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Re: [APML] RG200 Alert

To: astro-photo@seds.org
Subject: Re: [APML] RG200 Alert
From: Joe Pedit <pedit@email.unc.edu>
Date: Wed, 07 Aug 2002 11:19:52 -0400
Organization: UNC-CH
References: <006b01c23ddd$217b7140$b6843f42@mpd> <3D512CFF.3006E445@dashmail.net>
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 > Michael Greger wrote:

> Kodak apparently announced a change in this film a few months back.

> westergren wrote:
> Has anyone else observed or sensed a change in RG200? Don

Thanks for the warning.  The spectral sensitivity curves for Royal Gold 
200 and 400 have changed dramatically.  Old and new curves are compared at:
http://www.unc.edu/~pedit/royalgold0200oldnew.gi
http://www.unc.edu/~pedit/royalgold0400oldnew.gif
The improved formulations are less sensitive at 656 nm.  :(
Joe

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Follow-Ups:
- Re: [APML] RG200 Alert
  - From: Bruce Glagola <glagola@aps.anl.gov>
- Re: [APML] RG200 Alert
  - From: Philip Perkins <philip@astrocruise.com>
- Re: [APML] RG200 Alert
  - From: "westergren" <westergren@netzero.net>

References:
- [APML] RG200 Alert
  - From: "westergren" <westergren@netzero.net>
- Re: [APML] RG200 Alert
  - From: Michael Greger <mgreger@dashmail.net>

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