1887

oa MNASSA : Monthly Notes of the Astronomical Society of South Africa - A simple night sky photometer

 

Abstract

A sketch shows the principle of a simple photometer that should be easily contructible by any amateur. It is similar to the one used by Dufay in his study of the light of the night sky.

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/content/mnassa/2/12/AJA00248266_4764
1943-01-01
2016-12-02
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