Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5492...94h&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
1
Scientific paper
The Hobby-Eberly Telescope (HET) is a revolutionary large telescope of 9.2 meter aperture, located in West Texas at McDonald Observatory. The HET operates with a fixed segmented primary and has a tracker which moves the four-mirror corrector and prime focus instrument package to track the sidereal and non-sidereal motions of objects. The HET has been taking science data for five years, but the image quality and primary mirror stability have been far from specifications. Work over the past two years has improved performance significantly, and demonstrated site-seeing limited images of 0.8 arcsec., showing that the telescope will meet all specifications. The performance of the HET is discussed in detail. The first phase of HET instrumentation includes three facility instruments: the Low Resolution Spectrograph (LRS), the Medium Resolution Spectrograph (MRS), and High Resolution Spectrograph (HRS). The current status of the instruments is described. Upcoming near infrared capabilities for the LRS and MRS are also discussed.
Hill Gary J.
MacQueen Phillip J.
Ramsey Lawrence W.
Shetrone Matthew D.
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