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The First 100 Years
:: Instruments
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Instruments
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Spectroheliograph
Views: 5040
Nebular Spectrometer
Views: 3411
Nebular Spectrometer after 1952 fire
Views: 3264
Wehner
Views: 4086
Wehner
Views: 4077
Wehner
Views: 4072
Moon camera
Views: 3947
Rotary photometer
Views: 4142
Rotary photometer
Views: 4249
