Observation by Peter Tickner: Jupiter rare double transit with Callist...

Uploaded by

Peter Tickner

Observer

Peter Tickner

Observed

2026 Mar 17 - 20:30

Uploaded

2026 Mar 19 - 13:40

Objects

Jupiter

Equipment

Player One Uranus-M
Player One Neptune 664-C
Sunobserver eADC
Chroma luminance and Optalong 685 nm IR pass filters
Orion Optics 450 mm f/15 Dall-Kirkham (at 440 mm)
Mesu E200 Mk 2 Mount

Location

urban Berkshire

Target name

Jupiter with Callisto and Io

Title

Jupiter rare double transit with Callisto

About this image

It has taken me quite a while to work through over 275 Gb of catured data when conditions were varying from poor to good between and during each video. I reverted to replacing my ADC and this was also the first time I had a replacement diffraction ring in place to the specification I had ordered rather than the one Orion had first supplied.

In the end these results were from the best 15% of the videos that were usable. Io can be seen in all the images and its shadow as well in the lower right image. More importantly is the transit of Callisto, which is so dark it looks like its own shadow. Callisto is rarely at the right angle to transit so prominently across Jupiter so it was good to have clear enough skies to capture it.

Peter

Files associated with this observation

j2026-03-17-various_UT_IR_L_Tickner.png (1.3 MB)

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