XMM-Newton Science Analysis System


cal (cal-3.184) [xmmsas_20070308_1802-6.6.0]

Meta Index / Home Page / Developer's notes / Using CAL in a / General Concepts, Definitions and

Units

Unless explicitly stated otherwise in the routine descriptions below, the CAL makes use of the following units:

Quantity	Unit
energies	eV
wavelengths	nm
angles	radians / arcsecs
physical coordinates	mm
pixel coordinates	unitless - integer pixel numbers in the range $[1, npix]$; $npix$ is number of CCD pixels on the current chip in a given direction
time	elapsed number of seconds since mission reference time
temperature	Kelvin