From: albe albo <richter1956@yahoo.com>

Date: June 5, 2009 6:46:19 PM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] First Jupiter of   2   0   0   9!

Hi,

of course  i think they are real but perhaps not all the pixels variations are caused by signal.

I explain: since in this case we can examine an animation we have the chance to check the difference between each frame.

So there are sudden change in albedo that seems too much for he rotational period of Ganymede.

It could be interesting to separate the signal from the noise.

Anyway... great image from Alan!

TTYL

Alberto

PS: mentime i'm training with airplanes on-the-fly in order to acquire some skill in ISS tracking LOL

Maybe Milton could invent a ultrafast autoguide in order to hook and follow the ISS in realtime...

Miltooon did u hear?

http://dl.getdropbox.com/u/1094920/090524-ISS-Mayer.avi

http://dl.getdropbox.com/u/1094920/Prova-Al-Volo.avi

Da: Milton Aupperle <milton@outcastsoft.com>

A: Astro_IIDC@yahoogroups.com

Inviato: Sabato 6 giugno 2009, 2:16:55

Oggetto: Re: [Astro_IIDC] First Jupiter of 2 0 0 9!

Hi Alberto;

I know Alan Friedman has imaged light / dark patches on Ganymede in
the past:

http://www.geocitie s.com/alanfgag/ ganymede_ detail.jpg

The lower image is the projected image from SNP, and the upper is
from Alan.

The whole thread discussing this is at:

http://tech. groups.yahoo. com/group/ Astro_IIDC/ message/826

So I don't doubt at all that those features in the occultation could
be real.

PS: It's supposed to freaking snow tonight!!

When the #$%:#% does this Global Warming start again? Do we have to
sacrifice Al Gore and David Suzuki to the sun god before it finally
warms up?

TTYL..

Milton Aupperle