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I've removed the "description" since it's an article masquerading as a category description.
Gamma-ray detectors have come a long way, but the quest for better angular resolution (and therefore source identification) and spectral resolution (for more information on source behavior) is a continuing activity. Gamma-ray detectors are meant to measure the same things detectors at other wavelengths measure, but the challenge of working in this difficult energy range makes more demands on instrument developers than most other fields. Future detectors are beginning to use more advanced solid-state technology to overcome some of these problems and provide large, sensitive detectors which will further establish gamma-ray astronomy as an integral part of astrophysical research.