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From: jay@npois.UUCP (Anton Winteroak)
Newsgroups: net.astro
Subject: re How many photons
Message-ID: <470@npois.UUCP>
Date: Wed, 4-Dec-85 09:29:34 EST
Article-I.D.: npois.470
Posted: Wed Dec  4 09:29:34 1985
Date-Received: Thu, 5-Dec-85 08:58:25 EST
Organization: ATTIS, Neptune, NJ
Lines: 6


	The magnitude of the sun is -26.8, so divide by 2 again. The      
magnitude of Pluto is 13.8, not fifteen. So basically you could expect
a one meter dish to collect 1 or 2 visable photons per second from an
object of magnitude 26.