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In article ,
Uncle Al wrote: Hubble may *not* look at the moon. The brightness would burn out its optical detectors. Not so, as others have commented. Some of Hubble's instruments (notably the now-retired Faint Object Camera) could not tolerate looking at the Moon, but some can. Hubble doesn't normally look at the Moon because the Moon moves too fast for Hubble's fine-guidance system to track it. Hubble has gotten images of the Moon occasionally, generally when the Moon was being used as a calibration target for other instruments and the camera shot a few pictures on general principles; the calibrations didn't need ultra-fine pointing accuracy and the camera exposures were short. -- MOST launched 30 June; first light, 29 July; 5arcsec | Henry Spencer pointing, 10 Sept; first science, early Oct; all well. | |
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