Classic AIPS
World Coordinate Systems
The eight most commonly-used projections of classic AIPS may be computed using the
worldpos
and
worldpix
subroutines written by Bill Cotton and Eric Greisen of NRAO. They are
SIN: Orthographic projection
TAN: Tangent plane projection
ARC: Zenithal equidistant projection
NCP: North celestial pole projection
GLS: Sanson-Flemsteed sinusoidal projection
MER: Mercator projection
AIT
: Hammer-Aitoff equal area all-sky projection
STG: Stereographic projection (zenithal orthomorphic)
Last updated 22 February 1999 by
Doug Mink
,
Harvard-Smithsonian Center for Astrophysics Telescope Data Center
[
WCSTools WCS
]
[
SAOimage WCS
]
![[WCSTools]](wcsicon.gif)
[SAOimage WCS]
