Micropupil-based near-infrared imaging spectrograph

Details Micropupil-based near-infrared imaging spectrograph Micropupil-based near-infrared imaging spectrograph

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3354..720h&link_type=abstract

Proc. SPIE Vol. 3354, p. 720-728, Infrared Astronomical Instrumentation, Albert M. Fowler; Ed.

Astronomy and Astrophysics

Astrophysics

2

Scientific paper

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.

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