FPCSFITS - Einstein FPCS Events Files
The FPCSFITS database is a listing of the Focal Plane Crystal Spectrometer
photon event data. It was created in October 1992 and contains one entry for
each of the 436 FPCS FITS files.
Canizares, C. R., Clark, G. W., Bardas, D., and Markert, T. 1977, "The Curved
Crystal X-Ray Spectrometer for the HEAO-B Satellite," Proc. Soc. Photo-Opt.
Instr. Eng., 106, 154.
This database is a listing of the photon event FITS files on the CD-ROM and
allows access to any of the actual files from within BROWSE. Each entry
contains source names, start and stop times, coordinates, energy, and number
of events in each FITS file.
The data products associated with this database table consist of FITS spectra
and 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
Questions regarding the FPCSFITS database table can be addressed to the
HEASARC User Hotline.
If you have any problems, please consult the help
page or mail firstname.lastname@example.org