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

Probably the explanation. Thanks.

Doug

On Sep 4, 2009, at 11:42 AM, Randy Muller wrote:

> On Fri, Sep 4, 2009 at 9:55 AM, Douglas Fairbairn<dgfairbairn@No-Spam
> > wrote:
>> 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?
>
> Ganymede has an albedo of .43. It is certainly darker than the light
> tan colored belts on Jupiter, and I think it would look "black"
> compared to them in a small telescope.
> ---
>
> 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