Calibration Access and Data Handbook

next up previous contents
Next: Ground calibration Up: RGS_LINCOORD Previous: Purpose   Contents


As the RGS is a dispersive instrument, where the wavelength of an event is determined by the position at which it strikes the detector following grating reflection, accurate knowledge of the instrumental geometry is fundamental. Grating geometry is held in header keywords; and the geometry of individual CCD detectors in the binary table.

Michael Smith 2011-09-20