HiRISE Images on 'Mars on Google Earth', Incorrect location of PSP_002347_1915 on the surface |
HiRISE Images on 'Mars on Google Earth', Incorrect location of PSP_002347_1915 on the surface |
Nov 16 2010, 04:18 PM
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#1
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Newbie Group: Members Posts: 11 Joined: 28-April 09 Member No.: 4752 |
Am I the only person who has noted the incorrect location of the HiRISE image PSP_002347_1915 on the surface of Mars in Google Earth ?
It has been placed at 11.69° North, instead of 11.59°. This can be easily confirmed by adding the CTX image P03_002136_1918_XI_11N269W at 11.75°N; 90.88°E and adjusting its transparency. 2 main craters in PSP_002347_1915 are seen to move wrt CTX. But the CTX image lines up well with the background Mars surface. Does anyone know how to inform the guys at 'Mars on Google Earth' of the error and get it fixed ? |
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Nov 16 2010, 10:34 PM
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#2
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Senior Member Group: Admin Posts: 3108 Joined: 21-December 05 From: Canberra, Australia Member No.: 615 |
Stuart, there's been lots of discussion about the maps and postions over on this thread and this one where Ross Beyer from the Planetary Content Team at NASA Ames, works with Google, Inc. to get content into Google Mars.
These are the guys to ask, but believe me they already know the problems and are working to fix them. |
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Nov 17 2010, 10:01 AM
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#3
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Junior Member Group: Members Posts: 55 Joined: 6-March 10 From: Cincinnati, OH Member No.: 5246 |
Google has another problem with their Mars coordinates. They show the tropics of Cancer and Capricorn at +/-23.45 degrees latitude. This is for Earth, not Mars. On Mars, the tropical latitudes are from +25.19 to -25.19 degrees. This may not be a problem in relation to locating spacecraft image coordinates, but it's a blaring enough error to make me suspect the coordinates of anything shown on Google Mars. I'm surprised this hasn't been fixed yet.
--Addendum to above-- Is Google accounting for the difference between areographic and areocentric coordinates? The discrepancy cited in the starting post is a tenth of a degree. This sounds about right for the expected difference of the two coordinate systems at latitude 11 degrees. Just a thought. Tom |
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Nov 17 2010, 10:54 AM
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#4
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Newbie Group: Members Posts: 11 Joined: 28-April 09 Member No.: 4752 |
ADMIN: Unnecessary quoting removed. Refer to Posting Etiquette under the Forum Guidelines.
I think it is just 'finger trouble'. Someone hit the 6 button instead of 5 when entering the co-ordinates. But I like your suggestion, Tom. Stuart |
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