Re: [APML] O.T.: infrared

["Michael Stecker" <mstecker@dslextreme.com>]

Hello Paul, Roland and Chuck:

Thanks for your help regarding the wavelengths for infrared.  I guess the
correct approximate range from near to far infrared is 700 nm - 1 mm.  When
an astronomer says he is imaging in the "sub-millimeter" range is this
another term for the far infrared?


Michael Stecker
mstecker@dslextreme.com

My Web Site:
http://www.homestead.com/mstecker/index.html (INDEX)
http://www.homestead.com/mstecker/astrogallery.html (Astroimage Index)
http://www.homestead.com/mstecker/placesindex.html (Places Index)



----- Original Message ----- 
From: "Paul M. Rybski" <rybskip@idcnet.com>
To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
Sent: Monday, July 07, 2003 1:17 AM
Subject: RE: [APML] O.T.: infrared


> Dear group,
>
>       As a simplification for my introductory astronomy students, I
> use the following wavelengths for the infrared:
>
> Photographic IR -- 700-900 nm (7000-9000 Angstroms)
>
> Near IR -- 900-10,000 nm (0.9-10 microns)
>
> Middle IR -- 10,000-100,000 nm (10-100 microns)
>
> Far IR -- 100,000-1,000,000 nm (100-1000 microns)
>
> Paul Rybski, Physics, UW-Whitewater
>
>
> >According to the chart at Lawrence Berkeley Labs
> >(http://www.lbl.gov/MicroWorlds/ALSTool/EMSpec/EMSpec2.html), that's
about
> >right, but I don't think that "photographic" infra-red extends that far.
> >
> >Kodak hi-speed infrared reaches to +/- 925nm.
> >http://www.kodak.com/global/en/professional/support/techPubs/f13/f13.pdf
> >
> >I suspect CCDs range all over the place.
> >
> >Rich
> >
> >
> >
> >-----Original Message-----
> >From: astro-photo-bounces@seds.org
> >[mailto:astro-photo-bounces@seds.org]On Behalf Of Michael Stecker
> >Sent: Sunday, July 06, 2003 22:35
> >To: APML (posts)
> >Subject: [APML] O.T.: infrared
> >
> >
> >Hello group:
> >
> >Does anyone know the range for infrared in wavelengths?  I have found
> >variable numbers quoted and would like to print the correct range on my
> >infrared photography web page.  One source said 700 nm to 2 mm, which
seemed
> >quite large and did not match the other examples displayed graphically.
> >
> >
> >Michael Stecker
> >mstecker@dslextreme.com
> >
> >My Web Site:
> >http://www.homestead.com/mstecker/index.html (INDEX)
> >http://www.homestead.com/mstecker/astrogallery.html (Astroimage Index)
> >http://www.homestead.com/mstecker/placesindex.html (Places Index)
> >
> >
> >
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> >
> >
> >
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>
> ________________________________________
> Paul M. Rybski, Ph.D.
> Associate Professor and former Chair, Dept. of Physics, and
> Director, Whitewater Observatory
> Goodhue 320
> University of WI-Whitewater
> Whitewater, WI  53190-1790
>
> Office FAX:     (262) 472-5633
> Email address:  rybskip@uww.edu
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