IPCPHOT - Einstein IPC Photon Event Data
Start time of observation in the format yy.ddd
Stop time of observation in the format yy.ddd
The RA reference point value of the FITS image file. The right ascension (1950.0) in decimal degrees of the center of the image.
The DEC reference point value of the FITS image file. The declination (1950.0) in decimal degrees of the center of the image.
Galactic Longitude of field center of the FITS image file.
Galactic Latitude of field center of the FITS image file.
The detector roll angle in degrees
The number of photons collected during the exposure.
Satellite On-Time (sec)
Observation mode of current observation (point, slew or scan)
Information on the nature of the target. Entries include catalog names (e.g., 4U0248-85) and observer's notes.
FITS keyword: HISTORY
The file name of the original XPR file used to create the FITS file. The XPR files conform to a standard of Ixxxx.XPR in which xxxx is the observation sequence number.
File name of the FITS image file in the database system. The files have the format `ihhmmDdd.xp*`. The letters `hhmm` denote the RA hour and minute. The `D` is either `N` or `S` for North or South, and `dd` is the declination in degrees. The `*` is a letter such as A, B, C, etc., to distinguish the files when the rest of the file name is not unique. This occurs when more than one pointing was made at a given position.