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Four sequential images of Venusian nightside by IR2 #4

IR2 Four sequential images of Venusian nightside by IR2 #4

Four sequential pseudo-color images of the Venus' night-side produced by IR2. These images are produced from the IR2 2.26-µm images, acquired on 29 March 2016 at a distance of 0.36 million km. These images were acquired with 4-hour intervals from 07:03 UTC.

In 4 hours, the super-rotating clouds move by ~10 degrees. Such images are numerically derotated to produce intermediate images so that the resultant motion becomes smoother. Deformation, appearance and disapperance of clouds are obvious in this movie. As the mission enters the "nominal" observing phase, we plan to shorten the intervals to 2 hours or even shorter so the high-definition movies will definitely help understanding of the Venus atmosphere.

Data Descriptions

Date/Time 2016-03-29 19:03:30 (UTC)
Inst./Filter IR2, 2.26 µm
Exposure time 6.97 sec
Altitude

364,246 km

Archives (DARTS)

L1b (JPEG, FITS), L2b (JPEG, FITS)

Position of spacecraft

Orbit of AKATSUKI viewed
from above the Sun's north pole

AKATSUKI
Venus
Sun
Earth
Venus