NSSDCA ID: ASXR-00025
Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)
This two CD-ROM set constitutes a machine readable form of the data from the Einstein HRI detector. The HRI was one of two imaging detectors onboard the Einstein Observatory, which was a satellite-based imaging X-ray telescope with sensitivity over a 0.2-3.5 keV energy range; it operated from November 1978 to April 1981. These HRI images differ from the IPC in that they contain the number of photons detected in each pixel (without any smoothing or background subtraction), therefore allowing the user to apply counting statistics directly to the images. Einstein was essentially a pointed (as opposed to scanning) mission, observing some 870 targets with the High Resolution Imager (HRI). During 53 of these exposures the Objective Grating Spectrometer (OGS) was inserted in the telescope beam, and the HRI was used to readout the resulting spatially-dispersed spectrum of the X-ray source. These two disks contain: 870 images resulting from those pointings; a list of all sources reliably detected in the images; auxiliary data files; documentation about the images and their use; and image display software for a variety of systems. The data files on these disks conform to the Flexible Image Transport System (FITS). The CDs have been mastered according to the International Organization for Standardization (ISO) Standard 9660, Level 1.
Questions and comments about this data collection can be directed to: Dr. Cynthia Y. Cheung
Name | Role | Original Affiliation | |
---|---|---|---|
Dr. Michael R. Garcia | Data Provider | Center for Astrophysics | garcia@cfa.harvard.edu |