Micropupil-based near-infrared imaging spectrograph

Thomas M. Herbst

doi:10.1117/12.317337

21 August 1998 Micropupil-based near-infrared imaging spectrograph

Thomas M. Herbst

Proceedings Volume 3354, Infrared Astronomical Instrumentation; (1998) https://doi.org/10.1117/12.317337
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

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.

Citation Download Citation

Thomas M. Herbst "Micropupil-based near-infrared imaging spectrograph", Proc. SPIE 3354, Infrared Astronomical Instrumentation, (21 August 1998); https://doi.org/10.1117/12.317337

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