RE: [APML] OT: Deep M81 (12 Hours) (My image...really!)

["Richard Klappal" <klappal@xnet.com>]

Thumbsplus image cataloging/manip/indexing supports both fts and sbig as
well as almost everything else and has 16-bit support.  It would allow you
to convert to/from either of them.  www.cerious.com

Std Disclaimer...

Richard Klappal

-----Original Message-----
From: astro-photo-bounces@seds.org
[mailto:astro-photo-bounces@seds.org]On Behalf Of Kevin Wigell
Sent: Saturday, 12 March, 2005 10:09
To: Discussion of Film Astrophotography
Subject: Re: [APML] OT: Deep M81 (12 Hours) (My image...really!)


Rob, CCDSharp will only read FITS or SBIG formats, correct? How do you get
your file into one of those formats so that CCDSharp can read it?

Kevin Wigell
www.kwastronomy.com

----- Original Message -----
From: "Robert Gendler" <robgendler@worldnet.att.net>
To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
Sent: Saturday, March 12, 2005 8:04
Subject: Re: [APML] OT: Deep M81 (12 Hours) (My image...really!)


> Bobby,
> Deconvolution algorthms are complex mathematical formulas that
> try to approximate what the image would look like without the blurring
> effects brought on by seeing, mechanical and optical issues. Its much
> more than a sharpening filter. It does an amazing job of tightening an
> image
> but does come at a cost. The image needs to have good S/N as decon
> will bring out noise in the image, particularly the background (mottling).
> The stars will also acquire halos with aggressive decon. One thing I
> should
> mention is that for an image to respond well to decon it must be
> oversampled
> which is another way of saying it needs to be taken at long focal length,
> at
> least 2000mm. There are ways to deal with the noise such as making a layer
> with a nondecon frame to replace the background and stars. The Lucy
> Richardson algorthms IMO are the best. I use CCDSharp (now free off
> the SBIG site). I hope this helps.
>
>
> Rob Gendler
> email: robgendler@att.net
> Web Site: http://www.robgendlerastropics.com


_______________________________________________
Astro-Photo mailing list
Astro-Photo@seds.org
http://seds.org/mailman/listinfo/astro-photo

_______________________________________________
Astro-Photo mailing list
Astro-Photo@seds.org
http://seds.org/mailman/listinfo/astro-photo