My Assistant
Site Message
Sol480 Sunset |
 May 11 2005, 05:52 AM
Post
#1
|
|
 Senior Member  Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150  |
  
-------------------- I always think before posting! - Marco -
|
 |
 
|
 |
|
May 22 2005, 09:03 AM
Post
#16
|
|
|
Member Group: Members Posts: 877 Joined: 7-March 05 From: Switzerland Member No.: 186 |
Wonderful, thanks dilo!
I little wonder about that Spirit was able to shoot such a picture without reflection. For comparison sol 476: http://marsrovers.jpl.nasa.gov/gallery/all/spirit_p476.html Is the answer that sun is shaded enough at this lower position to shoot such a great sunset. Or did they found the exact exposure time. -------------------- |
|
|
|
|
May 22 2005, 10:36 PM
Post
#17
|
|
|
Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
QUOTE (Tman @ May 22 2005, 09:03 AM) Wonderful, thanks dilo! I little wonder about that Spirit was able to shoot such a picture without reflection. For comparison sol 476: http://marsrovers.jpl.nasa.gov/gallery/all/spirit_p476.html Is the answer that sun is shaded enough at this lower position to shoot such a great sunset. Or did they found the exact exposure time.  I think answer is mainly related to low Sun position, because is not the first portrait of this kind from Spirit:  Anyway, I made a lot of work in order to stitch the 3 original images in a unique color view; result still not perfect due to different time of shots (about 200sec between each direction) causing different sky shading... also foreground match is poor (but issue do not appear until touching lumosity/contrast/gamma in order to see dark terrain features).  Probably, you or other skilled guys in the forum can do better!  However, I think mosaic appear impressive, so I post it below. Note that here I didn't changed overall luminosity or color mix of original images... Please, enjoy! 
-------------------- I always think before posting! - Marco -
|
|
|
|
 May 23 2005, 06:03 AM
Post
#18
|
|
|
Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
Maenwhile, also Oppy made it's sunset portrait (Sol456):
-------------------- I always think before posting! - Marco -
|
|
|
|
|
May 23 2005, 06:14 AM
Post
#19
|
|
 Member Group: Members Posts: 578 Joined: 5-November 04 From: Denmark Member No.: 107 |
Breathtaking!
 This really makes you think about what an accomplishment this mission is!
-------------------- "I want to make as many people as possible feel like they are part of this adventure. We are going to give everybody a sense of what exploring the surface of another world is really like"
- Steven Squyres |
|
|
|
|
May 23 2005, 10:29 AM
Post
#20
|
|
 Senior Member Group: Members Posts: 2488 Joined: 17-April 05 From: Glasgow, Scotland, UK Member No.: 239 |
Do I see a 'Sun Tower' in that Spirit sunset shot (the first one)? On Earth, we'd be talking about high-altitude ice crystals causing it - I wonder if it's the same on Mars?
-------------------- Remember: Time Flies like the wind - but Fruit Flies like bananas!
|
|
|
|
|
May 23 2005, 10:37 AM
Post
#21
|
|
 Chief Assistant Group: Admin Posts: 1409 Joined: 5-January 05 From: Ierapetra, Greece Member No.: 136 |
Dilo, very impressive still. Nice job!
 I've given it a try with the six frames but the matching is a bitch. Maybe when time allows I'll give it some more patience but I don't feel like it right now and yours, well, I like it a lot!Keep up the good work! Nico -------------------- photographer, space imagery enthusiast, proud father and partner, and geek.
http://500px.com/sacred-photons & |
|
|
|
|
May 23 2005, 11:22 AM
Post
#22
|
|
|
Member Group: Members Posts: 877 Joined: 7-March 05 From: Switzerland Member No.: 186 |
And so far the two L2 and L5 frames are still downsamples (also other of the whole sunset). That still give dilo's work a special rating score!
Probably they find it wonderful too and take it still across as full resolution. -------------------- |
|
|
|
|
May 23 2005, 11:37 AM
Post
#23
|
|
 Junior Member Group: Members Posts: 20 Joined: 27-December 04 Member No.: 131 |
There sunsets are absolutely marvelous!
