DGT (Directional Gamma-Ray Telescope)

A first-generation (balloon-borne) coded-aperture imaging telescope covering the energy range 160 keV - 10 MeV using an array of BGO scintillators as a detection plane.

It was capable of imaging photons in the 160 keV to 10 MeV energy range.

This was the second successful flight of the instrument and the fourth in the total series.

Balloon launched on: 5/11/1988 at 12:09 utc
Launch site: Columbia Scientific Balloon Facility, Palestine, Texas, US  
Balloon launched by: National Scientific Balloon Facility (NSBF)
Balloon manufacturer/size/composition: Zero Pressure Balloon SF3-424.37-080-NSCR
Balloon serial number: W29.47-2-04
Flight identification number: 1462PT
End of flight (L for landing time, W for last contact, otherwise termination time): 5/12/1988 at 1:53 utc
Landing site: 2 miles N of Burton, Texas, US

• A Search for Transient Phenomena Using a Balloon Borne Gamma-Ray Telescope Bulletin of the American Astronomical Society, Vol. 20, p.1055
• Detection of a flaring low energy gamma ray source  
• Observations of cosmic gamma ray sources and their contribution to the diffuse gamma ray background Ph.D Thesis by Debadarshi Bhattacharya, University of New Hampshire, 1990
• Observations of Galactic and Extra-Galactic Objects in the Low Energy Gamma-Ray Region Bulletin of the American Astronomical Society, Vol. 20, p.1056
• Recent results in the NASA research balloon program 27th Aerospace Sciences Meeting, 1989
• The Directional Gamma-Ray Telescope (DGT) Alan Owens website (now available via Archive.Org)