FPCSFITS - Einstein FPCS Events Files
The FPCS photon event data were originally released on CD-ROM in June 1991 by the HEASARC group at NASA/GSFC. The FPCS was a Bragg spectrometer on Einstein whose purpose was to obtain high-resolution (E/delta E = 100 - 1000) spectra of cosmic X-ray sources in the 0.2 - 3 keV range.
The name of the source. The FITS keyword `OBJECT`.
The start time of this observation. FITS keywords `DATE-OBS` and `TIME-OBS`.
The stop time of this observation. FITS keywords `DATE-END` and `TIME-END`.
The beginning major frame in 40.96s bins since launch. FITS keyword `MJFBEG1`.
The Right Ascension in degrees. FITS keyword `RA`.
The Declination in degrees. FITS keyword `DEC`.
The galactic longitude, calculated from the given RA and Dec.
The galactic latitude, calculated from the given RA and Dec.
Nominal energy of the observation in keV. FITS keyword `ENERGY`.
Nominal Bragg Angle in degrees. FITS keyword `BRAGGANG`.
Instrument detector number, either 1 or 2. FITS keyword `DETECTOR`.
Number of events in this observation. The number of rows in the second extension of the FITS file.
Title of the observation. FITS keyword `OBSTITLE`.
FITS filename. Each FPCSFITS database entry has one FITS file associated with it.