Re: [APML] Fuji NPH400 tests posted

[Bert Katzung <katzung@pacbell.net>]

Hi Grant:
All of the major elements emit light at certain wavelengths. I've summarized
some information about emission lines in various astro sources on my web
site at
http://www.astronomy-images.com/sources_sensors.htm
Click on the "Emission Lines" item at the end of the first paragraph.
Hope this helps...
Bert

Bert Katzung
katzung1@home.com
www.astronomy-images.com

----- Original Message -----
From: "Grant" <GB1029@inter-linc.net>
To: <astro-photo@seds.org>
Sent: Friday, October 19, 2001 7:17 PM
Subject: Re: [APML] Fuji NPH400 tests posted


> At 02:16 AM 10/20/01 +0100, you wrote:
>
>  >>and your double cluster shot is very nice.
> Thanks Philip.  There's always room for improvement of course.
>
> And thanks for the explanation of different wavelengths.  couple
questions. You
> said "M42 is extremely bright and has a large amount of broadband light
> overlaying the ionized regions."
> What exactly is broadband light?  And are ionized regions & OIII one in
the
> same?  You'll
> have to excuse my lack of technical knowledge regarding emission lines.
So
> many different
> aspects to this hobby.  I just can't seem to ingest it all fast enough...
>
> Grant
>
>
>
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