Back to the Abstract

	1 Introduction
	2 Basic concepts
	3 Celestial coordinate systems
	4 Alternate FITS image representations
	5 Spherical map projections
	6 Support for the AIPS convention
	7 Discussion
	8 Summary
	Appendix A: Projection aliases
	Appendix B: Mathematical methods
	Appendix C: The slant orthographic projection
	References