Next: Abstract
SLALIB -- Positional Astronomy Library
2.4-0
Programmer's Manual
Starlink User Note67.45
P.T.Wallace
12 October 1999
Retrieve hardcopy
Contents
-
Abstract
-
INTRODUCTION
-
LINKING
-
SUBPROGRAM SPECIFICATIONS
-
SLA_ADDET - Add E-terms of Aberration
-
SLA_AFIN - Sexagesimal character string to angle
-
SLA_AIRMAS - Air Mass
-
SLA_ALTAZ - Velocities etc. for Altazimuth Mount
-
SLA_AMP - Apparent to Mean
-
SLA_AMPQK - Quick Apparent to Mean
-
SLA_AOP - Apparent to Observed
-
SLA_AOPPA - Appt-to-Obs Parameters
-
SLA_AOPPAT - Update Appt-to-Obs Parameters
-
SLA_AOPQK - Quick Appt-to-Observed
-
SLA_ATMDSP - Atmospheric Dispersion
-
SLA_AV2M - Rotation Matrix from Axial Vector
-
SLA_BEAR - Direction Between Points on a Sphere
-
SLA_CAF2R - Deg,Arcmin,Arcsec to Radians
-
SLA_CALDJ - Calendar Date to MJD
-
SLA_CALYD - Calendar to Year, Day
-
SLA_CC2S - Cartesian to Spherical
-
SLA_CC62S - Cartesian 6-Vector to Spherical
-
SLA_CD2TF - Days to Hour,Min,Sec
-
SLA_CLDJ - Calendar to MJD
-
SLA_CLYD - Calendar to Year, Day
-
SLA_COMBN - Next Combination
-
SLA_CR2AF - Radians to Deg,Arcmin,Arcsec
-
SLA_CR2TF - Radians to Hour,Min,Sec
-
SLA_CS2C - Spherical to Cartesian
-
SLA_CS2C6 - Spherical Pos/Vel to Cartesian
-
SLA_CTF2D - Hour,Min,Sec to Days
-
SLA_CTF2R - Hour,Min,Sec to Radians
-
SLA_DAF2R - Deg,Arcmin,Arcsec to Radians
-
SLA_DAFIN - Sexagesimal character string to angle
-
SLA_DAT - TAI-UTC
-
SLA_DAV2M - Rotation Matrix from Axial Vector
-
SLA_DBEAR - Direction Between Points on a Sphere
-
SLA_DBJIN - Decode String to B/J Epoch (DP)
-
SLA_DC62S - Cartesian 6-Vector to Spherical
-
SLA_DCC2S - Cartesian to Spherical
-
SLA_DCMPF - Interpret Linear Fit
-
SLA_DCS2C - Spherical to Cartesian
-
SLA_DD2TF - Days to Hour,Min,Sec
-
SLA_DE2H -
to Az,El
-
SLA_DEULER - Euler Angles to Rotation Matrix
-
SLA_DFLTIN - Decode a Double Precision Number
-
SLA_DH2E - Az,El to
-
SLA_DIMXV - Apply 3D Reverse Rotation
-
SLA_DJCAL - MJD to Gregorian for Output
-
SLA_DJCL - MJD to Year,Month,Day,Frac
-
SLA_DM2AV - Rotation Matrix to Axial Vector
-
SLA_DMAT - Solve Simultaneous Equations
-
SLA_DMOON - Approx Moon Pos/Vel
-
SLA_DMXM - Multiply
Matrices
-
SLA_DMXV - Apply 3D Rotation
-
SLA_DPAV - Position-Angle Between Two Directions
-
SLA_DR2AF - Radians to Deg,Min,Sec,Frac
-
SLA_DR2TF - Radians to Hour,Min,Sec,Frac
-
SLA_DRANGE - Put Angle into Range
-
SLA_DRANRM - Put Angle into Range
-
SLA_DS2C6 - Spherical Pos/Vel to Cartesian
-
SLA_DS2TP - Spherical to Tangent Plane
-
SLA_DSEP - Angle Between 2 Points on Sphere
-
SLA_DT - Approximate ET minus UT
-
SLA_DTF2D - Hour,Min,Sec to Days
-
SLA_DTF2R - Hour,Min,Sec to Radians
-
SLA_DTP2S - Tangent Plane to Spherical
-
SLA_DTP2V - Tangent Plane to Direction Cosines
-
SLA_DTPS2C - Plate centre from
and 
-
SLA_DTPV2C - Plate centre from and x,y,z
-
SLA_DTT - TT minus UTC
-
SLA_DV2TP - Direction Cosines to Tangent Plane
-
SLA_DVDV - Scalar Product
-
SLA_DVN - Normalize Vector
-
SLA_DVXV - Vector Product
-
SLA_E2H - to Az,El
-
SLA_EARTH - Approx Earth Pos/Vel
-
SLA_ECLEQ - Ecliptic to Equatorial
-
SLA_ECMAT - Form
Matrix
-
SLA_ECOR - RV & Time Corrns to Sun
-
SLA_EG50 - B1950 to Galactic
-
SLA_EL2UE - Conventional to Universal Elements
-
SLA_EPB - MJD to Besselian Epoch
-
SLA_EPB2D - Besselian Epoch to MJD
-
SLA_EPCO - Convert Epoch to B or J
-
SLA_EPJ - MJD to Julian Epoch
-
SLA_EPJ2D - Julian Epoch to MJD
-
SLA_EQECL - J2000 to Ecliptic
-
SLA_EQEQX - Equation of the Equinoxes
-
SLA_EQGAL - J2000 to Galactic
-
SLA_ETRMS - E-terms of Aberration
-
SLA_EULER - Rotation Matrix from Euler Angles
-
SLA_EVP - Earth Position & Velocity
-
SLA_FITXY - Fit Linear Model to Two
![$[\,x,y\,]$](img20.gif)
Sets
-
SLA_FK425 - FK4 to FK5
-
SLA_FK45Z - FK4 to FK5, no P.M. or Parallax
-
SLA_FK524 - FK5 to FK4
-
SLA_FK52H - FK5 to Hipparcos
-
SLA_FK54Z - FK5 to FK4, no P.M. or Parallax
-
SLA_FK5HZ - FK5 to Hipparcos, no P.M.
