Re: Double shadow transit happening on Jupiter (12:30)

Turns out I did see three black dots - all in the right places per
Starry Nights.... two were shadows and one was Ganymede. So why was
Ganymede dark?

And yes, at the right times, I could also see the other two moons off
the edges of the planet... everything was in its place - just curious
as to why Ganymede looked dark???

Doug

On Sep 3, 2009, at 2:42 PM, Randy Muller wrote:

> The black dots were the shadows of Europa and Ganymede, not Europa and
> Ganymede themselves. Per Steve's message, Europa and Io were not
> transiting, but were off to either side of Jupiter. Ganymede was
> transiting, and was between the two shadows. It was not dark like the
> shadows.
>
> I seems that you did not see Ganymede at all, but only saw two
> shadows.
>
> On Thu, Sep 3, 2009 at 2:07 PM, Douglas Fairbairn<dgfairbairn@No-Spam
> > wrote:
>> I saw this too.... looked very cool....
>>
>> Just explain one thing - when Ganymede and Europa were transiting
>> Jupiter -
>> why did they appear as black dots? why weren't the sunlit? They were
>> sunlit/visible when they were off the limb of the planet....
>>
>> Doug
>>
>>
>> On Sep 3, 2009, at 12:31 AM, Steve Gottlieb wrote:
>>
>>> Yep, 3 discs (all different in appearance) at once on Jupiter are
>>> making a
>>> great sight with Europa and Io close to Jupiter on either side.
>>> Wow.
>>>
>>> Steve
>>>
>>> On Sep 3, 2009, at 12:15 AM, Dana Patchick wrote:
>>>
>>>> I'm with you, Steve. It's a great sight! Even Ganymede is showing
>>>> up
>>>> between the two shadows - and closer to Europa's decidedly
>>>> smaller shadow.
>>>>
>>>> -Dana
>>>>
>>>>
>>>> ----- Original Message ----- From: "Steve Gottlieb"
>>>> <steve_gottlieb@No-Spam>
>>>> To: "TAC mailing list" <tac@No-Spam>
>>>> Cc: "TAC-SAC" <tac-sac@No-Spam>
>>>> Sent: Thursday, September 03, 2009 12:03 AM
>>>> Subject: [TAC] Double shadow transit happening on Jupiter
>>>>
>>>>
>>>>> If anyone's up at midnight -- the shadow's of Europa and
>>>>> Ganymede are
>>>>> both easily visible with Ganymede, itself, transiting. Very cool.
>>>>>
>>>>> Steve
>>>>> ---
>>>>>
>>>>> August 16, 2009: TAC Web Page Updated
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>>>>
>>>> ---
>>>>
>>>> August 16, 2009: TAC Web Page Updated
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>>>
>>> ---
>>>
>>> August 16, 2009: TAC Web Page Updated
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>>
>> ---
>>
>> August 16, 2009: TAC Web Page Updated
>> http://observers.org/TAC.cgi/Announcements/
>> Star Party! CalStar: Sept 17-20: http://www.observers.org/CalStar
>> TAC mailing list - to join, manage, or leave:
>> http://nine.pairlist.net/mailman/listinfo/tac
>>
> ---
>
> August 16, 2009: TAC Web Page Updated http://observers.org/TAC.cgi/Announcements/
> Star Party! CalStar: Sept 17-20: http://www.observers.org/CalStar
> TAC mailing list - to join, manage, or leave: http://nine.pairlist.net/mailman/listinfo/tac

---
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