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Visibility of Mt. Whitney from Mt. Hamilton
1909
Publications of the Astronomical Society of the Pacific
Preserved Fulltext
Publications of the Astronomical Society, &c. 29 objective to the slit. The slit of the spectrograph and the plate-holders are placed in the focal plane of the forty-foot objective, upon a concrete pier in the observatory, near the south side. The grating and the lens, which serves as both collimator and camera lens, are mounted upon another pier
doi:10.1086/121880
fatcat:unj2ovtdd5hdzenn35btuww224