oa MNASSA : Monthly Notes of the Astronomical Society of South Africa - Visual magnitudes
|Article Title||Visual magnitudes|
|© Publisher:||Astronomical Society of Southern Africa (ASSA)|
|Journal||MNASSA : Monthly Notes of the Astronomical Society of South Africa|
|Publication Date||Jan 1945|
|Pages||65 - 72|
|Keyword(s)||Classification of brightness, Extrapolation, Measuring brightness, Photographic plates, Photometers, Ptolemy's catalogue, Spectroscope, Thermal effects and Visual magnitudes|
Our society has always had a live variable star section and at least two presidential addresses have been given on variable stars. This somewhat limits the field that is still open to me, but it also suggests that a subject related to variable stars would be acceptable.
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