Three-hour animation of Tethys transiting Saturn 6 Sept 2023 (LacailleOz)

Contains: Solar system body or event

Three-hour animation of Tethys transiting Saturn 6 Sept 2023

Revision title: Revision with two additional frames

Fairly good seeing at last allowed me to capture the entire recent transit of Tethys in this gif based on composite images.

For each of the 21 frames, Tethys and the other visible moons were brightened as a layer duplicated below the normally treated planet top layer and then revealed by cutting through a layer mask on the top layer. Thus they appear brighter than reality, but are based on signals received by the camera.

There is a half hour gap in the video part way through as I coped with the dreaded meridian shift, which caused the planet to disappear, not just from the sensor, but also from the finderscope FOV! I had to quickly attach a crude red dot finder to even get into the ballpark!

There is a discontinuity - probably a storm - visible in the cloud bands just north of Tethys, and the shadow of Tethys is also visible. Slight smudges or anomalies on the rings may be artefacts or - just possibly - ring spokes!

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Title: Revision with two additional frames

Description: A problematic meridian shift in the middle of the three hour run meant that I had a 30 minute gap in the original gif, between 1334 UT and 1406 UT. As suggested by Niall, I synthesised two images to fill the gap, using WinJUPOS and the images at the beginning and end of the gap for source data.

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Three-hour animation of Tethys transiting Saturn 6 Sept 2023

Revision title: Revision with two additional frames

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Three-hour animation of Tethys transiting Saturn 6 Sept 2023

Revision title: Revision with two additional frames

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