Earth to Perform Asteroid 'Flyby', Radar imaging |
Earth to Perform Asteroid 'Flyby', Radar imaging |
May 3 2011, 09:02 AM
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Member Group: Members Posts: 648 Joined: 9-May 05 From: Subotica Member No.: 384 |
Asteroid 'Flyby' This Fall
In the text above it clearly says: "The best resolution of the radar images was 7.5 meters [25 feet] per pixel , when the asteroid was about 2.3 million kilometers away from Earth back in April 2010." Than it says that "When 2005 YU55 returns this fall the asteroid will be seven times closer. We're expecting some very detailed radar images. "When 2005 YU55 returns this fall, we intend to image it at 4-meter resolution with our recently upgraded equipment at the Deep Space Network at Goldstone, California." [/quote] So where is that upgrade?!? When imaging from 2,300,000 Km res= 7.5 m/pix When imaging from 325,000 Km res= 4 m/pix I just don't get it. If there was no "upgrade" resolution should be about 1 m/pix this time because asteroid is 7 times closer! Can anybody understand/explain this? -------------------- The scientist does not study nature because it is useful; he studies it because he delights in it, and he delights in it because it is beautiful.
Jules H. Poincare My "Astrophotos" gallery on flickr... |
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