9 July 1998 Hobby-Eberly Telescope low-resolution spectrograph: optical design
Author Affiliations +
Abstract
The Hobby Eberly Telescope (HET) is a revolutionary large telescope of 9.2 meter aperture, which is currently undergoing commissioning at McDonald Observatory. First light was obtained on December 11, 1996. Scientific operations are expected in 1998. The Low Resolution Spectrograph (LRS, a collaboration between the University of Texas at Austin, the Instituto de Astronomia de la Universidad Nacional Autonoma de Mexico, Stanford University, Ludwig-Maximillians-Universitat, Munich and Georg-August-Universitat, Gottingen) is a high throughput, imaging spectrograph which rides on the HET tracker at prime focus. The LRS will be the first HET facility instrument. The unique nature of the HET has led to interesting optical design solutions for the LRS, aimed at high performance and simplicity. The LRS is a grism spectrograph with a refractive collimator and a catadioptric f/1.4 camera. The beam size is 140 mm, resulting in resolving powers between (lambda) /(Delta) (lambda) approximately 600 and 3000 with a 1 arcsec wide slit. The LRS optics were designed and partially fabricated at the IAUNAM. We present a description of the LRS specifications and optical design, and describe the manufacturing process.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Francisco J. Cobos Duenas, Francisco J. Cobos Duenas, Carlos Tejada, Carlos Tejada, Gary J. Hill, Gary J. Hill, F. Perez G., F. Perez G., } "Hobby-Eberly Telescope low-resolution spectrograph: optical design", Proc. SPIE 3355, Optical Astronomical Instrumentation, (9 July 1998); doi: 10.1117/12.316823; https://doi.org/10.1117/12.316823
PROCEEDINGS
9 PAGES


SHARE
RELATED CONTENT

Low-resolution spectrograph for LAMOST
Proceedings of SPIE (August 15 2000)
A multipurpose fiber-fed VPHG spectrograph for LAMOST
Proceedings of SPIE (June 27 2006)
Very high-resolution spectroscopy: the ESPRESSO optical design
Proceedings of SPIE (September 23 2012)
Hobby-Eberly Telescope low-resolution spectrograph
Proceedings of SPIE (July 08 1998)

Back to Top