Abstract
A new calibration of the spectrograph at the Mount Wilson 150-foot Tower Telescope demonstrates that all reported solar Doppler rates to date measured at λ5250.2 with this instrument are too high by a factor of 0.55%.
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Snodgrass, H.B., Howard, R. & Webster, L. Recalibration of Mount Wilson Doppler measurements. Sol Phys 90, 199–202 (1984). https://doi.org/10.1007/BF00153796
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DOI: https://doi.org/10.1007/BF00153796