My Assistant
Titan's Haze Layers |
May 12 2009, 01:39 AM
Post
#1
|
||
![]() Senior Member ![]() ![]() ![]() ![]() Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
Here is an animated GIF of the May 5th 2009 star occultation sequence from the CL1 VIO image set:
(click to animate) For this stack, the limb of Titan was used as the reference for alignment. The contrast has also been balanced between the images of the sequence. -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
|
|
|
|
||
![]() |
May 17 2009, 10:48 PM
Post
#2
|
||
![]() Senior Member ![]() ![]() ![]() ![]() Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
To calculate the distance from the CB2 CL2 images to the inner edge of the detached haze layer was kinda tricky.
The inner edge of the detached haze layer is not visible in the CB2 CL2 image sequence. (The outer edge is sorta visible by the steep falloff in pixel brightness). To get the correct measurements, I took the W00056248 CL1 VIO image and coordinated to the W00056247 image in the CB2 CL2 image set. (By my calculations, there should be less than a 1 pixel difference in the Archenar image.) I then overlaid the two star images and made the limb sections parallel. (Titan's limb is "inflated" in CL1 VIO filtered images). A mask was added to not interfere with the lower layer measurements so that the CL1 VIO detached haze layer is now visible in the CB2 CL image set. The measurements were then made from the inner edge of the CL1 VIO detached haze layer. (And they match up nicely!) -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
|
|
|
|
||
Juramike Titan's Haze Layers May 12 2009, 01:39 AM
Jason W Barnes QUOTE (Juramike @ May 11 2009, 06:39 PM) ... May 12 2009, 01:42 AM
volcanopele That's Alpha Eridani, a 0.45 mag blue-giant st... May 12 2009, 01:57 AM
Juramike Layer stack aligned:
(Not sure of the reason fo... May 12 2009, 02:35 AM
Juramike Control points added to contrast balance the image... May 12 2009, 02:44 AM
Juramike For a spatial reference point, I'll use the ou... May 12 2009, 04:52 AM
remcook The detached haze layer is at 520 km
link (hope it... May 12 2009, 07:11 AM
remcook The curvature of the path might be due to refracti... May 12 2009, 07:19 AM
Juramike Been doin' some readin (Thanks for the pointer... May 14 2009, 03:58 AM
Juramike Corrected graphic with values assuming an inner ed... May 14 2009, 11:20 AM
Jason W Barnes QUOTE (Juramike @ May 14 2009, 04:20 AM) ... May 14 2009, 04:44 PM
Juramike Here is the sequence of leveled and aligned (shift... May 15 2009, 03:03 AM
Juramike For each CL1-VIO subtracted image, I used the Phot... May 15 2009, 03:52 AM
ugordan Mike, if you're doing what I think you are, yo... May 15 2009, 08:38 AM
Juramike I was worried about that:
I set 4 control points ... May 15 2009, 02:03 PM
Juramike Here is a graphic showing the placement of the con... May 16 2009, 01:26 AM
Juramike Here is an animated GIF of the rotated and aligne... May 16 2009, 04:23 AM
Juramike Cool! I think there is a bonus occultation by... May 16 2009, 05:25 AM
Juramike Reworked the CL1-VIO filtered image. Here is a co... May 17 2009, 08:27 PM
Juramike Corrected absolute altitudes of the CL1-VIO filter... May 17 2009, 08:31 PM
Juramike Stacked images of the May 5th occultation of Arche... May 17 2009, 08:41 PM
Juramike Here are the control points for the CB2 CL2 calibr... May 17 2009, 09:03 PM
Juramike Here is a coordinated and rotated image showing th... May 17 2009, 09:59 PM
Juramike Here is the graphed relative transmission data of ... May 18 2009, 01:57 AM
Juramike Here is the same graph as above, but plotted on a ... May 18 2009, 03:30 AM
Juramike Error analysis of my derived occultation data.
A... May 19 2009, 11:56 AM
Juramike Image showing really really subtle dark details of... May 26 2009, 04:24 AM![]() ![]() |
|
Lo-Fi Version | Time is now: 17th December 2024 - 01:34 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. |
|