From: "Alan Friedman" <alan@greatarrow.com>

Date: April 27, 2005 8:10:30 AM MDT

To: Astro_IIDC@yahoogroups.com

Subject: copernicus

Hi all -

I went back into the lunar folder and looked again at Milton's two mosaic images of the 

lunar disk. I'm amazed that you could create these from 12 or 13 frames at 1500mm focal 

length. It took me nine frames to cover the full disk of the sun at 600mm FL. I guess it 

helps to have the sun lighting only a portion of the moon's surface!

I also uploaded an image of the copernicus region taken at prime focus of my 10" mak 

(3600mm fl). 

http://groups.yahoo.com/group/Astro_IIDC/files/Lunar/copernicus_wide.jpg

The base frame of this mosaic was created using the stacking feature in Astro IIDC - the 

four corners were sharpened with separate stacks in Keith's image stacker aligned on 

features in each of these regions. I used a red filter with the B&W webcam to stabilize the 

seeing, which I estimated at 5/10 at the eyepiece.

Alan