Rosetta Mars |
Rosetta Mars |
Jan 24 2012, 01:37 AM
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#31
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
I need to upgrade IMG2PNG to 'know' the Osiris data. I may do it this weekend or possibly earlier. Now you tell me I noticed the varying color values when attempting to assemble the 4-frame mosaic. I was hoping to make one with Phobos appearing four times across the disk, but had to give up partway through; it just wasn't working. In the meantime, here's one with Mars limb and Phobos. Pseudocolor, made of Red and UV frames only (the reason for the bizarre violet color at the limb). I had to brighten Phobos a lot to make it visible at lower resolution -- it's a very dark moon! For those of you attempting color processing, please note that the "Red" filter is actually pretty far red, out at 744 nm. For RGB purposes it's best to use the "orange" filter at 650 nm. So you want images whose filenames end in 82, 83, and 84 (orange, green, and blue filters in combination with a neutral density clear filter) or 22, 23, and 24 (orange, green, and blue filters in combination with a regular clear filter). -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Jan 24 2012, 06:25 PM
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#32
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
In the meantime, here's one with Mars limb and Phobos. Pseudocolor, made of Red and UV frames only Why didn't you use the regular OGB filter set? -------------------- |
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Jan 24 2012, 11:56 PM
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#33
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
Because it was getting late, and somehow I missed that they were there. Ooops.
-------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Jan 25 2012, 12:36 AM
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#34
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IMG to PNG GOD Group: Moderator Posts: 2251 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
I have uploaded a new version of IMG2PNG. It has a new command line parameter "-fstretch" which is used to specify how to map the floating point data to 2 byte integers in cases where IMG2PNG doesn't 'know' which parameters are applicable (in these cases it has always used the actual range of the data as described earlier).
For example: img2png *.img -fstretch0,0.1 This is useful for forcing IMG2PNG to use the same parameters for many images which is necessary when doing color composites. To get a rough idea of which fstretch values might be good first run IMG2PNG without -fstretch and notice a line in the output that looks like this: Floating point to 16 bit integer conversion: [-0.000023,0.059897] -> [0,65535] This suggests that -fstretch0,0.06 might be good - or maybe -fstretch0,0.1 to avoid getting saturated areas for images where different and 'brighter' filters might have been used. The new version is available here. (By the way, when you run this new version of IMG2PNG the first line you see should read "IMG2PNG v2.02 20120125" - otherwise you have an old version. There were some weird problems a few days ago when uploading and/or downloading IMG2PNG so you should check this just in case). |
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Jan 25 2012, 12:56 AM
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#35
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
Bjorn, I just want to say here publicly how grateful I am for your continuous support of IMG2PNG. I know that you use the software yourself, which may be why you update it so regularly, but by making it available and useable by the public and maintaining it so up-to-date you are doing an immesurable service to our community. Thank you!
-------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Jan 25 2012, 08:29 AM
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#36
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
Because it was getting late, and somehow I missed that they were there. Ooops. I had a feeling that might have been the case. Also happens to me sometimes. -------------------- |
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Jan 25 2012, 10:19 AM
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#37
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
Bjorn, I just want to say here publicly how grateful I am for your continuous support of IMG2PNG... The same is true for me. Different ways how open raw pds images exists (they can be opened simply as raw file in appropriate editor), but these batch converting capabilities of IMG2PNG are unbeatable. Thank you! -------------------- |
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Jan 25 2012, 05:33 PM
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#38
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Solar System Cartographer Group: Members Posts: 10166 Joined: 5-April 05 From: Canada Member No.: 227 |
This is the result of enlarging (x4) and merging twelve of the Phobos occultation frames. The noise partly cancels out leaving a clearer view of Phobos itself.
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 PD: 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) |
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Jan 26 2012, 12:38 AM
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#39
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IMG to PNG GOD Group: Moderator Posts: 2251 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
Bjorn, I just want to say here publicly how grateful I am for your continuous support of IMG2PNG. The same is true for me. Different ways how open raw pds images exists (they can be opened simply as raw file in appropriate editor), but these batch converting capabilities of IMG2PNG are unbeatable. Thank you! Thanks. In a sense this is a positive feedback loop: The better IMG2PNG gets the more planetary images I get to see - which is a good thing . |
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Oct 1 2012, 11:27 AM
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#40
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Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
many years later... ESA has released one Rosetta Mars image as its image of the week
Crescent Mars |
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Oct 1 2012, 12:16 PM
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#41
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
And it's Emily's composite at that.
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Oct 1 2012, 02:47 PM
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#42
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Member Group: Members Posts: 495 Joined: 12-February 12 Member No.: 6336 |
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Feb 1 2013, 01:49 PM
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#43
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Member Group: Members Posts: 239 Joined: 28-October 12 Member No.: 6732 |
In her recent blog post, Emily Lakdawalla reminds us of the famous Rosetta/Philae Mars flyby photo. But the caption is erroneous. The view is not centered near Syrtis Major. The photo shows the border between Acidalia Planitia and Arabia Terra. On the left side is visible the southern part of Cydonia Mensae, and on the right side is visible Mawrth Vallis and the Oyama crater.
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Feb 1 2013, 04:44 PM
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#44
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Solar System Cartographer Group: Members Posts: 10166 Joined: 5-April 05 From: Canada Member No.: 227 |
-------------------- ... 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 PD: 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) |
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Feb 1 2013, 05:42 PM
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#45
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
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Lo-Fi Version | Time is now: 25th May 2024 - 12:43 PM |
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