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#101
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 2454 Joined: 8-July 05 From: NGC 5907 Member No.: 430 ![]() |
ADMIN NOTE: Please note that this topic was unavoidably poltical before the 'No Politics' rule. Please restrict future comments to the mission/spacecraft/news updates etc.
WHAT'S NEW Robert L. Park Friday, 6 Jan 06 Washington, DC DEEP SPACE CLIMATE OBSERVATORY KILLED. http://bobpark.physics.umd.edu/index.html -------------------- "After having some business dealings with men, I am occasionally chagrined,
and feel as if I had done some wrong, and it is hard to forget the ugly circumstance. I see that such intercourse long continued would make one thoroughly prosaic, hard, and coarse. But the longest intercourse with Nature, though in her rudest moods, does not thus harden and make coarse. A hard, sensible man whom we liken to a rock is indeed much harder than a rock. From hard, coarse, insensible men with whom I have no sympathy, I go to commune with the rocks, whose hearts are comparatively soft." - Henry David Thoreau, November 15, 1853 |
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#102
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Member ![]() ![]() ![]() Group: Members Posts: 915 Joined: 4-September 06 From: Boston Member No.: 1102 ![]() |
Here is a maybe crazy, maybe not so crazy idea. Could interested scientists or institutions set up 1 to 3 dozen lasers around the globe that point at DSCOVR during daylight and act as fiduciaries. The images would all have a set of hot pixels for perfect alignment. I'm sure a few universities across the globe would be happy to operate a facility to put themselves on the map as reference points. Laser frequencies could be chosen to blind only one channel of one pixel for each fiduciary laser.
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#103
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Junior Member ![]() ![]() Group: Members Posts: 22 Joined: 7-January 13 Member No.: 6834 ![]() |
Here is a maybe crazy, maybe not so crazy idea. Could interested scientists or institutions set up 1 to 3 dozen lasers around the globe that point at DSCOVR during daylight and act as fiduciaries. The images would all have a set of hot pixels for perfect alignment. I'm sure a few universities across the globe would be happy to operate a facility to put themselves on the map as reference points. Laser frequencies could be chosen to blind only one channel of one pixel for each fiduciary laser. According to the paper linked above, they don't need this. They cross-correlate the EPIC images with image taken simultaneously by satellites in LEO. They have a precision of a fraction of a pixel, sufficient for their need.Considering they already have very precise pre-image registration for scientific purpose (called "navigation" precision in their paper), it's very unfortunate they don't update the L1B data with those corrected lat/lon values... |
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Lo-Fi Version | Time is now: 19th June 2024 - 08:22 PM |
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