Lo-Fi Version | Time is now: 25th September 2024 - 05:56 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. |