Earth to Perform Asteroid 'Flyby' - Unmanned Spaceflight.com

Earth to Perform Asteroid 'Flyby', Radar imaging

Toma B View Member Profile	May 3 2011, 09:02 AM Post #1
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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Nov 9 2011, 12:46 AM

Post #2

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Here's a tweaked six frame animation of the asteroid rotation, a little larger and slower than the official version.

Click to animate.

dilo

Nov 10 2011, 04:05 PM

Post #3

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This is my attempt to improve animation through de-pixalization (Gauss filter) and height reduction (better aspect ratio)

Thanks to Astro0 for source animation!

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I always think before posting! - Marco -

Posts in this topic

Toma B Earth to Perform Asteroid 'Flyby' May 3 2011, 09:02 AM

tedstryk QUOTE (Toma B @ May 3 2011, 10:02 AM) Ast... May 3 2011, 09:42 AM

Hungry4info So essentially, Earth's camera pointing is not... May 3 2011, 10:37 AM

Phil Stooke The resolution of delay-doppler imaging has nothin... May 3 2011, 02:32 PM

Holder of the Two Leashes QUOTE (Toma B @ May 3 2011, 04:02 AM) If ... May 3 2011, 02:52 PM

Paolo any chances a distant artificial satellite may pas... May 3 2011, 05:26 PM

Holder of the Two Leashes Sorry, no chance. Telescopic observations should ... May 3 2011, 05:46 PM

tasp I appreciate the radio 'pancake' analogy, ... May 3 2011, 07:01 PM

Holder of the Two Leashes The transmitted frequency is kept steady. Held to... May 9 2011, 03:15 PM

ElkGroveDan Look, if they say Arecibo can't do this one ei... May 9 2011, 04:14 PM

jasedm Hmmm, if I was a betting man.. May 9 2011, 04:24 PM

Paolo my spidey sense tells me they are having equipment... May 9 2011, 05:33 PM

tedstryk I wonder if anyone will get a good view with adapt... May 10 2011, 01:53 AM

Holder of the Two Leashes As of late September, the Aricebo radar was finall... Oct 28 2011, 04:27 AM

ugordan Radar image of 2005 YU55 from Goldstone taken on N... Nov 7 2011, 11:30 PM

Hungry4info This is going to be a newby question, but why are ... Nov 8 2011, 12:06 AM

john_s The answer is that radar images don't show the... Nov 8 2011, 12:36 AM

Hungry4info Interesting! Thanks! Much appreciated. Nov 8 2011, 01:14 AM

Phil Stooke John's right, of course, but the same radar da... Nov 8 2011, 03:49 AM

Astro0 Here's a tweaked six frame animation of the as... Nov 9 2011, 12:46 AM

dilo This is my attempt to improve animation through de... Nov 10 2011, 04:05 PM

Paolo two interesting releases on YU55: Arecibo radar ob... Nov 16 2011, 07:10 PM

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