Re: [APML] IR [was: M51 RGB (only)]

["Mike Cook, AF9Y" <mwcook@concentric.net>]

This should clear up the question about IR filtering in the SBIG filter
set:

http://www.sbig.com/sbwhtmls/filterannouncement.htm

If you are using the filters made after Oct 22, 1998, then the clear
filter does NOT have IR blocking.

Mike Cook
AF9Y

From:           	"Tony Hallas" <tonyhallas@foothill.net>
To:             	<astro-photo@seds.org>
Subject:        	Re: [APML] IR [was: M51 RGB (only)]
Date sent:      	Mon, 22 Apr 2002 19:12:35 -0700
Send reply to:  	astro-photo@seds.org

> Roland,
> 
>     Are you absolutely sure there is an IR cut-off filter on the SBIG clear filter... I
>     have been using that and the CCD behaves like all the IR is getting through.
> 
>       Tony
> 



Mike Cook, AF9Y
http://www.af9y.com
mwcook@cris.com




--  APML Archives at <http://astro.umsystem.edu/apml/>  ---
             Unsubscribe at <majordomo@seds.org>