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Perseverance valley
RoverDriver
post Jul 24 2017, 02:02 PM
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QUOTE (PDP8E @ Jul 23 2017, 09:42 PM) *
Hi Fred,
The originals have that bright 'half moon' in the lower third of the frames (which I think you chopped off)
What is that bright area?


It is caused by the dust of times. ;-) The small hood we have in front optical element only partly occludes the Sun. Therefore, even when the Sun is outside the field of view it will illuminate the dust which causes diffusion and enters the optical path. Most of the dust was accumulated around Sol 1200+ (2007) but during the years the wide have cleaned up the front elements quite a bit.

Paolo


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marsophile
post Jul 30 2017, 02:07 AM
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https://mars.nasa.gov/mer/mission/status.html#opportunity

Looks like Oppy has insisted on a two-week vacation during Solar Conjunction!
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fredk
post Aug 1 2017, 03:20 PM
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Catching up on some night sky imaging from 4784. Here's a stack of three frames to increase the S/N by sqrt(3):
Attached Image

I don't recognize the field...
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Deimos
post Aug 1 2017, 04:22 PM
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Taurus, just below pointy end of the Hyades. Kinda random. A rare night comm pass allowed free astronomy, but no moons were up. Still useful as practice and will add a night opacity datum..
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marsophile
post Aug 1 2017, 07:40 PM
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http://www.planetary.org/explore/space-top...nce-valley.html

Monthly MER Update from the Planetary Society. Also has a nice star photo.

I'm wondering what all the proper motion streaks are, especially the sideways ones. Meteors in the Mars atmosphere?
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fredk
post Aug 1 2017, 08:08 PM
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Thanks, Deimos.

Marsophile, the steaks directed from 11 o'clock to 5 o'clock are stars trailing during the exposure. Everything else should be cosmic ray hits.
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djellison
post Aug 2 2017, 05:38 PM
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Here's the field as calculated by Astrometry.net
( http://nova.astrometry.net/user_images/1693971#annotated )

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marsophile
post Aug 5 2017, 04:14 AM
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http://qt.exploratorium.edu/mars/opportuni...Z0P2543L2M1.JPG

Near-perfect layering?
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Phil Stooke
post Aug 5 2017, 06:31 AM
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My guess is that it's an erosional texture as seen in the MI images from the same sol.

Phil



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... because the Solar System ain't gonna map itself.
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monty python
post Aug 9 2017, 05:55 AM
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I guess, since oppy moved immediately after conjunction, the auto mode reset she had was no big deal.
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marsophile
post Aug 12 2017, 03:50 AM
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http://qt.exploratorium.edu/mars/opportuni...00P1956L0M1.JPG

This image may provide some perspective on the channels and their relationship to the surrounding landscape.
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atomoid
post Aug 15 2017, 12:31 AM
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sol4809 MI stitch, with bonus anaglyph highlighting the obligatory ICE stitching artifacts.
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jvandriel
post Yesterday, 01:33 PM
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The Navcam L0 view on Sol 4816.

Jan van Driel

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jvandriel
post Yesterday, 07:39 PM
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Mi cam view taken on Sol 4809-4810.

Jan van Driel

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Phil Stooke
post Yesterday, 10:53 PM
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This is Jan's 4816 panorama reprojected into a roughly maplike geometry to give a view of the surroundings. The lower right (southeast) corner is still bad in this version. The tracks cross a small crater.

Phil

Attached Image


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