Precision Radial Velocities And Residual Problems With Reticon Arrays

B. Campbell; G. A. H. Walker; R. Johnson; T. Lester; S. Yang; J. Auman

doi:10.1117/12.965863

1 January 1981 Precision Radial Velocities And Residual Problems With Reticon Arrays

B. Campbell, G. A. H. Walker, R. Johnson, T. Lester, S. Yang, J. Auman

Proceedings Volume 0290, Solid-State Imagers for Astronomy; (1981) https://doi.org/10.1117/12.965863
Event: Solid State Imagers for Astronomy, 1981, Cambridge, United States

Abstract

A program of precision radial velocity measurements using a RL1872 F/30 Reticon as detector and absorption lines of HF for reference (see Campbell and Walker 1979) is being pursued at both CFHT and at DAO, Victoria. While the long term accuracy of the technique will depend on the ability to duplicate and control the state of the HF gas in the absorption cell, oe can achieve a velocity precision in a single observation of a strong-lined star at 10 Å/mm dispersion, of ~15 ms^-1 at a s/n ~1200. This corresponds to a displacement ~2.10^-2 of a 15μ diode spacing. The critical instrumental and calibration techniques are discussed, in particular the temperature stability of the array, photometric calibration of the individual diodes and the measurement of individual diode to diode spacings.

Citation Download Citation

B. Campbell, G. A. H. Walker, R. Johnson, T. Lester, S. Yang, and J. Auman "Precision Radial Velocities And Residual Problems With Reticon Arrays", Proc. SPIE 0290, Solid-State Imagers for Astronomy, (1 January 1981); https://doi.org/10.1117/12.965863

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