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Path: utzoo!linus!decvax!tektronix!tekcad!paulp
From: paulp@tekcad.UUCP
Newsgroups: net.rec.photo
Subject: Re: Query: New VR1000 film - (nf)
Message-ID: <527@tekcad.UUCP>
Date: Thu, 4-Aug-83 22:27:40 EDT
Article-I.D.: tekcad.527
Posted: Thu Aug  4 22:27:40 1983
Date-Received: Fri, 5-Aug-83 13:07:56 EDT
Sender: ricks@tekcad.UUCP
Organization: Tektronix, Beaverton OR
Lines: 30

#R:cbscd5:-37200:tekcad:14300002:000:819
tekcad!paulp    Aug  4 10:25:00 1983

Sky & Telescope in their March 1983 issue reviewed the VR1000 film.
Briefly:
	recorded slightly more stars than Kodacolor 400.  Ektachrome
	did as well with more vivid colors.

	sky fog is a problem.

	wider dynamic range makes it more suitable for nebulae.
	also has better red sensitivity for hydrogen alpha at 6563 A.

	no cooling test was attempted though ambient was 7 F.  best
	guess is it has about the same reciprocity failure as the ASA
	400 emulsions.

	an excellent film for auroras.

Astronomy magazine has probably reviewed the film by now in more detail.

				    Paul Pomes

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