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Tuesday, March 04, 2008

Backyard astronomy

If you were looking through a simple backyard telescope at the Earth and its Moon, this is what you'd see.

Earthmoon_from_mars

If your backyard were on Mars.

Posted by Beldar at 09:08 PM in Current Affairs | Permalink

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Comments

(1) Gregory Koster made the following comment | Mar 4, 2008 9:23:35 PM | Permalink

Dear Mr. Dyer: No, no, this is a picture of Hillary staring at the nomination, still out of reach. Yearning.

Sincerely yours,
Gregory Koster

(2) sherlock made the following comment | Mar 9, 2008 9:59:27 AM | Permalink

Great picture, but NOT what you would see in a "simple backyard telescope" from Mars.

I own a fairly non-simple backyard telescope, and during the extra-close opposition of Mars several years ago, I did not see it nearly as well as this picture.

I suspect the difference is attributable to 2 factors:
1. The optics of the Mars Observer are orders of magnitude better than those of the average backyard telescope, and of mine too.
2. The picture was not taken from the ground, but from in orbit around Mars. Mars doesn't have as dense an atmosphere as Earth, but it still makes a big difference if you get above it.

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