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Recalibration of Mount Wilson Doppler measurements

โœ Scribed by H. B. Snodgrass; R. Howard; L. Webster

Publisher
Springer
Year
1984
Tongue
English
Weight
218 KB
Volume
90
Category
Article
ISSN
0038-0938

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โœฆ Synopsis

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 25250.2 with this instrument are too high by a factor of 0.55%.

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โœ Barry J. Labonte; Robert Howard ๐Ÿ“‚ Article ๐Ÿ“… 1981 ๐Ÿ› Springer ๐ŸŒ English โš– 970 KB

Possible sources of systematic error in solar Doppler rotational velocities are examined. Scattered light is shown to affect the Mount Wilson solar rotation results, but this effect is not enough to bring the spectroscopic results in coincidence with the sunspot rotation. Interference fringes at the