An Efficient Low Resolution and Moderate Resolution Spectrograph for the Hale Telescope

Details An Efficient Low Resolution and Moderate Resolution Spectrograph for the Hale Telescope An Efficient Low Resolution and Moderate Resolution Spectrograph for the Hale Telescope

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982pasp...94..586o&link_type=abstract

Publications of the Astronomical Society of the Pacific, Vol. 94, P. 586, 1982

Astronomy and Astrophysics

Astronomy

266

Scientific paper

A new low-to-moderate resolution spectrograph has been designed and built for the Cassegrain focus of the Hale 5.08- meter telescope. To maximize efficiency, resolution, and wavelength coverage the light is divided into two spectral regions by a dichroic filter behind the entrance slit, after which there are two completely separate spectrographs. The blue spectrograph operates from 3200 Å to 5200 Å while the red one goes from 5200 Å to 10,000 Å. The red detector is an 800 × 800 TI CCD while the blue detector is a 320 × 512 RCA CCD or a Shectrograph image pulse-counting system. A Boksenberg IPCS can also he mounted on the blue camera. The overall efficiency of the Cassegrain telescope, spectrographs, and CCD's combined, ranges from 5% to 13% between 3600 Å and 8200 Å. The spectrograph is usable from 3200 Å to 10,400 Å.

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