Venus Full Disk -mariner 10 |
Venus Full Disk -mariner 10 |
Sep 13 2005, 04:22 PM
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#1
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Member Group: Members Posts: 241 Joined: 22-August 05 From: Stockholm Sweden Member No.: 468 |
Hi!
I have just finished compositing this large Venus panorama from Mariner 10. I have tried to generate natural colors for the planet using orange and UV filters. Raw frames: FDS 58870-59038 I used 78 frames in that range and then picked out a few other frames to fill in the gaps. There where about 5% missing data. I did dark subtraction and flatfielding. for flatfields i used the venus images that looked flat enough. Does anyone have any information on camera linearity and stuff? I cant seem to find the calibration report; "MVM 73 TV Subsystem Calibration Report". if anyone has it, please let me have a look! The full panorama is 4000*4000 pixels. All processing is done in either floats or 16bit. Take a look! /mattias Venus realistic colors Venus enhanced colors Venus in UV |
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Sep 19 2005, 10:45 AM
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#2
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Senior Member Group: Members Posts: 1870 Joined: 20-February 05 Member No.: 174 |
I'm not sure but I think the Mariner 10 Earth/Moon pics were partly accidental. On launch, the camera lens heaters failed to turn on. They expected the cameras to defocus like the Deep Impact camera ended up as the lens barrels cooled down. They immediately fired up the imaging system for test and calibration pics, including a star cluster <Pleiades???>. Cameras stayed in focus just fine. Go Figure!
They had a backup spacecraft....they'd preped the engineering-test spacecraft for a contingency flight and had a spare atlas-centaur at the pad, and they wanted to know if the mission was going to lose imaging to defocused images in time to prep and launch in the launch window. It was fine and the vehicle ended up museumed. <new verb> |
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