A maskless gamma-ray all-sky imager: BATSE/CGRO

Author

Zhang, S.N. ; Fishman, G.J. ; Harmon, B.A. ; Paciesas, W.S. ; Meegan, C.A. ; Wilson, R.B. ; Finger, M.H. ; Rubin, B.C.

Author_Institution

Univ. Space Res. Assoc., Huntsville, AL, USA

Volume

41

Issue

4

fYear

1994

fDate

8/1/1994 12:00:00 AM

Firstpage

1313

Lastpage

1320

Abstract

The non-collimated detectors of BATSE (Burst And Transient Source Experiment) on the Compton Gamma Ray Observatory (CGRO) can be used as a high sensitivity hard X-ray and low energy gamma-ray all-sky imager in the energy range between 20 keV and 2 MeV. The fluxes from sources in the sky are modulated as the spacecraft orbits the Earth. The CGRO orbital precession further allows sampling of the sky in strips corresponding to the limb of the Earth at any given time. The modulation data are transformed into images by various reconstruction methods. High sensitivity images of location accuracy of about 0.1° and source separation of about 1° are obtained

Keywords

astronomical instruments; gamma-ray astronomy; gamma-ray detection and measurement; 20 keV to 2 MeV; BATSE; CGRO; Compton Gamma Ray Observatory; hard X-ray; low energy gamma-ray; maskless gamma-ray all-sky imager; Earth; Gamma ray detection; Gamma ray detectors; Image sampling; Observatories; Orbits; Space vehicles; X-ray detection; X-ray detectors; X-ray imaging;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.322906

Filename

322906