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Rosetta Blog

CometWatch 2 December

5 Dec 2014, 14:41 UTC
CometWatch 2 December ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0
(200 words excerpt, click title or image to see full post)

This four image mosaic comprises images taken with Rosetta’s NAVCAM on 2 December from a distance of 30.1 km from the centre of Comet 67P/Churyumov-Gerasimenko. The image resolution of the mosaic is about 3.1 m/pixel, and it has been cropped to measure 4.5 x 3.6 km.
Four image NAVCAM mosaic comprising images taken on 2 December 2014. Credits: ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0
Each original 1024 x 1024 pixel frame (provided below) has a scale of 2.6 m/pixel and measures nearly 2.6 km across.
As usual, before interpreting the mosaic, do check the original frames, because the rotation and translation of the comet during the image sequencing makes it difficult to create an accurate mosaic. In this particular instance, some distortions were needed in order to get the images to align, which also resulted in the slightly different image scale.

In this orientation, the smaller of the two comet lobes is towards the left, the larger lobe towards the right.
It provides an almost “face-on” view onto the large depression on the smaller lobe, its boulder-strewn surface albeit enshrouded in shadow. On the other hand, the internal walls are seen in quite some detail. It is thought that Philae’s ...

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