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  1. #1
    Drew's Avatar
    Drew Guest

    Default A planet, a moon, a shadow, and a spot



    Jupiter just overtook Mars in my favorite astronomical objects
    category. I stayed up late to catch the Great Red Spot and my first
    Ganymede shadow transit. I had thought that being in the darker
    northern polar region and being so close to the planet's edge would
    make Ganymede's shadow difficult to see. Boy, was I pleasantly
    surprised.

    I took this image at about 7:35am UT via an ED80/9mmOrtho/Digital
    Rebel. Ganymede's shadow is at top left, Ganymede is leaving Jupiter's
    disk at top right (looks like a bump), and there's the GRS at lower
    center...

    http://www.m33.org/images/jup1.jpg

    -Drew


  2. #2
    Dave Mitsky's Avatar
    Dave Mitsky Guest

    Default A planet, a moon, a shadow, and a spot

    Drew,

    I witnessed the reappearance of Io from eclipse at 2:33 UT, the
    beginning of Ganymede's transit at 5:18 UT and the start of the shadow
    transit at 6:42 UT through the ASH 17" f/15 classical Cassegrain at 162
    and 202x on Monday night/Tuesday morning.

    Dave Mitsky


  3. #3
    Dave Mitsky's Avatar
    Dave Mitsky Guest

    Default A planet, a moon, a shadow, and a spot

    Drew,

    I witnessed the reappearance of Io from eclipse at 2:33 UT, the
    beginning of Ganymede's transit at 5:18 UT and the start of the shadow
    transit at 6:42 UT through the ASH 17" f/15 classical Cassegrain at 162
    and 202x on Monday night/Tuesday morning.

    Dave Mitsky


 

 

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