[AZ-Observing] Re: Jupiter's Moons and Shadows - Wednesday
- From: Tom Polakis <tpolakis@xxxxxxx>
- To: az-observing@xxxxxxxxxxxxx
- Date: Wed, 26 Aug 2009 23:39:36 -0400
Nope, two moons and two shadows. Here's an image when Jupiter was only 20
degrees above my southeastern horizon.
http://www.pbase.com/polakis/image/116565698
Left to right; Ganymede's shadow, Europa's shadow, Ganymede at dead center
(which appears dark in contrast with the region between the equatorial belts).
Now look at 1 o'clock from Ganymede; almost touching it is the Europa, at the
same latitude as its shadow.
Tom
---- "Wayne (aka Mr. Galaxy)" <mrgalaxy@xxxxxxxx> wrote:
> 15480 Empire Rd.
> Benson, AZ 85602
> hm ph: 520-586-2244
> Correction, Tom, there are _three_ moon shadows (unless I'm seeing things!)
> on the surface of Jupiter, all different sizes. The middle one is the
> smallest, the preceding one is mid-size and the following one is the largest.
> I hope you (or someone else) are going to take an image. I really wish I had
> a tracking telescope with a camera! I am looking at them right now (about
> 8:10pm AZ time) with my 13- and 25-inch scopes. The seeing isn't wonderful,
> but it has its good moments. Our moon is showing lots of nice detail, too,
> since it is up higher where the seeing is better. I feel like Paul Lind where
> I just happen upon these events. It's exciting!
>
> Clear skies,
> Wayne (aka Mr. Galaxy)
>
>
> ---------- Original Message ----------
> From: Tom Polakis <tpolakis@xxxxxxx>
> To: AZ-Observing@xxxxxxxxxxxxx
> Subject: [AZ-Observing] Jupiter's Moons and Shadows - Wednesday
> Date: Wed, 26 Aug 2009 22:58:03 -0400
>
> It's about 8 p.m. on Wednesday, and there are two moons and their shadows
> currently transiting Jupiter. Ganymede and Europa are very close to each
> other at the central meridian, followed by Europa's shadow and Ganymede's
> shadow, which is just entering the eastern limb.
>
> We will be able to follow the moon transits until 10 p.m., and Ganymede's
> shadow will be on the disc until 11:30 p.m.
>
> Tom
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