From: Milton Aupperle <milton@outcastsoft.com>

Date: February 12, 2010 10:36:38 AM MST

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Sun & Mars

Jim ;

Very nice Solar images.

The actual url for the solar composite is:

http://tech.groups.yahoo.com/group/Astro_IIDC/files/Solar/SolarImages80mmPST%20copyb.jpg

Spaces need to be replaced with "%20" for URL's, which is why I don't have any space in my file names (I use _ ).

The Gain noise in the Solar images surprises me as I would have through you would have had lots of light, even with narrowband filtering. I'm guessing most of them are single frames? That noise will cause all sorts of matching problems and  can screw up the sharpness estimation too.

The Mars image is exceptionally good. Given it's about F62, I'm guessing you used very high gains on that one too?

TTYL..

Milton Aupperle

On 12-Feb-10, at 1:12 AM, jimchung2338 wrote:

After some helpful insight from Alan & Milton, I reprocessed the solar images from the past weekend and they can be found here:

http://tech.groups.yahoo.com/group/Astro_IIDC/files/Solar/SolarImages80mmPST copyb.jpg

Last night the seeing was somewhat better than average and I seized this as my last imaging attempt with Mars this year.  I used an Antares 3x barlow and a barrel extension to yield a true f/62 or 12 m focal length image with my C8.

http://tech.groups.yahoo.com/group/Astro_IIDC/files/Planetary/MarsFeb11.jpg

Jim