Third HSRC Release!, Includes map-projected calibrated images |
Third HSRC Release!, Includes map-projected calibrated images |
Apr 26 2006, 04:21 AM
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#1
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Newbie Group: Members Posts: 17 Joined: 25-April 05 From: Pilsen, CZ, EU Member No.: 363 |
ESA released new set of HRSC images from orbits 1225 and 1863, which are map projected and radiometrically calibrated. At this moment you have to get them through the PSA interface
A color composite of a stripe of Meridiani Planum (includes Victoria) can be found here (2MB) |
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Apr 26 2006, 07:21 AM
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#2
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Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
A color composite of a stripe of Meridiani Planum (includes Victoria) can be found here (2MB) In fact, this is a 90deg rotated analglyph ( )... I'm not able to identify Victoria, even though there are many simil-Victoria crates... could you kindly show me where should be? -------------------- I always think before posting! - Marco -
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Apr 26 2006, 07:37 AM
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#3
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Newbie Group: Members Posts: 17 Joined: 25-April 05 From: Pilsen, CZ, EU Member No.: 363 |
Actually, it's just simple color composite - exactly same as in Oppy subforum. I know the color doesn't feel right somehow but it's not rotated. Look for the 3 big lined craters on the right about 3/4 down the image. Then in the lighter "rectangle" left of the topmost crater, is Victoria. Pixelwise it's [1180;15588] Or look at the Victoria crop for context
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Apr 26 2006, 08:55 AM
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#4
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Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
Perhaps not intentional, but channel shift around this crater (located at 1/5th of image height) is really 3D if rotated 90deg clockwise and seen through 3D glasses
-------------------- I always think before posting! - Marco -
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Apr 26 2006, 09:28 AM
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#5
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Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
-------------------- I always think before posting! - Marco -
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Apr 26 2006, 03:27 PM
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#6
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Member Group: Admin Posts: 468 Joined: 11-February 04 From: USA Member No.: 21 |
As with the calibrated MER images, there are radiance offsets and factors that need to be applied to get each image into absolute units. They are in the PDS tags. Hilariously, in the map projected images, there are two tags for offset and two tags for scaling, labeled identically. They are significantly different in value, and there's no mention of which is actually supposed to be used...but by trial and error, I think it's the second of each that is appropriate to the map projected images (could be COMPLETELY wrong about this.)
Here's a couple simple image->RGB channel color versions, but with the scaling factors applied (not even close to true color, but a step in the right direction) The Meridiani image, thumbnail is rotated (left is south), full size has an arrow pointing at Victoria: And a crop of the full swath containing the water-ice crater on Vastitas Borealis I'm surprised they didn't mention the larger ice sheet north of the crater in their original releases. It is quite a sight. |
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Apr 26 2006, 05:54 PM
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#7
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Chief Assistant Group: Admin Posts: 1409 Joined: 5-January 05 From: Ierapetra, Greece Member No.: 136 |
Great work -as always, Daniel
The larger ice sheet is indeed very impressive. Nico -------------------- photographer, space imagery enthusiast, proud father and partner, and geek.
http://500px.com/sacred-photons & |
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Apr 26 2006, 06:32 PM
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#8
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
BJORN - img2png has another 'requriement'
Dan - did you get those via the map interface or elsewhere? The bottom image is superb. Doug |
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Apr 26 2006, 06:39 PM
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#9
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Member Group: Admin Posts: 468 Joined: 11-February 04 From: USA Member No.: 21 |
Thanks Nix, Doug!
Doug: classical interface, searching by orbit number, which works like a charm. Having just discovered these radiometric map projected images (thank you jaywee!!!), well, I'm in 'little kid meets candy store' land to say the least Here's another from much earlier in the mission. In the Water at Martian South Pole image release, we saw an OMEGA false color image, and a b/w closeup of the South polar cap. Here's that same area, in color (cropped, and at half res): |
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Apr 26 2006, 08:41 PM
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#10
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Chief Assistant Group: Admin Posts: 1409 Joined: 5-January 05 From: Ierapetra, Greece Member No.: 136 |
Man I'm enjoying these.. Keep the candy coming
Nico -------------------- photographer, space imagery enthusiast, proud father and partner, and geek.
http://500px.com/sacred-photons & |
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Apr 27 2006, 06:12 PM
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#11
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
Just getting stuff via the RSSD and I can see your folders on the server Dan
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Apr 27 2006, 06:36 PM
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#12
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
You know how some MER mosaics are large....
The Gusev obs from Jan 16th '04....oh my... 4295 x 75,543 - call it 325 Megapixels. Doug |
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Apr 27 2006, 06:49 PM
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#13
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Chief Assistant Group: Admin Posts: 1409 Joined: 5-January 05 From: Ierapetra, Greece Member No.: 136 |
I'm getting that interface too now, yet where do you get info on orbit numbers and such?
Nico -------------------- photographer, space imagery enthusiast, proud father and partner, and geek.
http://500px.com/sacred-photons & |
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Apr 27 2006, 07:48 PM
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#14
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Junior Member Group: Members Posts: 91 Joined: 27-January 05 From: Arlington, Virginia Member No.: 159 |
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Apr 27 2006, 07:50 PM
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#15
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
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