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Atlantis-Hubble solar transit
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skyguy
May 18, 2009, 4:05:26 AM5/18/09
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Here's something you don't see every day. It's been done with a video
camera many times but he used a still camera! The two spacecraft crossed
the Sun in less than a second. He must have got the tracking data from
NASA to know exactly when it would happen. Even so, how do you take a
still picture that precisely? Maybe he controlled the shutter with a
computer which had it's internal clock syncronized to a universal time
standard like the Naval Observatory. In any case, an amazing feat.
camera many times but he used a still camera! The two spacecraft crossed
the Sun in less than a second. He must have got the tracking data from
NASA to know exactly when it would happen. Even so, how do you take a
still picture that precisely? Maybe he controlled the shutter with a
computer which had it's internal clock syncronized to a universal time
standard like the Naval Observatory. In any case, an amazing feat.
skyguy
May 19, 2009, 3:29:40 AM5/19/09
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skyguy wrote:
It turns out that he made sixteen still frame digital exposures in quick
succession at 4-fps, starting a few seconds before the predicted event.
In that case he could hardly miss getting the two spacecraft in at least
one of the frames. That's almost like using a video camera. It's still a
neat picture.
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