-
SLA_FLOTIN - Decode a Real Number
-
SLA_GALEQ - Galactic to J2000
-
SLA_GALSUP - Galactic to Supergalactic
-
SLA_GE50 - Galactic to B1950
-
SLA_GEOC - Geodetic to Geocentric
-
SLA_GMST - UT to GMST
-
SLA_GMSTA - UT to GMST (extra precision)
-
SLA_GRESID - Gaussian Residual
-
SLA_H2E - Az,El to
-
SLA_H2FK5 - Hipparcos to FK5
-
SLA_HFK5Z - Hipparcos to FK5, no P.M.
-
SLA_IMXV - Apply 3D Reverse Rotation
-
SLA_INTIN - Decode an Integer Number
-
SLA_INVF - Invert Linear Model
-
SLA_KBJ - Select Epoch Prefix
-
SLA_M2AV - Rotation Matrix to Axial Vector
-
SLA_MAP - Mean to Apparent
-
SLA_MAPPA - Mean to Apparent Parameters
-
SLA_MAPQK - Quick Mean to Apparent
-
SLA_MAPQKZ - Quick Mean-Appt, no PM etc.
-
SLA_MOON - Approx Moon Pos/Vel
-
SLA_MXM - Multiply Matrices
-
SLA_MXV - Apply 3D Rotation
-
SLA_NUT - Nutation Matrix
-
SLA_NUTC - Nutation Components
-
SLA_OAP - Observed to Apparent
-
SLA_OAPQK - Quick Observed to Apparent
-
SLA_OBS - Observatory Parameters
-
SLA_PA - to Parallactic Angle
-
SLA_PAV - Position-Angle Between Two Directions
-
SLA_PCD - Apply Radial Distortion
-
SLA_PDA2H - H.A. for a Given Azimuth
-
SLA_PDQ2H - H.A. for a Given P.A.
-
SLA_PERMUT - Next Permutation
-
SLA_PERTEL - Perturbed Orbital Elements
-
SLA_PERTUE - Perturbed Universal Elements
-
SLA_PLANEL - Planet Position from Elements
-
SLA_PLANET - Planetary Ephemerides
-
SLA_PLANTE -
![$[\,\alpha,\delta\,]$](img3.gif)
of Planet from Elements
-
SLA_PM - Proper Motion
-
SLA_POLMO - Polar Motion
-
SLA_PREBN - Precession Matrix (FK4)
-
SLA_PREC - Precession Matrix (FK5)
-
SLA_PRECES - Precession
-
SLA_PRECL - Precession Matrix (latest)
-
SLA_PRENUT - Precession/Nutation Matrix
-
SLA_PV2EL - Orbital Elements from Position/Velocity
-
SLA_PV2UE - Position/Velocity to Universal Elements
-
SLA_PVOBS - Observatory Position & Velocity
-
SLA_PXY - Apply Linear Model
-
SLA_RANDOM - Random Number
-
SLA_RANGE - Put Angle into Range
-
SLA_RANORM - Put Angle into Range
-
SLA_RCC - Barycentric Coordinate Time
-
SLA_RDPLAN - Apparent of Planet
-
SLA_REFCO - Refraction Constants
-
SLA_REFCOQ - Refraction Constants (fast)
-
SLA_REFRO - Refraction
-
SLA_REFV - Apply Refraction to Vector
-
SLA_REFZ - Apply Refraction to ZD
-
SLA_RVEROT - RV Corrn to Earth Centre
-
SLA_RVGALC - RV Corrn to Galactic Centre
-
SLA_RVLG - RV Corrn to Local Group
-
SLA_RVLSRD - RV Corrn to Dynamical LSR
-
SLA_RVLSRK - RV Corrn to Kinematical LSR
-
SLA_S2TP - Spherical to Tangent Plane
-
SLA_SEP - Angle Between 2 Points on Sphere
-
SLA_SMAT - Solve Simultaneous Equations
-
SLA_SUBET - Remove E-terms
-
SLA_SUPGAL - Supergalactic to Galactic
-
SLA_SVD - Singular Value Decomposition
-
SLA_SVDCOV - Covariance Matrix from SVD
-
SLA_SVDSOL - Solution Vector from SVD
-
SLA_TP2S - Tangent Plane to Spherical
-
SLA_TP2V - Tangent Plane to Direction Cosines
-
SLA_TPS2C - Plate centre from and
-
SLA_TPV2C - Plate centre from and x,y,z
-
SLA_UE2EL - Universal to Conventional Elements
-
SLA_UE2PV - Pos/Vel from Universal Elements
-
SLA_UNPCD - Remove Radial Distortion
-
SLA_V2TP - Direction Cosines to Tangent Plane
-
SLA_VDV - Scalar Product
-
SLA_VN - Normalize Vector
-
SLA_VXV - Vector Product
-
SLA_WAIT - Time Delay
-
SLA_XY2XY - Apply Linear Model to an
-
SLA_ZD - to Zenith Distance
-
EXPLANATION AND EXAMPLES
-
SUMMARY OF CALLS
-
About this document ...
Next: Abstract
SLALIB --- Positional Astronomy Library
Starlink User Note 67
P. T. Wallace
12 October 1999
E-mail:ptw@star.rl.ac.uk