From: Milton Aupperle <milton@outcastsoft.com>

Date: October 10, 2011 10:36:35 AM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Ganymede transit!

Hi Jim;

On 10-Oct-11, at 9:05 AM, matt carmine wrote:

Seeing was not as good as it had been earlier this weekend but the Ganymede transit made it worthwhile to drag myself up and outside at 1:50 in the morning.  The transit was just underway the shadow was just a small bite on the perimeter of Jupiter so I went back inside to brew some fresh coffee.

http://dl.dropbox.com/u/4852049/Jupiter%26GanymedeOct10.jpg

The f/45 exercise is probably futile given the seeing conditions around the Great Lakes but it did seem to show surface features of Ganymede more clearly!

I concur. It sure looks like you are picking up markings on Ganymede.

Jim

PS  Milton, those diagonal markings form your last email I assumed were just noise from maxing out the gains at f/45.  Last night I cleaned all the accumulated dew crap from the mirrors and temps were a lot warmer so there was no dewing of the secondary to fight and much better light transmission.

Actually, if you look closely at the image, you'll see the lines run through the entire image, including your background and text. So  I'm quite sure something was whacked when the JPEG was generated.

TTYL..

Milton Aupperle.