Observation by Chris Hooker: Jupiter transits 17th March 2026

Uploaded by

Chris Hooker

Observer

Chris Hooker

Observed

2026 Mar 17 - 21:27

Uploaded

2026 Mar 20 - 21:16

Objects

Jupiter

Equipment

254 mm F/6.3 Newtonian
3x Barlow lens
ZWO ASI462MC camera with IR-cut filter

Exposure

5 ms @ F/19

Location

Didcot, Oxfordshire

Target name

Jupiter

Title

Jupiter transits 17th March 2026

About this image

The orbital planes of Jupiter's moons are now nearly edge-on, which means we see transits of the outer moon Callisto. One such transit occurred on the evening of the 17th, along with a transit and shadow transit of Io. This animation covers a time of 3 hours and 25 minutes, speeded up by around 600 times. Io and Callisto begin their transits almost simultaneously, with Io moving much faster. Io's shadow appears as Io passes the meridian, and is visibly smaller and darker than Callisto as it overtakes it. The seeing was average, and deteriorated badly as Io's shadow left the disc.

99 videos of 1000 frames, recorded at 2-minute intervals and processed in Autostakkert, Registax and PIPP. The animation was also produced using PIPP.

Files associated with this observation

Transits 17 Mar 26 R5 01_pipp.gif (8.4 MB)

Like this image

Dominic Ford, Richard Sargent, Alex Pratt

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