Sol480 Sunset - Unmanned Spaceflight.com

Sol480 Sunset

dilo View Member Profile	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 -

Replies (30 - 44)

Deeman View Member Profile	Jun 6 2005, 05:28 PM Post #31
Junior Member Group: Members Posts: 59 Joined: 13-February 05 From: Germany - NRW Member No.: 168	QUOTE (dilo @ Jun 5 2005, 08:27 PM) 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... Yep, did a little lens flare too ! Couldn`t resist And i did the asymmetric to the effect to give the whole a more realistic look. hopefully Greets, Dirk

Tman View Member Profile	Jun 6 2005, 06:31 PM Post #32
Member Group: Members Posts: 877 Joined: 7-March 05 From: Switzerland Member No.: 186	Hi Dirk, I coudn't resist too. At which yours seems to be more realistic, since there is more dust in the air on Mars - like on Earth when sun go down as a red ball. Apropos, how about red sun ball when Mars sunset? -------------------- Peter MER filename decoding into local true solar time - MSL clock and filename decoding

Tman View Member Profile	Jun 10 2005, 08:04 PM Post #33
Member Group: Members Posts: 877 Joined: 7-March 05 From: Switzerland Member No.: 186	I'm still waiting for all full resolution pics from this sunset. They must still be over there in Spirit's memory!? Should we send an E-mail with our sunsets to Steve or someone else, including a request for the good stuff? Someone who can write it in perfect English (it isn't rather me ). -------------------- Peter MER filename decoding into local true solar time - MSL clock and filename decoding

djellison View Member Profile	Jun 10 2005, 08:26 PM Post #34
Founder Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1	Its more than likely that they just took down-sampled images anyway. Doug

Tman View Member Profile	Jun 10 2005, 09:16 PM Post #35
Member Group: Members Posts: 877 Joined: 7-March 05 From: Switzerland Member No.: 186	Isn't it that Pancam takes automatically full res. pics when recording? Or has that to do how far they command to read out the 1024x1024 CCDs for storage? So not read out all pixel? -------------------- Peter MER filename decoding into local true solar time - MSL clock and filename decoding

dot.dk View Member Profile	Jun 10 2005, 09:30 PM Post #36
Member Group: Members Posts: 578 Joined: 5-November 04 From: Denmark Member No.: 107	http://photojournal.jpl.nasa.gov/catalog/PIA07997 -------------------- "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

slinted View Member Profile	Jun 10 2005, 09:42 PM Post #37
Member Group: Admin Posts: 468 Joined: 11-February 04 From: USA Member No.: 21	Subframing or downsampling is part of the command they send when the picture is taken, so I think it is only recorded on the rover as subframe or downsampled, the original full res image isn't stored. I can't think of a time when we saw a subframe or downsample image that was replaced later by a full frame version of itself. I could be wrong about this...

djellison View Member Profile	Jun 10 2005, 09:44 PM Post #38
Founder Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1	QUOTE (Tman @ Jun 10 2005, 09:16 PM) Isn't it that Pancam takes automatically full res. pics when recording? Or has that to do how far they command to read out the 1024x1024 CCDs for storage? So not read out all pixel? They will always 'take' 1024 x 1024, but they can read out a 2x2 binned or 4x4 binned image - or downsize or a sub-sample after the image was taken Doug

Tman View Member Profile	Jun 10 2005, 10:36 PM Post #39
Member Group: Members Posts: 877 Joined: 7-March 05 From: Switzerland Member No.: 186	So I hope I'm not too illegal http://www.greuti.ch/spirit/sol489_JPLsunset.jpg (Sorry, but I'm hooked about it) -------------------- Peter MER filename decoding into local true solar time - MSL clock and filename decoding

edstrick

Jun 11 2005, 12:49 AM

Post #40

Senior Member

Group: Members
Posts: 1870
Joined: 20-February 05
Member No.: 174

Running a bandpass filter enhancement on the TIF version of the sunset pic <from the planetary photojournal website>, I get a psychadelic version that shows abundant, though very low contrast rippled haze, superimposed on random noise and digitization contours from the camera's data (original, or the 8-bit/channel tif)

Systematic color fringing of the haze patterns in the upper half of the frame (red on top, blue on bottom) indicates the direction of movement of the haze between image shutterings.

Most of the twilight images I've looked at have similar ultra-low contrast haze structure, different every time.

Attached thumbnail(s)

ElkGroveDan View Member Profile	Jun 11 2005, 03:51 AM Post #41
Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197	QUOTE (edstrick @ Jun 11 2005, 12:49 AM) Running a bandpass filter enhancement on the TIF version of the sunset pic <from the planetary photojournal website>, I get a psychadelic version Good job Picasso, but please don't cut off your ear just yet.. -------------------- If Occam had heard my theory, things would be very different now.

Phil Stooke View Member Profile	Jun 11 2005, 04:16 AM Post #42
Solar System Cartographer Group: Members Posts: 10265 Joined: 5-April 05 From: Canada Member No.: 227	Just saw Edstrick's Mars sunset image. Wow, that takes me back... several decades. Phil -------------------- ... because the Solar System ain't gonna map itself. Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain)

edstrick View Member Profile	Jun 11 2005, 07:05 AM Post #43
Senior Member Group: Members Posts: 1870 Joined: 20-February 05 Member No.: 174	(grins at Phil....) GREEN ROCKS!

dvandorn View Member Profile	Jun 11 2005, 09:44 AM Post #44
Senior Member Group: Members Posts: 3419 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15	QUOTE (Phil Stooke @ Jun 10 2005, 11:16 PM) Just saw Edstrick's Mars sunset image. Wow, that takes me back... several decades. Like, wow, man... Seriously, Ed's photomanipulation, while almost psychedelic in appearance, does contain some very interesting information. Anything that brings out such low-contrast features and shows movement with time is a valuable tool -- even if it looks like you had to take acid to figure it out... -the other Doug -------------------- “The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain

mike View Member Profile	Jun 11 2005, 07:41 PM Post #45
Member Group: Members Posts: 350 Joined: 20-June 04 From: Portland, Oregon, U.S.A. Member No.: 86	Yeah, because nobody's ever figured out anything meaningful while on acid... wink wink

« Next Oldest · Spirit · Next Newest »