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Two views of Jupiter 1.25 hours apart, Niall MacNeill

Two views of Jupiter 1.25 hours apart

Acquisition type: Lucky imaging
Two views of Jupiter 1.25 hours apart, Niall MacNeill

Two views of Jupiter 1.25 hours apart

Acquisition type: Lucky imaging

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Description

On a rare clear night I firstly imaged Saturn, but the seeing was very poor at perhaps 3/10 (4-4.5 arc secs). It was so bad that I threw away the data. I was doing some trials on deep sky and noticed that the guiding was getting better. By the time I swung back to Jupiter after midnight the seeing was really good and continued to get better.
I started with an RGB run, before CH4 and then went back to RGB for a 2nd time,

The results show very good resolution pole to pole and limb to limb. After the recent atrocious seeing this was a welcome surprise.
At the Central Meridian in the first RGB capture, where the large oval protrudes from the NEB into the NTrZ, there is both a bright break out, but perhaps more interestingly a small bright red spot, that perhaps the good seeing and better resolution makes visible. It is also visible in the 2nd RGB image on the p limb, so it is not an artefact. In this latter image a remarkable red-brown ring can be seen at the boundary of the SEB and the STrZ, just on the f side of the Central Meridian.

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Two views of Jupiter 1.25 hours apart, Niall MacNeill
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