New Horizons Jupiter Encounter |
New Horizons Jupiter Encounter |
Guest_AlexBlackwell_* |
Jan 10 2007, 09:47 PM
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Feb 14 2007, 10:45 AM
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
Emily made a good point in her blog - perhaps it was a case of not wanting to blind lorri by having the whole disc filling the sensor at one time - or simply that the be sure they got the whole disk they simply 'framed' the target with four frames.
Doug |
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Feb 14 2007, 11:10 AM
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
I don't know about blinding the sensor, but there could be a point there in reducing noise due to readout smear. You have more black space to remove and possibly the readout smear noise doesn't accumulate as much (it's cumulative from one line to the other) as when you have a bright target.
Why Cassini did this I still don't realize as the required pointing accuracy was well within the limits for the narrow-angle camera. NH attitude accuracy is also very sufficient to accurately target stuff. -------------------- |
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