Spirit cleaner? |
Spirit cleaner? |
Jun 18 2007, 06:44 AM
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#1
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Senior Member Group: Members Posts: 1887 Joined: 20-November 04 From: Iowa Member No.: 110 |
I've been keeping an eye on the sundial images looking for signs of a cleaning event. I've noticed some changes in the latest to be downloaded although they may be due to changes in the lighting.
A : clean patch at top of circle streak at bottom B : increased contrast from dust left behind next to mirror C : clean patch next to wire Also note the missing clumps of dust on the deck A broader view show a contrast between sol 1221 and 1227 http://207.7.139.5/mars/spirit/navcam/2007...I4P0165L0M1.JPG http://207.7.139.5/mars/spirit/navcam/2007...00P1914L0M1.JPG Has anyone heard if there has been a change in the power levels? |
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Jul 1 2007, 10:43 PM
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#2
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Senior Member Group: Members Posts: 4256 Joined: 17-January 05 Member No.: 152 |
From the latest Planetary Society report, this description of the sol 1224 cleaning event:
QUOTE "This [dust-cleaning event] was interesting, different from cleaning events we've had in the past," Squyres said... . "In the past, we've had cleaning events that took place when we were on a summit or a ridgecrest and in the past they have sometimes occurred at night. The rover will shut down in the afternoon with dirty solar panels and wake up in the morning with clean solar panels and we have no idea exactly when it happened. In this particular instance, the rover was awake and busy and active when the event happened so we can pinpoint the timing of it. It happened at 1:20 pm in the afternoon local solar time. Of course, we are now down on a low spot, not up on a ridgecrest of anything. So our speculation –- this is pure speculation at this point – but our speculation is that we took a direct hit from a dust devil. We don't know that. But we are in place where dust devils happen and it's prime time for dust devil activity, the time of day when dust devils seem to be most active."
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Jul 8 2007, 09:42 AM
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#3
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Senior Member Group: Members Posts: 2922 Joined: 14-February 06 From: Very close to the Pyrénées Mountains (France) Member No.: 682 |
From the latest Planetary Society report, this description of the sol 1224 cleaning event: Sorry All, I was away and missed the whole thing, DD & big storm. May be you've talked about it but as I'll need 2 days before been updated on the whole UMSF , I'd better ask this question now : can the event that have cleaned Spirit as described by SS be a premice of the Big Storm instead of a "normal" dust cleaning event ? -------------------- |
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