LCROSS en route |
LCROSS en route |
Jul 15 2009, 03:08 PM
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#1
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Junior Member Group: Members Posts: 87 Joined: 9-November 07 Member No.: 3958 |
While we're waiting for Those Pictures, here are a couple of shots of LCROSS from our campus observatory last night (0221, 027 UT on 15 July). 4 minute exposures tracking expected motion from the Horizons ephemeris, within 20 degrees of the southern horizon and fighting summertime haze as well as city lights. I wanted to catch it before its inclined orbit takes it too far south, after which it spends a week or so as a predawn object. The range was about 563,000 km, and the Centaur is no bigger than a CSM/LM combination, so this is a more difficult target than spotting an Apollo enroute was. (On the other hand, nobody had CCD imagers in 1969).
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Sep 29 2009, 01:03 PM
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Member Group: Members Posts: 157 Joined: 22-May 09 From: Ireland Member No.: 4792 |
I would think that they'll probably aim for the red-boxed region (right) as shown in the image below?
However, as to why Cabeus A was chosen initially is a puzzle as looking at the water equivalent hydrogen image (left), that while Cabeus A (Cabeus A1, really) has a much higher concentration (purple rectangle), its area is very much smaller to those of Cabeus and Cabeus B regions (oranges/reds) where the concentrations are smaller, but likely of successfully hitting them is better, isn't it? John ------------ A Moon Site |
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