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Hubble Observations, Home-brew colour images from ESO Archive |
 Feb 28 2006, 10:12 AM
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Founder  Group: Chairman Posts: 14445 Joined: 8-February 04 Member No.: 1  |
The joy of data
 edited: Right - done all the ACS one's I can find..... Jan '03 : 297 Million km http://www.unmannedspaceflight.com/doug_im...fv01gcq_drz.jpg March '03 : 218 Million km http://www.unmannedspaceflight.com/doug_im...fv03ahq_drz.jpg May '03 : 128 Million km http://www.unmannedspaceflight.com/doug_im...fv05l8q_drz.jpg June '03 : 86 Million km http://www.unmannedspaceflight.com/doug_im...fv07unq_drz.jpg Aug '03: 60 Million km http://www.unmannedspaceflight.com/doug_im...n410lmq_drz.jpg Sept '03 : 57 Million km http://www.unmannedspaceflight.com/doug_im...p722jfq_drz.jpg Sept '03 : 58 Million km http://www.unmannedspaceflight.com/doug_im...p723tdq_drz.jpg Feb '04 : 228 Million km http://www.unmannedspaceflight.com/doug_im...n470otq_drz.jpg The little 'tick' mark is still there, even though I'm using geometric and flat/noise/dark field correction - I think this is why the outside of Hubble press images of mars appear pixelated, they're re-projected to take out the 'tick' on the CCD. Still looking into exactly what it is. Doug |
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Feb 28 2006, 01:16 PM
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#2
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 Senior Member Group: Members Posts: 2488 Joined: 17-April 05 From: Glasgow, Scotland, UK Member No.: 239 |
QUOTE (djellison @ Feb 28 2006, 10:12 AM)  The joy of data Attached - Hubble images of Mars using the ACS, with roughly RGB images ( 435/502/658 ) from Feb 04 and Dec 03 - and I'm going to hunt for others using the same filter sets. Doug Doug: Possibly the nicest view of the remnant polar cap I've seen! More! More! More! (please) Bob Shaw -------------------- Remember: Time Flies like the wind - but Fruit Flies like bananas!
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Feb 28 2006, 10:01 PM
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#3
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 Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
QUOTE (djellison @ Feb 28 2006, 10:28 PM) I'll have them all done later I think.
-------------------- I always think before posting! - Marco -
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Feb 28 2006, 10:25 PM
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#4
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Founder Group: Chairman Posts: 14445 Joined: 8-February 04 Member No.: 1 |
All done - see top post. I'm going to have a hack at WFPC2 ones as well at some point.
Doug |
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Feb 28 2006, 10:34 PM
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#5
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Senior Member Group: Members Posts: 2488 Joined: 17-April 05 From: Glasgow, Scotland, UK Member No.: 239 |
Doug:
Lovely images! The 'tick' looks like a physical object somewhere in the optics - it protrudes the same amount into all the images. I bet it's there in the images with a largely black sky and just a small planet. Bob Shaw -------------------- Remember: Time Flies like the wind - but Fruit Flies like bananas!
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Feb 28 2006, 10:36 PM
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#6
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Founder Group: Chairman Posts: 14445 Joined: 8-February 04 Member No.: 1 |
Oh yes - it's in every image from the high res channel - enough stretching shows them in the data for every image thru every filter, it's something to do with the camera, I just don't know what/why. Nothing I can do to 'combat' it though - just morbid curiosty as to what it is
Doug (PS - ahh - it appears the HRC is giving me the finger... http://www.stsci.edu/hst/acs/faqs/finger.html ) |
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Mar 1 2006, 10:40 AM
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#7
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Founder Group: Chairman Posts: 14445 Joined: 8-February 04 Member No.: 1 |
I've searched for WFPC2 observations using similar filter (410, 502, 673 if memory serves me right - blueish, greenish, near IR ish)
I've requested some 208 images from the server - almost 70 individual rgb sets of observations. That'll be nice. (should never have got started on this )Doug |
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Mar 2 2006, 12:02 PM
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#8
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Founder Group: Chairman Posts: 14445 Joined: 8-February 04 Member No.: 1 |
This is the first WFPC2 image I've done, they're 800^2 not 1024^2 - so a little smaller, but in terms of image quality, they're just as good - and there's a LOT of them - as you can see this one is from 1994
 Doug
Attached thumbnail(s)
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Mar 2 2006, 06:59 PM
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#9
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Senior Member Group: Members Posts: 2488 Joined: 17-April 05 From: Glasgow, Scotland, UK Member No.: 239 |
Doug:
Found any Moon images? Bob Shaw -------------------- Remember: Time Flies like the wind - but Fruit Flies like bananas!
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Mar 2 2006, 07:21 PM
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#10
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Founder Group: Chairman Posts: 14445 Joined: 8-February 04 Member No.: 1 |
I've looked - but searching under 'moon' doesnt work. Searching for 'mars' does (for mars images) - ditto 'luna' or 'lunar' - nothing.. Not sure what other values to try using to be honest.
