Object - Base class for all AST Objects
Axis - Store axis information
SkyAxis - Store celestial axis information
Channel - Basic (textual) I/O channel
FitsChan - I/O Channel using FITS header cards
Mapping - Inter-relate two coordinate systems
CmpMap - Compound Mapping
DssMap - Map points using Digitised Sky Survey plate solution
Frame - Coordinate system description
CmpFrame - Compound Frame
FrameSet - Set of inter-related coordinate systems
Plot - Provide facilities for graphical output
SkyFrame - Celestial coordinate system description
SpecFrame - Spectral coordinate system description
IntraMap - Map points using a private transformation function
LutMap - Transform 1-dimensional coordinates using a lookup table
MathMap - Transform coordinates using mathematical expressions
MatrixMap - Map positions by multiplying them by a matrix
PcdMap - Apply 2-dimensional pincushion/barrel distortion
PermMap - Coordinate permutation Mapping
SlaMap - Sequence of celestial coordinate conversions
SpecMap - Sequence of spectral coordinate conversions
SphMap - Map 3-d Cartesian to 2-d spherical coordinates
UnitMap - Unit (null) Mapping
WcsMap - Implement a FITS-WCS sky projection
WinMap - Match windows by scaling and shifting each axis
ZoomMap - Zoom coordinates about the origin
AST A Library for Handling World Coordinate Systems in Astronomy