Another total solar eclipse!

Blog the previous nights viewing. Link to images on the gallery or simply describe what you observed the night before. Leave the technical and howto in another forum.
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Another total solar eclipse!

Post by rwilkinson » Wed Apr 08, 2015 8:40 pm

I watched another solar eclipse last night - but not on Earth, this one took place on Jupiter!
It was a little hazy down here, so no good for Messier-object hunting, however the still air was perfect for planetary observing, so I fitted a 10mm eyepiece to the 130P (giving 65x magnification) and had a brilliant view of Jupiter and three of its moons.
Soon after 9pm I saw the fourth moon emerge from the edge of the planet's disc; I looked it up and discovered that this was Ganymede.
Then around ten o'clock I noticed a tiny black dot appear on Jupiter's "surface", moving slowly in from the edge: this turned out to be the shadow of Ganymede, so of course that shaded portion of the planet would be experiencing a total solar eclipse! 8-)

I think this is only the second time I've observed a shadow transit on Jupiter: the first was a couple of years ago when trying out the Big Bolton Telescope (16"), so I was quite surprised that I could see it with only a 5" mirror at my disposal. :D

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