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The First 100 Years
:: Instruments
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Instruments
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Spectroheliograph
Views: 4475
Nebular Spectrometer
Views: 2978
Nebular Spectrometer after 1952 fire
Views: 2840
Wehner
Views: 3675
Wehner
Views: 3679
Wehner
Views: 3648
Moon camera
Views: 3544
Rotary photometer
Views: 3689
Rotary photometer
Views: 3807