OH airglow suppressor for the SUBARU Telescope: OHS for SUBARU

Toshinori Maihara; Fumihide Iwamuro; Shin Oya; Hiroyuki Tsukamoto; Donald N. B. Hall; Lennox L. Cowie; Alan T. Tokunaga; Andrew J. Pickles

doi:10.1117/12.176748

1 June 1994 OH airglow suppressor for the SUBARU Telescope: OHS for SUBARU

Toshinori Maihara, Fumihide Iwamuro, Shin Oya, Hiroyuki Tsukamoto, Donald N. B. Hall, Lennox L. Cowie, Alan T. Tokunaga, Andrew J. Pickles

Author Affiliations +

Proceedings Volume 2198, Instrumentation in Astronomy VIII; (1994) https://doi.org/10.1117/12.176748
Event: 1994 Symposium on Astronomical Telescopes and Instrumentation for the 21st Century, 1994, Kailua, Kona, HI, United States

Abstract

A specially designed faint object spectrograph in the near-IR region from 1 to 2 micrometers is proposed for the Japanese National Large Telescope: SUBARU. The proposed instrument called OHS for SUBARU is kind of a pre-optics system capable of eliminating most of intense OH airglow emission lines from the incident beam in the J- and H-passbands. The detectivity for objects in the faintest end is supposedly enhanced with this spectroscopic filter system by removing nearly 95% of the natural sky background: the non-thermal night airglow emission. The sensitivity gain in terms of limiting magnitude in these wavelength bands is expected to be 1 to 1.5 mag, depending on the modes of observations. The expected performance of the prototype OHS when attached to SUBARU will also be presented.

Citation Download Citation

Toshinori Maihara, Fumihide Iwamuro, Shin Oya, Hiroyuki Tsukamoto, Donald N. B. Hall, Lennox L. Cowie, Alan T. Tokunaga, and Andrew J. Pickles "OH airglow suppressor for the SUBARU Telescope: OHS for SUBARU", Proc. SPIE 2198, Instrumentation in Astronomy VIII, (1 June 1994); https://doi.org/10.1117/12.176748

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