August 29, 2007, HiRISE release |
August 29, 2007, HiRISE release |
Guest_AlexBlackwell_* |
Aug 29 2007, 07:15 PM
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#1
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Guests |
August 29, 2007, HiRISE release
Interesting new image of the Arsia Mons pit. The polar pit gullies image is pretty good, too. |
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Sep 19 2007, 12:04 AM
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#2
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Member Group: Members Posts: 428 Joined: 21-August 06 From: Northern Virginia Member No.: 1062 |
Well, it all depends on how big of a camera you want to send there. I think HiRISE is mostly diffraction-limited, and it's mirror is 50cm, I think. If you want to double the resolution, you have to double the size of the mirror, or get closer to the surface. I don't think NASA would like the latter option very much, so you're stuck with a larger mirror.
HiRISE's max resolution is near 20-30cm, although I think there's some pixel-blurring at the highest resolution (I haven't studied the optical system, and I'm no optical engineer anyways, but this is from my memory). Anyways, assuming you would want a 5cm resolution, you'd need to send a 2m mirror! I can't see that happening for a long while yet, HiRISE resolution is good enough for 99% of the things we could think of, I rarely have seen anyone asking for much higher. I could see another HiRISE being sent before they send another higher-resolution (As I understand, there's another HiRISE camera that's half-built on the ground, it's not out of the realm to send another one there, just thought you'd like to know that.) Anyways, just thought I'd through in my $.02 |
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