[APML] Rosette comparison (was New Rosette Mosaic)

["Robert Gendler" <robgendler@worldnet.att.net>]

Title: Re: [APML] New Rosette Mosaic

Thanks to everyone who responded. The file size is only about 25 MB

but with interpolation a very large print can be made, maybe 30 x 30".

I realize that Bobby's file size is much larger but I would bet the resolution

(that's real resolution as in stellar size and raw resolved detail, not just # pixels)

of the CCD image is substantially superior to the film image. This "real" resolution

is the key factor in how much enlargement an image can tolerate.This is easy

to demonstrate if Bobby would post an image cropped like the one below

of NGC 2244 at about 1000 x 1000 res. and a comparison can be made.

http://www.robgendlerastropics.com/RosettebigC.html

Also FYI the CCD image was done with a relatively low resolution CCD camera

having 24um pixels (IMG1024). A comment was made regarding the small size

of the stars in Bobby's film image relative to the CCD image. This is an issue of

image scale and the linearity of CCD and nothing to do with resolution and sharpness.

Rob Gendler
Email: robgendler@att.net
Web site: http://www.robgendlerastropics.com/

----- Original Message -----

From: Larry McManus

To: astro-photo@seds.org

Sent: Wednesday, January 15, 2003 7:35 PM

Subject: Re: [APML] New Rosette Mosaic

Absolutly beautifull. What is the final high res file size and at what dpi?
Larry McManus

on 1/15/03 4:23 AM, Robert Gendler at robgendler@worldnet.att.net wrote:

Hi all,
I've completed a new mosaic project of the Rosette Nebula.
The image is a 9 frame mosaic taken with the 12.5" RC at F7.
Remember to view the larger image and the cropped high res
image of NGC 2244 in the "Tunnel".
http://www.robgendlerastropics.com/Rosettebigpage.html
Enjoy
Rob Gendler
Email: robgendler@att.net
Web site: http://www.robgendlerastropics.com/