Posted on 25/03/2015 by emily
Imhotep up – CometWatch 20 March
This single frame NAVCAM image was taken on 20 March 2015 at a distance of 81.7 km from the centre of Comet 67P/Churyumov-Gerasimenko. The image scale of the original 1024 x 1024 pixel image is 7 m/pixel and the image measures 7.1 km across; a cropped, processed version is shown below.
From this orientation we have a great view across the Imhotep region on the ‘underside’ of the comet’s large lobe, providing additional context for the close flyby images of 14 February. The annotated diagram below points to the approximate regions covered by the NAVCAM and OSIRIS flyby images, including the image featuring Rosetta’s shadow (bottom right image).
In this orientation, the boundary between Imhotep and Ash can be seen towards the right of the comet’s large lobe. Apis is towards the bottom right, and includes the region with the sharp shadow.
Part of the comet’s small lobe can be seen to the far right of the image, the cliffs of Hathor largely in the shadow cast by the large lobe.
Meanwhile jets of cometary material can be seen rising from the nucleus; in this orientation to the top and right of the image.
The original 1024 x 1024 pixel image for 20 March is provided below: