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Paper: The IAU 2000/2006 Changes to Celestial Reference Systems: a Bluffer’s Guide
Volume: 394, Astronomical Data Analysis Software and Systems (ADASS) XVII
Page: 179
Authors: Wallace, P.
Abstract: No sooner had we all learnt to write “FK5 J2000” next to RA,Decs than the IAU went and changed everything. What are ICRS, BCRS, GCRS, CIRS, TIRS and ITRS? And the CIP and CIO? And the mysterious “quantity s”? There have even been rumours that sidereal time no longer exists. What is going on, and what difference does any of this make to data analysis?
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