82
SECTION 8. WORLD COORDINATE SYSTEMS
Table 8.3.
Reserved Celestial Coordinate Algorithm Codes
Default
Properties1
Code
φ0
θ0
Projection Name
Zenithal (azimuthal) projections
◦
◦
0
90
§5.1.1
Zenithal perspective
AZP
0◦
◦
90
§5.1.2
Slant zenithal perspective
SZP
0◦
◦
90
§5.1.3
Gnomonic
TAN
0◦
◦
90
§5.1.4
Stereographic
STG
0◦
◦
90
§5.1.5
Slant orthographic
SIN
0◦
◦
90
§5.1.6
Zenithal equidistant
ARC
0◦
◦
90
§5.1.7
Zenithal polynomial
ZPN
0◦
◦
90
§5.1.8
Zenithal equal-area
ZEA
0◦
◦
90
§5.1.9
Airy
AIR
Cylindrical projections
0◦
◦
0
§5.2.1.
Cylindrical perspective
CYP
0◦
◦
0
§5.2.2
Cylindrical equal area
CEA
0◦
◦
0
§5.2.3
Plate carrīe
e
CAR
0◦
◦
0
§5.2.4
Mercator
MER
Pseudo-cylindrical and related projections
0◦
◦
0
§5.3.1
Samson-Flamsteed
SFL
0◦
◦
0
§5.3.2
Parabolic
PAR
0◦
◦
0
§5.3.3
Mollweide
MOL
0◦
◦
0
§5.3.4
Hammer-Aitoff
AIT
Conic projections
0◦
θa
§5.4.1
Conic perspective
COP
0◦
θa
§5.4.2
Conic equal-area
COE
0◦
θa
§5.4.3
Conic equidistant
COD
0◦
θa
§5.4.4
Conic orthomorphic
COO
Polyconic and pseudoconic projections
0◦
◦
0
§5.5.1
Bonne's equal area
BON
0◦
◦
0
§5.5.2
Polyconic
PCO
Quad-cube projections
0◦
0◦
§5.6.1
Tangential spherical cube
TSC
0◦
◦
0
§5.6.2
COBE quadrilateralized spherical cube
CSC
0◦
0◦
§5.6.3
Quadrilateralized spherical cube
QSC
HEALPix grid projection
0◦
◦
2
0
§6
HEALPix grid
HPX
1
Refer to the indicated section in reference [12] for a detailed description.
2
This projection is defined in reference [22].
FITS Standard
