Reprocessing Historical Images, Looking for REALLY big challenges? |
Reprocessing Historical Images, Looking for REALLY big challenges? |
Apr 21 2005, 11:26 PM
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Member Group: Members Posts: 123 Joined: 21-February 05 Member No.: 175 |
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May 24 2005, 10:55 AM
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Senior Member Group: Members Posts: 1870 Joined: 20-February 05 Member No.: 174 |
The Surveyor images were recorded on tape... ANALOG TAPE in some form as a modulated slow-scan video signal. Selected images were later converted to digital format from the source tapes for test purposes and for quantitative analysis of brightness, color and polarization. It must have been gruelingly slow at the time, and the scientific yield was pretty modest. I doubt the analog tapes exist any more but you never know.
Some decade ago, there was a effort underway to get funding to digitize the analog format Lunar Orbiter raw data tapes. As I recall there were one or two known surviving and workable or repairable drives that they said <whoever they were, I don't recall, but it was a team in the planetary sciences community> would read the tapes. I recall some information about the tapes being found in some JPL paint storage etc building, where they'd migrated to from higher quality storage. <I don't recall if this is true or not, now> The effort fell through. NASA wasn't interested. I have no idea if the tapes still survive. |
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May 24 2005, 11:45 AM
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
QUOTE (edstrick @ May 24 2005, 10:55 AM) The Surveyor images were recorded on tape... ANALOG TAPE in some form as a modulated slow-scan video signal. Selected images were later converted to digital format from the source tapes for test purposes and for quantitative analysis of brightness, color and polarization. It must have been gruelingly slow at the time, and the scientific yield was pretty modest. I doubt the analog tapes exist any more but you never know. Some decade ago, there was a effort underway to get funding to digitize the analog format Lunar Orbiter raw data tapes. As I recall there were one or two known surviving and workable or repairable drives that they said <whoever they were, I don't recall, but it was a team in the planetary sciences community> would read the tapes. I recall some information about the tapes being found in some JPL paint storage etc building, where they'd migrated to from higher quality storage. <I don't recall if this is true or not, now> The effort fell through. NASA wasn't interested. I have no idea if the tapes still survive. Actually, that project is still underway. http://astrogeology.usgs.gov/Projects/Luna...erDigitization/ -------------------- |
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