Observation by Chris Hooker: Changes in Io's sodium cloud, 10-11 Nove...

Uploaded by

Chris Hooker

Observer

Chris Hooker

Observed

2023 Nov 10 - 21:11

Uploaded

2023 Nov 14 - 08:39

Objects

Jupiter

Equipment

110 mm F/6 ED APO refractor
0.45x imaging focal reducer
Alluxa sodium D-line filter
ZWO ASI178MM camera

Exposure

15 seconds @ F/2.7

Location

Didcot, Oxfordshire

Target name

Jupiter

Title

Changes in Io's sodium cloud, 10-11 November

About this image

Images of Io's sodium cloud captured at intervals on the evening of 10-11 November 2023. Io was close to western elongation from Jupiter, Europa (on the left) was moving in towards a transit and Ganymede (near Jupiter on the right) had just transited and was moving away from Jupiter. The shape of the sodium stream from Io changed noticeably during the three hours covered by these observations. The outer part was initially a narrow streak north of Io's orbital plane, but later broadened to the south and faded slightly, becoming more fan-like in shape. The inward-pointing streak also shows changes of shape.

Using a refractor for these observations eliminates the diffraction spikes from the secondary support of the Newtonian that were intrusive in previous images.

Files associated with this observation

Io Na multi Nov 10-11.png (386.1 kB)

Like this image

Mike Foulkes, Bill Leatherbarrow, Paul G. Abel, Martin Lewis, Peter Mulligan, Gerard Cauchi, Philip Jennings, Steve Knight

Comments

Martin Lewis, 2023 Nov 15 - 13:09 UTC

Groundbreaking work Chris. Keep it up.

Martin

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