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#235520 - 29/09/2004 00:42 Is this a new photo trick?
SE_Sport_Driver
carpal tunnel

Registered: 05/01/2001
Posts: 4903
Loc: Detroit, MI USA


An image acquired March 30, 2004, by the Mars Global Surveyor and released Monday, Sept. 27, 2004, shows a dark dot identified as the rover Spirit next to giant Bonneville Crater and the thin dark line of its tracks leading back to its lander on the planet. The picture was made by rolling the entire spacecraft to produce sharper images. The process adjusts the rotation rate of the spacecraft to match the ground speed under the camera.
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Brad B.

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#235521 - 29/09/2004 00:56 Re: Is this a new photo trick? [Re: SE_Sport_Driver]
gbeer
carpal tunnel

Registered: 17/12/2000
Posts: 2665
Loc: Manteca, California
Seems to be legit.

http://planetary.org/news/2004/spirit_tracks_moc_0927.html

there are more sites if you google news for mars bonneville.
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Glenn

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#235522 - 29/09/2004 01:10 Re: Is this a new photo trick? [Re: gbeer]
SE_Sport_Driver
carpal tunnel

Registered: 05/01/2001
Posts: 4903
Loc: Detroit, MI USA
I figured it was legit, I was just wondering if it's a new technique that NASA came up with.

From your link:
Quote:
So-called "PROTO" imaging is now relatively routine. But in order to eke out the most possible resolution from the Mars Orbiter Camera, Malin Space Science Systems added another component of motion. "The 'c' in 'cPROTO' stands for planetary motion compensation. While Mars Global Surveyor is pitching, rolling, and moving along its orbit, Mars is rotating underneath it (just as Earth is rotating right now, as you read this, such that the Sun, Moon, and stars appear to move in the sky). The pitch and roll of Mars Global Surveyor are timed in such a way as to account for the rotation of Mars, as well as the desired image resolution and target location."


Edited by SE_Sport_Driver (29/09/2004 01:12)
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Brad B.

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#235523 - 29/09/2004 02:41 Re: Is this a new photo trick? [Re: SE_Sport_Driver]
canuckInOR
carpal tunnel

Registered: 13/02/2002
Posts: 3212
Loc: Portland, OR
Quote:
I was just wondering if it's a new technique that NASA came up with.

Dunno. In less fancy language, it sounds like they're "just" getting rid of motion blur on the fly, so they get a crisper image that needs less filtering as a result.

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#235524 - 29/09/2004 03:03 Re: Is this a new photo trick? [Re: canuckInOR]
mlord
carpal tunnel

Registered: 29/08/2000
Posts: 14484
Loc: Canada
Oh, you mean they're "panning" as they shoot the photos? Like sports photographers have been doing for decades?

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#235525 - 29/09/2004 10:19 Re: Is this a new photo trick? [Re: mlord]
ashmoore
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Registered: 24/08/1999
Posts: 564
Loc: TX
Except that they are spending billions of dollars to do it
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#235526 - 29/09/2004 17:33 Re: Is this a new photo trick? [Re: mlord]
TigerJimmy
old hand

Registered: 15/02/2002
Posts: 1049
Yep, panning at over 100 miles per second, by remote control, in 6 or 7 dimensions (3 spacecraft translations and rotations, plus the planet rotation)... A tiny fraction of a percent error means you miss the whole thing. Just knowing where the goddamn thing is accurately enough to do this is amazing.

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#235527 - 29/09/2004 17:53 Re: Is this a new photo trick? [Re: TigerJimmy]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31578
Loc: Seattle, WA
Yeah, the sports photography metaphor is correct, except backwards. It's more like the wide receiver running downfield, with a telephoto camera in one hand, trying to capture a long-exposure photo of his mom sitting in the top row of the stadium seats. While trying to catch a pass with the other hand. Oh, and while the entire stadium is rotating end-over-end in relation to the field.
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#235528 - 29/09/2004 19:35 Re: Is this a new photo trick? [Re: tfabris]
RobotCaleb
pooh-bah

Registered: 15/01/2002
Posts: 1866
Loc: Austin
while eating chunky soup

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#235529 - 30/09/2004 01:08 Re: Is this a new photo trick? [Re: RobotCaleb]
FireFox31
pooh-bah

Registered: 19/09/2002
Posts: 2494
Loc: East Coast, USA
LOL @ tfabris and l0ser. That's a mental picture perfect for a Canon commercial or something. Or a Campbells commercial?!
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FireFox31
110gig MKIIa (30+80), Eutronix lights, 32 meg stacked RAM, Filener orange gel lens, Greenlights Lit Buttons green set

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#235530 - 30/09/2004 02:17 Re: Is this a new photo trick? [Re: TigerJimmy]
gbeer
carpal tunnel

Registered: 17/12/2000
Posts: 2665
Loc: Manteca, California
Quote:
Yep, panning at over 100 miles per second, by remote control, in 6 or 7 dimensions


The only fly in the ointment is that after getting the photo you have to play catchup to get the next. Thus bypassing a bunch or real estate.
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Glenn

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