These data are from the Compton GRO EGRET team. Data are from all pointings
of the EGRET instrument in the verification phase and phase 1-4 of the Compton
mission. The maps exist in energies 30-100 MeV, 100-100000 MeV, and
as a multi-dimensional, 10 channel survey. For the multi-dimensional
survey, channels 1-3 comprise energies less than 100 MeV, and channels
4-10 comprise energies greater than 100 MeV. Note that the energies
are not uniformly split among the channels.
The EGRET 3D map is comprised of ten channels with the following
energy ranges:
Channel 1 30-50 MeV
Channel 2 50-70 MeV
Channel 3 70-100 MeV
Channel 4 100-150 MeV
Channel 5 150-300 MeV
Channel 6 300-500 MeV
Channel 7 500-1000 MeV
Channel 8 1000-2000 MeV
Channel 9 2000-4000 MeV
Channel 10 4000-10000 MeV
The default two dimensional image for the EGRET 3D survey is an average
of Channels 4 - 10 (energies greater than 100 MeV). Provenance: EGRET Instrument team, NASA Goddard Space Flight Center. This is a service of NASA HEASARC.