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[Centaur]

The shadows of the Galilean satellites #1 Io and #3 Ganymede will be simultaneously transiting Jupiter during the night of 2020 AUG 14-15.

Photos and descriptions of the transits would be welcome additions to this thread.

My related data and graphics can be found at www.CurtRenz.com/jupiter.html

[Paulie pchris00]

Watching it right now. I don't have any images worth sharing, but I've seen a couple of really good ones. Despite poor seeing all night, I thought I had a pretty good view until I saw those images.

[Centaur]

Aug 14, 2020 23:11:19 GMT -6 Paulie pchris00 said:

Watching it right now. I don't have any images worth sharing, but I've seen a couple of really good ones. Despite poor seeing all night, I thought I had a pretty good view until I saw those images.

Glad you got to see it, Paulie. There will be more dual shadow transits on AUG 22, SEP 14 & OCT 17.

[Paulie pchris00]

I was set up and ready to observe before 9:00 PM last night, but Ganymede had started its transit well before that. I did not time the rest of the events, but they were all observed up to 1:01 AM, when Jupiter was about to disappear behind a tree from my location. Using a Dobsonian telescope, I could have easily worked around the tree, but all that was left to observe was Io's shadow leaving the giant planet, and the shadow was already near the limb. Around 9:40 PM, as Ganymede's shadow was was getting further from the limb after ingress, I thought I saw the Great Red Spot rotating into view, south of Ganymede's shadow. After a few more minutes GRS was very evident, and stayed roughly south of Ganymede's shadow while they were both in sight. Seeing was not very good during these events, nut it's been a very long time since I've had an observation of the Jupiter system.


I got no images worth sharing, but Joe said that I could include his image showing Ganymede's shadow and GRS, so I have attached the file, along with Curt's predicted times of the Galilean events.

Attachments:

[Paulie pchris00]

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