I've been always waiting for pictures like these! |
|
|
|
|
May 23 2005, 07:35 PM
Post
#24
|
|
|
Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
QUOTE (Bob Shaw @ May 23 2005, 10:29 AM) Do I see a 'Sun Tower' in that Spirit sunset shot (the first one)? On Earth, we'd be talking about high-altitude ice crystals causing it - I wonder if it's the same on Mars? I think is a Sun tower, based also on bluish color... not sure if crystals are made of water ice! On the other hand, also in the official MER site they tell how "twilight images are occasionally acquired by the science team to determine how high into the atmosphere the martian dust extends, and to look for dust or ice clouds": http://marsrovers.jpl.nasa.gov/gallery/pre.../20050511a.html Anyway, thanks to all people who kindly appreciated these images... I absolutely agree with dot.dk about MER fabulous accomplishment... sometimes, I really think a single image could pay an entire space mission! (I know is an exageration, but surely you can understand what I mean!  )
-------------------- I always think before posting! - Marco -
|
|
|
|
|
May 23 2005, 11:06 PM
Post
#25
|
|
|
Member Group: Members Posts: 194 Joined: 8-February 04 Member No.: 10 |
[quote=dilo,May 23 2005, 07:35 PM]
[quote=Bob Shaw,May 23 2005, 10:29 AM]Do I see a 'Sun Tower' in that Spirit sunset shot (the first one)? Not if this is the same image as seen at: http://www.donaldedavis.com/2004%20new/newer/MER2SSET.jpg Which I created using frames from this sequence: http://qt.exploratorium.edu/mars/opportuni...00P2679L5M1.JPG A good RGB view was obtained, and after some Photoshop manipulation to regester the sun images I 'mirrored' the entire image and hand removed the 'missing' central strip. I stopped just short of 'perfect' match in this work, as one has to move on sometime in non paying work. There is no 'sun tower' deliberately shown in the image, and I guess i'll have to revise the work sometime more carefully. There was one sunset sequence which briefly fooled me into thinking a nice halo had been imaged, but it was only a detection of an out of focus incompletely positioned filter wheel! Don |
|
|
|
|
May 23 2005, 11:30 PM
Post
#26
|
|
 Senior Member Group: Members Posts: 1281 Joined: 18-December 04 From: San Diego, CA Member No.: 124 |
Somehow the phrase "Embarrassment of Riches" keeps entering my mind in this thread...
Absolutely wonderful work from everyone! -------------------- Lyford Rome
"Zis is not nuts, zis is super-nuts!" Mathematician Richard Courant on viewing an Orion test |
|
|
|
|
Jun 5 2005, 03:02 PM
Post
#27
|
||
 Junior Member Group: Members Posts: 59 Joined: 13-February 05 From: Germany - NRW Member No.: 168 |
So, here is my version of that beautiful Sol 489 sunset
Attached thumbnail(s)
|
|
|
|
|
|
|
Jun 5 2005, 08:27 PM
Post
#28
|
|
|
Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
QUOTE (Deeman @ Jun 5 2005, 03:02 PM) So, here is my version of that beautiful Sol 489 sunset Interesting results, Deeman! The sky color matching between different images is very good and the dark foreground terrain details are well visible by reducing contrast and increasing luminosity: a result clearly better than mine!  I notice also that your overall sky hue is a little bit yellower than mine, a color probably more realistic.However, I cannot explain the bright halo around the Sun, some kind of asymmetric "flou" effect... 
-------------------- I always think before posting! - Marco -
|
|
|
|
|
Jun 6 2005, 04:01 PM
Post
#29
|
|
|
Member Group: Members Posts: 877 Joined: 7-March 05 From: Switzerland Member No.: 186 |
QUOTE (dilo @ Jun 5 2005, 10:27 PM) However, I cannot explain the bright halo around the Sun, some kind of asymmetric "flou" effect... I've got it! http://www.greuti.ch/spirit/Spirit_Sol_489_Sunnnset.jpg -------------------- |
|
|
|
|
Jun 6 2005, 04:16 PM
Post
#30
|
|
|
Chief Assistant Group: Admin Posts: 1409 Joined: 5-January 05 From: Ierapetra, Greece Member No.: 136 |
Very NICE!
I will have a look at it each time I go to bed from now on.The effect is not overdone, I like that.  Nico -------------------- photographer, space imagery enthusiast, proud father and partner, and geek.
http://500px.com/sacred-photons & |
|
|
|
 |
|
Lo-Fi Version | Time is now: 16th December 2024 - 12:31 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. |
|
