From: Milton Aupperle <milton@outcastsoft.com>

Date: June 20, 2006 11:52:22 AM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Jupiter through my 6" refractor

Hi Alan;

Nice sharp images. Did you happen to take notice of what the "Pixel Noise  Percentage" was after staking?

One thing you might want to try out when doing your next LRGB imaging session on the 10" scope is shooting your Luma image normal, and then shoot some or all of your color filtered images in 2x2 binned modes. This is done all the time in DSO imaging.

Since your using the RGB channels to basically colourize the Luma channel, you likely won't lose much color detail at all. And the binned modes will give you about 4x as much light, which means you can run faster frame rates or use less gain. And using less gain will be a good thing no matter what you do.

Just a thought..

Milton J. Aupperle

President

ASC - Aupperle Services and Contracting

Mac Software (Drivers, Components and Application) Specialist

#1005 - 815 14th Avenue. S.W.

Calgary Alberta Canada T2R0N5

1-(403)-229-9456

milton@outcastsoft.com

www.outcastsoft.com

On 19-Jun-06, at 8:46 PM, Alan Friedman wrote:

Here is an image taken through my 6" A-P refractor using a Baader FFC to yield a

focal length of about 3.5 meters.

http://groups.yahoo.com/group/Astro_IIDC/files/Planetary/jupiter061206.jpg

I probably could have used a little more power. Seeing was quite good - Jupiter

was just under 34 degrees in elevation.

These images were stacked and aligned in Astro IIDC using manual alignment. I

used multiple alignment points and averaged the results - it made little or no

difference at this focal length, the alignment done on the center of the disk worked

very well. Processing was done in Adobe Photoshop CS2.

Phil - the way to avoid the crispy planet edge is to use PS or similar program which

allows you to select just the areas you want to process. This is the most powerful

feature of this program.

best wishes -

Alan