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Proceedings Paper

Micropupil-based near-infrared imaging spectrograph
Author(s): Thomas M. Herbst
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Paper Abstract

This paper describes a near IR imaging spectrograph designed for very high throughput, many spatial pixels, and a wide field of view. Each spectrum contains approximately twenty spectral channels. This balance spatial and spectral coverage is driven by limited detector size and represents an excellent match to many astrophysical problems. We achieve the high efficiency and wide field of view by placing an array of microlenses in the focal plane wheel of a pre-existing camera/spectrograph. A narrow band filter prevents overlap of the individual traces. Ray tracing and preliminary test at the telescope demonstrate the workability of the concept. Initial observations with the imaging spectrograph should take place son after this conference.

Paper Details

Date Published: 21 August 1998
PDF: 9 pages
Proc. SPIE 3354, Infrared Astronomical Instrumentation, (21 August 1998); doi: 10.1117/12.317337
Show Author Affiliations
Thomas M. Herbst, Max-Planck-Institut fuer Astronomie (Germany)

Published in SPIE Proceedings Vol. 3354:
Infrared Astronomical Instrumentation
Albert M. Fowler, Editor(s)

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