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Old 07-05-2017, 09:13 PM
bigjoe (JOSEPH)
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Join Date: Nov 2010
Location: sydney
Posts: 1,363
Quote:
Originally Posted by Tropo-Bob View Post
The Shadow certainly was close to the Pole. Europa's shadow goes over Jupiter on Monday evening (8.20 to 10.46). I will watch with interest to see where its shadow fall in comparison. Clouds permitting ( I only saw the Shadow for 2 minutes last night, then cloud, then rain ); I will also look for Europa reappearing after Transit at 9.20ish.

I noticed last night that Ganymede could be detected reappearing outside of Jupiter's disc some 2 minutes earlier than the prediction. Anybody know how these predictions work? Is it the middle of the moons disc crossing the Jupiter's edge that is used for the prediction? I am guessing so and that is why I could see the edge of the moon clear Jupiter earlier than the predicted time.
Weather permitting Bob, I'm going to roll out the 254mm Sct on the Celestron AVX mount.. just got it from Bintel ,and have a good look at it, and also those unusually bright bluish Festoons!
Cheers bigjoe.
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