An astronomy camera for low background applications in the 1.0 to 2.5 μm spectral region

Author

Kaki, Said A. ; Baily, G.C. ; Hagood, Robert W.

Author_Institution

Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA

Volume

36

Issue

1

fYear

1989

fDate

2/1/1989 12:00:00 AM

Firstpage

941

Lastpage

945

Abstract

A description is given of a low-background astronomy camera system based on a short wavelength (1.0-2.5 μm) 128×128 focal plane array. The camera is designed to accept either a HgCdTe array for the 1-2.5 μm spectral region or an InSb array for the 3-5 μm spectral region. A cryogenic folded optical system is utilized to control excess stray light along with a cold eight-position filter wheel for spectral filtering. The camera head and electronics will also accept a 256×256 focal plane. Engineering evaluation of the system and two engineering runs at the JPL Table Mountain Observatory have been completed. System design, engineering performance, and sample imagery are presented

Keywords

astronomical instruments; cameras; infrared astronomy; infrared detectors; semiconductor counters; 1.0 to 2.5 micron; 3 to 5 micron; HgCdTe array; InSb; astronomy camera; cryogenic folded optical system; eight-position filter wheel; excess stray light; low background applications; Astronomy; Cameras; Control systems; Cryogenics; Lighting control; Optical control; Optical filters; Stray light; Systems engineering and theory; Wheels;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.34580

Filename

34580