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The Martian Chronicles

Sols 2489-2491: A Change in the Weather (Observations)

9 Aug 2019, 00:00 UTC
Sols 2489-2491: A Change in the Weather (Observations)
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A Rear Hazcam image used for dust devil monitoring.
Over the weekend, Curiosity successfully dropped off a portion of the Glen Etive drill sample. But for some reason, the sequence was interrupted, so no images of the portion were acquired. Curiosity’s Remote Sensing Mast (RSM), on which ChemCam, both Mastcams, and all four Navcams are mounted, briefly stopped pointing as commanded on sol 2488. The RSM worked well in the tests planned on sol 2489 and downlinked ahead of today’s planning, however. So while the engineers continue to diagnose the issue, such as whether it involves recent changes to the way we heat motors connected to the RSM, we used it again cautiously in the sol 2490 plan. This meant avoiding observations that require us to look up from the surface or deck, to avoid any risk of dust piling up on lenses if the RSM became stuck there.
The net result was that most of the ENV Science Theme Group’s cloud and dust monitoring activities could not be included, as all of them involve using Mastcam or Navcam to look near the horizon or higher up. In the sol 2489 plan, we included some attempted dust devil imaging using ...

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