Contains:  Solar system body or event
Mars 17 Sep 2018 - Aurorae Sinus Animation - Nth Up, Seb Lukas

Mars 17 Sep 2018 - Aurorae Sinus Animation - Nth Up

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Description

Animation of nine WinJUPOS composites taken at dusk on 17 Sep 2018. Each one covers nine minutes of continuous imaging. Half an hour run between 6:21 and 6:54 pm local Canberra time.

Seeing was pretty good early in the session but deteriorated around 6:40 due to arrival of high level cloud (which impacted resolution somewhat). There is a slight decrease in disk size with Mars shrinking by half a second from 14 Sep.

Aurorae Sinus, Argyre, Solis Lacus and rising Tharsis Ridge are all on view with very deep shadow cast by a long orographic cloud west of Arsia Mons. The cloud was first detected in Mars Express images four days earlier and indicates prevailing wind direction in that region:

https://www.space.com/42257-strange-mars-cloud-on-mars-photos.html

https://www.esa.int/spaceinimages/Images/2018/10/Mars_elongated_cloud_17_September

To compile this clip I've used processing workflow from 14 Sep but had to tweak sharpening and colour settings to match the two. North is on top in this view.

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