ROSAT Guest Observer Facility

How is the background map scaled?


The normalization is performed as follows: the observation is split into annuli about the center, the inner two arcmin of data are tossed out, all point sources are tossed out, and the remainder is smoothed. This process serves as a normalization for the predicted background map. NOTICE: If your source is extended, the predicted background map WILL be affected.

button Select another question related to this topic

Select another FAQ topic Select another FAQ topic Return to the ROSAT GOF Return to the ROSAT GOF

Please use the Feedback link if you have questions on ROSAT.

This file was last modified on Friday, 27-Jul-2001 14:59:31 EDT

NASA Astrophysics

  • FAQ/Comments/Feedback
  • Education Resources
  • Download Adobe Acrobat
  • A service of the Astrophysics Science Division (ASD) at NASA/ GSFC

    ROSAT Project Scientist: Dr. Robert Petre

    Responsible NASA Official: Phil Newman

    Privacy Policy and Important Notices.