The first COMPTEL source catalogue

The imaging Compton telescope COMPTEL aboard NASA's Compton Gamma-Ray Obser vatory has opened the MeV gamma-ray band as a new window to astronomy. COMP TEL provided the first complete all-sky survey in the energy range 0.75 to 30 MeV. The catalogue, presented here, is largely restricted to published r esults. It contains firm as well as marginal detections of continuum and li ne emitting sources and presents upper limits for various types of objects. The numbers of the roost significant detections are 32 for steady sources and 31 for gamma-ray bursters. Among the continuum sources, detected so far , are spin-down pulsars, stellar black-hole candidates, supernova remnants, interstellar clouds, nuclei of active galaxies, gamma-ray bursters, and th e Sun during solar flares, Line detections have been made in the light of t he 1.809 MeV Al-26 line, the 1.157 MeV Ti-44 line, the 847 and 1238 keV Co- 56 lines, and the neutron capture line at 2.223 MeV. For the identification of galactic sources, a modelling of the diffuse galactic emission is essen tial. Such a modelling at this: time does not yet exist; at the required de gree of accuracy. Therefore, a second COMPTEL source catalogue will be prod uced after a detailed and accurate modelling of the diffuse interstellar em ission has become possible.