A BATSE Earth-occultation catalog of 0.03-1.8 MeV gamma-ray source spectraand light curves for phases 1-3 (1991-1994)

Using the powerful Earth-occultation technique, long-term, nearly continuou s monitoring of the entire low-energy gamma-ray sky is now possible with th e advent of BATSE, the Burst and Transient Source Experiment on board the C ompton Gamma Ray Observatory (CGRO). In this paper, we present a catalog of 34 moderately strong gamma-ray sources measured by BATSE. It consists of 0 .03-1.8 MeV photon spectra averaged over weeks and months, and light curves of the 35-200 keV flux, with 1 day resolution, covering the first three ph ases of the CGRO mission (1991 May through 1994 October). These results hav e been obtained using the JPL Enhanced BATSE Occultation Package (EBOP) dev eloped under the CGRO Guest Investigator Program. The EBOP concept and appr oach are also described in some depth. This paper presents highlights extra cted from a large EBOP database which has now been archived at the Compton Observatory Science Support Center (COSSC). This database contains a comple te record of similar to 1200 daily source count rates in 14 energy channels along with the corresponding Poisson and systematic errors for 64 sources, including 30 not described here. An interface to XSPEC is included in the archive allowing conversion from count rates to photon fluxes. This paper t herefore serves also as a reference and entree into the archive and provide s an index and guide for those investigators using the EBOP system and data base for their respective scientific investigations.