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 27 2006, 08:15 PM
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#16
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
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Apr 27 2006, 08:29 PM
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#17
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Senior Member Group: Members Posts: 2488 Joined: 17-April 05 From: Glasgow, Scotland, UK Member No.: 239 |
Doug:
About time, too! Happy mining! Bob Shaw -------------------- Remember: Time Flies like the wind - but Fruit Flies like bananas!
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Apr 27 2006, 08:32 PM
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#18
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
I'm struggling to find meridiani obs using lat long search - what parameters are you using?
Doug |
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Apr 27 2006, 10:43 PM
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#19
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Newbie Group: Members Posts: 17 Joined: 25-April 05 From: Pilsen, CZ, EU Member No.: 363 |
The middle part of that huge 70k tall Gusev observation Looking around, it seems that a lot more nIR,G,B obs have been done than RGB. The HSRC doc says it has following filters: nadir, outer stereo (2), photometric (2) 675±90 nm; blue 440±45 nm; green 530±45 nm; red 750±20 nm; near-IR 970±45 nm. I'm struggling to find meridiani obs using lat long search - what parameters are you using? I used the coords from Google Mars: -1.95 354.47 |
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Apr 28 2006, 07:55 AM
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#20
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
1087, 1154, 1096 - all polar obs with nIR, G, B - perhaps the ice acts as an 'auto-level' thus making these look reasonable sans-radiometric-calibration
1201 just doesnt quite work out right - it needs that offset and scale processing I would imagine - and just for the sake of looking, I did the 1201 Super-Res channel mosaic as well. |
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Apr 28 2006, 08:54 AM
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#21
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Member Group: Admin Posts: 468 Joined: 11-February 04 From: USA Member No.: 21 |
Nix: those first couple were just me looking up the orbit number mentioned in the press releases, I'm just getting a feel for the interface now as well...
babakm: that wasn't the most appropriate word choice on my part, but if we aren't laughing then we're probably crying. I see this glass as being half-full of data (which, for the ESA, is pretty good!) Doug: 1201, with the scaling factors applied, looks...cartoonishly orange. I'm seeing a lot of individual images that are coming out that color, with almost no chromatic range at all. I'm not sure if a: I'm misapplying these factors, b: the factors are wrong c: it really did look this red from a high phase or illumination angle, both of which would exacerbate the atmospheric filtering or d: the red filter (which is realistically a Near-IR filter itself, with its center outside of human vision) is a bad indication of visible red. |
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Apr 28 2006, 09:33 AM
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#22
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
"Kid in Candy Store" T-Shirts now available...we're nearly there
There seems to have been a systematic survey of the south pole during the 1000-1200 orbit numbers. And similarly, a LOT of images of Val-Mar. Mosaic-o-rama-a-go-go at some point Doug |
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Apr 28 2006, 10:05 AM
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#23
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
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Apr 28 2006, 11:59 AM
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#24
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
Here's some interesting stuff....
A volcano ( I thought Ol.Mons but I have no idea to be honest - it isnt Ol Mons, a metaphorical cookie for whoever identifies it first ) from the HRSC, showing the coverage of the SRC - and then the SRC mosaic to match. Because this is a stereo camera, and because there are some serious elevation changes in this lot, you get slight channel miss-match in places - especially with high altitude clouds ( as with some of the polar images ) The HRSC colour image is at a best res of 102 m/pixel - the SRC 3.5m/pixel ( but I've downscaled, so 7m/pixel ) |
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Apr 28 2006, 01:02 PM
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#25
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Member Group: Members Posts: 531 Joined: 24-August 05 Member No.: 471 |
Doug, great image of Pavonis Mons. Too easy.
Yummy ... -------------------- - blue_scape / Nico -
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Apr 28 2006, 01:03 PM
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#26
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
You win....a metaphorical cookie
Do you realise than in the space of 36 hrs we've output more HRSC images than ESA would do in about 6 months Doug |
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Apr 28 2006, 01:10 PM
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#27
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Member Group: Members Posts: 531 Joined: 24-August 05 Member No.: 471 |
Thank you sooo much.
My favorite is Pollack with White Rock. Nice contex image. -------------------- - blue_scape / Nico -
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Apr 28 2006, 01:23 PM
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#28
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
You noticed that one has SIX DD's on it...SIX - and all fairly large to be detected at that res.
Doug |
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Apr 28 2006, 02:15 PM
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#29
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Member Group: Members Posts: 531 Joined: 24-August 05 Member No.: 471 |
QUOTE You noticed that one has SIX DD's on it No. Six?? Where?
-------------------- - blue_scape / Nico -
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Apr 28 2006, 02:28 PM
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#30
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
Actually - I'm going to pitch for more like 12...and I've not highlighted them but there's potentially another 2 in there as well, possibly more. I used Blue, Green and nIR for these...
Blue START_TIME = 2004-12-25T00:55:56.360Z Green START_TIME = 2004-12-25T00:55:37.866Z nIR START_TIME = 2004-12-25T00:55:04.547Z So - given that the red image is 'leading' the blue by 52 seconds, the full res is 89.5 m/pixel, and I'm getting between 6 and 9 pixels of motion between thsoe two frames...I'd estimate a speed of between 10 and 15 m/sec in a SE direction - one problem would be figuring out how much of that apparant motion is because of the slightly different p.o.v. between filters - but I think 10m/sec is a fair estimation. Look at me, getting all scientific Sadly - they didn't do all the filtes for this obs, but there's a normal red, and an ND filter obs that I've not looked at, so I'll try and do the maths with those later - see how well it ties in with 10-15m/sec Doug |
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