Have a look for yourself if you like - http://archive.eso.org Doug |
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Mar 2 2006, 08:32 PM
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#11
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Senior Member Group: Members Posts: 2488 Joined: 17-April 05 From: Glasgow, Scotland, UK Member No.: 239 |
QUOTE (djellison @ Mar 2 2006, 07:21 PM) I've looked - but searching under 'moon' doesnt work. Searching for 'mars' does (for mars images) - ditto 'luna' or 'lunar' - nothing.. Not sure what other values to try using to be honest. Have a look for yourself if you like - http://archive.eso.org Doug I think the PI for the Moon shots was J Garvin, if that helps - I'll have a look on Friday. Bob shaw -------------------- Remember: Time Flies like the wind - but Fruit Flies like bananas!
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Mar 2 2006, 08:46 PM
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 Dublin Correspondent Group: Admin Posts: 1799 Joined: 28-March 05 From: Celbridge, Ireland Member No.: 220 |
QUOTE (Bob Shaw @ Mar 2 2006, 08:32 PM) I think the PI for the Moon shots was J Garvin, if that helps - I'll have a look on Friday. Bob shaw Yep Hubble searching for lunar resources from last year And there is a also some work by alex Storrs in 1999 |
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Mar 2 2006, 08:51 PM
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#13
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Senior Member Group: Members Posts: 2488 Joined: 17-April 05 From: Glasgow, Scotland, UK Member No.: 239 |
QUOTE (djellison @ Feb 28 2006, 10:36 PM) Oh yes - it's in every image from the high res channel - enough stretching shows them in the data for every image thru every filter, it's something to do with the camera, I just don't know what/why. Nothing I can do to 'combat' it though - just morbid curiosty as to what it is Doug (PS - ahh - it appears the HRC is giving me the finger... http://www.stsci.edu/hst/acs/faqs/finger.html ) Doug: And these comments at http://www.spacetelescope.org/images/html/opo0534m.html Doug: 'Hubble's High Resolution Camera - "Mind the Gap" The Advanced Camera for Surveys on Hubble Space Telescope includes two cameras, the Wide Field Channel (WFC) and the High Resolution Channel (HRC). Images from the WFC are roughly 4,000 pixels square with a scale of roughly 0.05 arcseconds per pixel. Images from the HRC are smaller in pixel size, 1,000 pixels square, but have a finer resolution, 0.025 arcseconds per pixel. The HRC is preferred for images of planets, or objects appearing smaller on the sky, where higher resolution outweighs larger field of view. The HRC also has two occulting masks that can block starlight from bright sources, and allow fainter objects nearby that are otherwise lost in the glare of the brighter object to be visible. One of the masks can be removed, but the other mask, seen in this Mars image at the lower left corner, can not be moved out of the light path. This "occulting finger" blocked a small portion of the light from Mars. The small amount of missing data in the final color composite of Mars was corrected by filling with nearby sections of the image of similar color and texture. This is a method commonly used in digital photography to remove blemishes, but is not used with data published in scientific papers.' So they just cloned in some colour and detail for the press images! Bob Shaw -------------------- Remember: Time Flies like the wind - but Fruit Flies like bananas!
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Mar 2 2006, 09:48 PM
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Founder Group: Chairman Posts: 14445 Joined: 8-February 04 Member No.: 1 |
That stuff from Garvin wont be release for raw-pleasure until later this year ( it's usually 12 months )
However - I think I've found the Storrs stuff - it's listed as 'copernicus' with the PI Caldwell (as I believe these obs were a ride-along type observation) Having a look at them now Doug |
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Mar 2 2006, 10:18 PM
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#15
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Founder Group: Chairman Posts: 14445 Joined: 8-February 04 Member No.: 1 |
7 frames in all -
CODE M More Target Name Instr Dataset Name Release Date Exposure Time Filter Grating PI Name Proposal ID Asn Type Num Camera COPERNICUS WFPC2 U4YM0301R 07 Nov 1999 0.400 F502N CALDWELL 7717 - - WFPC2 COPERNICUS WFPC2 U4YM0302R 07 Nov 1999 0.110 F673N CALDWELL 7717 - - WFPC2 COPERNICUS WFPC2 U4YM0303R 07 Nov 1999 0.800 F953N CALDWELL 7717 - - WFPC2 COPERNICUS WFPC2 U4YM0304R 07 Nov 1999 0.800 F953N CALDWELL 7717 - - WFPC2 COPERNICUS WFPC2 U4YM0305R 07 Nov 1999 0.110 F673N CALDWELL 7717 - - WFPC2 COPERNICUS WFPC2 U4YM0306R 07 Nov 1999 0.400 F502N CALDWELL 7717 - - WFPC2 COPERNICUS WFPC2 U4YM0307R 07 Nov 1999 1.000 F437N CALDWELL 7717 - - WFPC2 COPERNICUS WFPC2 U4YM0308R 07 Nov 1999 1.000 F437N CALDWELL 7717 - - WFPC2 COPERNICUS WFPC2 U4YM0309R 07 Nov 1999 1.000 F437N CALDWELL 7717 - - WFPC2 COPERNICUS WFPC2 U4YM030AR 07 Nov 1999 1.000 F437N CALDWELL 7717 - - WFPC2 (Some were duplicate frames, multiple filters on the same spot) Interesting little mosaic - nice bit of fun - here's the official job ( notice the properly calibrated imagery doesnt have the between-ccd-'cracks' http://hubblesite.org/newscenter/newsdesk/...14/image/b+warn Doug
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