NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
An efficient low- and moderate-resolution spectrograph for the Hale telescopeA 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 spectra regions by a dichroic filter behind the entrance slit, after which there are two completely separate spectrographs. The blue spectrograph operates from 3200 A to 5200 A while the red one goes from 5200 A to 10,000 A. The red detector is an 800 x 800 TI CCD while the blue detector is a 320 x 512 RCA CCD or a Shectrograph image pulse-counting system. A Boksenberg IPCS can also be mounted on the blue camera. The overall efficiency of the Cassegrain telescope, spectrographs, and CCD's combined, ranges from 5 percent to 13 percent between 3600 A and 8200 A. The spectrograph is usable from 3200 A to 10,400 A.
Document ID
19820057285
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Oke, J. B.
(California Inst. of Tech. Pasadena, CA, United States)
Gunn, J. E.
(Palomar Observatory Pasadena, CA, United States)
Date Acquired
August 10, 2013
Publication Date
July 1, 1982
Publication Information
Publication: Astronomical Society of the Pacific
Subject Category
Instrumentation And Photography
Accession Number
82A40820
Funding Number(s)
CONTRACT_GRANT: NSF AST-78-24842
CONTRACT_GRANT: NSF AST-77-22615
CONTRACT_GRANT: NGL-05-002-134
CONTRACT_GRANT: NSF AST-80-22279
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available