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Stellar Spectroscopy at 1.1μ

Zirin, H. (1974) Stellar Spectroscopy at 1.1μ. In: Highlights of Astronomy. International Astronomical Union (IAUH). No.3. Springer Netherlands , Dordrecht, pp. 357-359. ISBN 9789401022132.

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This is a progress report on the program of stellar spectroscopy at 1.1 μ reported on by Vaughan and Zirin (1968) and by Zirin (1971). About 450 plates of about 200 stars have been obtained, using a magnetically focused RCA image converter with the 144" and 72" Palomar coudé cameras, giving dispersion of 8 and 17 Å mm⁻¹ respectively. Most of the plates were taken at the latter dispersion and cover about 300 Å. In good seeing a star with J = 3 is obtained in about 90 min. A tube with a fibre optic back-plate is now in use. Cooling such a tube is difficult because the cathode is held at high voltage. By completely insulating the cold box, we may use dry ice cooling, and 2 h exposures, reaching J = 5, may be made with this ITT tube.

Item Type:Book Section
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Additional Information:© IAU 1974. This research was supported by NASA under NGR 05-002-034.
Funding AgencyGrant Number
NASANGR 05-002-034
Subject Keywords:Main Sequence Star; Double Star; Giant Star; Late Type Star; Strong Emission Line
Series Name:International Astronomical Union (IAUH)
Issue or Number:3
Record Number:CaltechAUTHORS:20201013-155619920
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:106051
Deposited By: George Porter
Deposited On:14 Oct 2020 22:24
Last Modified:16 Nov 2021 18:49

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