ABEL: a near-IR grism spectrometer and camera for the 1.5-m TCS

Francisco Garzon; Jose Luis Rasilla; F. Javier Fuentes; Mary Barreto; Luis Cavaller-Marques; Peter L. Hammersley; A. Prieto

doi:10.1117/12.317326

21 August 1998 ABEL: a near-IR grism spectrometer and camera for the 1.5-m TCS

Francisco Garzon, Jose Luis Rasilla, F. Javier Fuentes, Mary Barreto, Luis Cavaller-Marques, Peter L. Hammersley, A. Prieto

Author Affiliations +

Proceedings Volume 3354, Infrared Astronomical Instrumentation; (1998) https://doi.org/10.1117/12.317326
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

ABEL is currently at the beginning of the design phase at the Instituto de Astrofisica de Canaris. The instrument will be equipped with the 256 X 256 Santa Barbara Research Corporation InSb FPA which will provide a working spectral range from 1 to 5 microns. For image mode three different platescales are envisaged: 0.2 inch/pixel, to be used in the thermal IR to avoid detector saturation; 0.4 inch/pixel, which will allow for sufficient sampling of the median seeing limited images below 2.5 microns; and 1.0 inch/pixel, which will be the standard in spectroscopic operations and during wide field imaging. For spectroscopy, a standard moderate spectral resolution of about 400 will be available in the JHKLM windows, which will be all fully covered in a single exposure. Additional higher spectral resolution is under consideration, which at least double. ABEL will offer a wide variety of slit widths and shapes, ranging from 1 inch to 3 inches, and including dog-leg shape. The thermal design is based on a two stages closed cycle cooler, the first stage being used for the passive optics while the second will cool directly the detector to about 30 to 40 K. The instrument is planned for the late 99 and a major cooperation with the Osservatorio de Arcetri is underway. ABEL will be installed in the f/13.8 Cassegrain focus of the 1.5m Telescopio Carlos Sanchez, at the Spanish Observatorio de El Teide, in the canarian island of Tenerife.

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Francisco Garzon, Jose Luis Rasilla, F. Javier Fuentes, Mary Barreto, Luis Cavaller-Marques, Peter L. Hammersley, and A. Prieto "ABEL: a near-IR grism spectrometer and camera for the 1.5-m TCS", Proc. SPIE 3354, Infrared Astronomical Instrumentation, (21 August 1998); https://doi.org/10.1117/12.317326

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KEYWORDS

Cameras

Spectroscopy

Galactic astronomy

Sensors

Spectral resolution

Spectroscopes

Telescopes

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