Four years of good SpeX

Details Four years of good SpeX Four years of good SpeX

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5492.1498r&link_type=abstract

Ground-based Instrumentation for Astronomy. Edited by Alan F. M. Moorwood and Iye Masanori. Proceedings of the SPIE, Volume 5492

Astronomy and Astrophysics

Astronomy

7

Scientific paper

SpeX is a cross-dispersed medium-resolution 0.8-5.5 micron spectrograph in operation at the NASA Infrared Telescope Facility (IRTF) on Mauna Kea, Hawaii. The instrument uses prism cross-dispersers and gratings to provide resolving powers of up to R~2000 simultaneously across 0.8-2.4 micron or ~2-5.4 micron. An autonomous infrared slit-viewer is used for object acquisition, guiding, and scientific imaging. The spectrograph employs a 1024x1024 Aladdin 3 InSb array and the imager a 512x512 Aladdin 2 InSb array. Since it was commissioned in June 2000, SpeX has been used for about 45% of all telescope time. We give an overview of the design, followed by details of the use and performance of the Aladdin arrays, observing techniques, maintenance issues and lessons learned.

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