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Re: [APML] NGC 6914 Tech Pan Tri-color and CCD comparison
Thanks! What type of blue filter are you using?
From: "Volker Wendel" <volker@spiegelteam.de>
To: <astro-photo@seds.org>
Subject: Re: [APML] NGC 6914 Tech Pan Tri-color and CCD comparison
Date sent: Wed, 31 Oct 2001 07:52:49 +0100
Send reply to: astro-photo@seds.org
> Hi Mike,
>
> I have two channels from a tricolor shot made with my astrocamera. Itīs blue
> and red. I will scan it the next days and sent it to the list.
>
> Volker
> www.spiegelteam.de
>
> ----- Original Message -----
> From: "Mike Cook, AF9Y" <mwcook@concentric.net>
> To: <astro-photo@seds.org>
> Sent: Wednesday, October 31, 2001 5:56 AM
> Subject: [APML] NGC 6914 Tech Pan Tri-color and CCD comparison
>
>
> > Chuck Vaughn and I have been comparing NGC6914 CCD and
> > Tech Pan images. Here is a webpage showing both images:
> >
> > http://www.webcom.com/af9y/ngc6914ccd.htm
> >
> > (thanks to BenDaniel for the java tip)
> >
> > One thing that you will notice is that the Tech Pan image has
> > extra blue in the lower half of the image. Chuck believes this
> > is due to the extra UV portion of the spectrum include in the
> > Tech Pan image but not in the CCD. I have my doubts that
> > there would be such an abrupt drop off going from top to
> > bottom.
> >
> > Anyway, we're wondering if anyone out there has another
> > ngc6914 color image for comparison. It would be especially
> > good if anyone else is using a wider blue filter.
> >
> > Thanks,
> >
> >
> >
> >
> >
> > Mike Cook, AF9Y
> > http://www.webcom.com/af9y
> > mwcook@cris.com
> >
> >
> >
> >
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Mike Cook, AF9Y
http://www.webcom.com/af9y
mwcook@cris.com
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