Emily Lakdawalla • Nov 19, 2014
Remember Comet Siding Spring? Mars Orbiter Mission got photos, too
Back when I wrote my summary of all the Mars missions' observations of comet Siding Spring, there was one mission that had not yet announced whether or not they'd successfully gathered data: ISRO's Mars Orbiter Mission. Amidst the hoopla over the Philae landing last week, they finally released not one but five images of the comet collected by their Mars Colour Camera:
![Mars Orbiter Mission observes comet Siding Spring](https://planetary.s3.amazonaws.com/web/assets/pictures/_1200x801_crop_center-center_82_line/20141119_isro_mom_siding_spring_cropped.jpg 1200w, https://planetary.s3.amazonaws.com/web/assets/pictures/_768x513_crop_center-center_60_line/20141119_isro_mom_siding_spring_cropped.jpg 768w, https://planetary.s3.amazonaws.com/web/assets/pictures/_576x384_crop_center-center_60_line/20141119_isro_mom_siding_spring_cropped.jpg 576w)
I'm not exactly sure what, if anything, to take away from these photos. They are not of very high quality, but part of the problem seems to be a severe amount of JPEG compression applied to them before posting -- I assume the original data look somewhat better. The original image (posted on Twitter November 12) included caption information describing the top center image as showing a comet jet, but I'm quite dubious of that interpretation -- it looks like stray light to me, an imaging artifact. I post them here mostly in order to complete the set of Mars mission observations of comet Siding Spring! I look forward to future science meetings where scientists will present and discuss all the Mars spacecraft work on the comet.
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