casacore::MeasTable Class Reference

MeasTable provides Measure computing database data. More...

#include <MeasTable.h>

Public Types
enum	Types { MERCURY, VENUS, EARTH, MARS, JUPITER, SATURN, URANUS, NEPTUNE, PLUTO, MOON, SUN, BARYSOLAR, BARYEARTH, NUTATION, LIBRATION, N_Types }
	Types to be used in different calls. More...
enum	JPLconst { CAU, GMS, AU, RADS, N_JPLconst }
	Codes for JPL constants: order should be same as in MeasJPL, length less than or equal. More...
Static Public Member Functions
static Bool	useIAU2000 ()
	Selection related data.
static Bool	useIAU2000A ()
	If IAU2000 model, do we use the high precision 2000A model?
static Double	precRate00 (const uInt which)
	Precession related data.
static RotMatrix	frameBias00 ()
	Get the frame bias matrix for IAU2000 model.
static void	precessionCoef (Double T, Polynomial< Double > result[3])
	Generate the precession calculation polynomials for a fixed Epoch T in the result area specified.
static void	precessionCoef2000 (Polynomial< Double > result[3])
	Generate the precession polynomials for IAU2000 system.
static void	precessionCoef1950 (Double T, Polynomial< Double > result[3])
	Generate the precession polynomials for 1950 system for a fixed Epoch T in the area specified.
static const Polynomial< Double > &	fundArg (uInt which)
	Nutation related data.
static const Polynomial< Double > &	fundArg1950 (uInt which)
static const Polynomial< Double > &	fundArg2000 (uInt which)
static const Polynomial< Double > &	planetaryArg2000 (uInt which)
	Get the planetary arguments (L, L', F, D, Om, Me, Ve, E, Ma, Ju Sa, Ur, Ne, pre).
static const Double *	mulArg (uInt which)
	Generate the which' vector of the nutation series arguments.
static const Double *	mulArg1950 (uInt which)
static const Double *	mulArg2000A (uInt which)
static const Double *	mulArg2000B (uInt which)
static const Double *	mulPlanArg2000A (uInt which)
static const Double *	mulArgEqEqCT2000 (uInt which)
	Generate the which' vector of the equation of equinoxes (IAU2000) complementary terms series arguments.
static CountedPtr< Matrix < Double > >	mulSC (Double time, Double epsilon)
	Generate the which' vector of the nutation series multipliers at T, measured in Julian centuries since J2000.0, respectively B1900.0.
static CountedPtr< Matrix < Double > >	mulSC1950 (Double time, Double epsilon)
static CountedPtr< Matrix < Double > >	mulSC2000A (Double time, Double epsilon)
static CountedPtr< Matrix < Double > >	mulSC2000B (Double time, Double epsilon)
static const Double *	mulPlanSC2000A (uInt which)
static const Double *	mulSCEqEqCT2000 (uInt which)
	Generate the which' vector of the equation of equinoxes (IAU2000) complementary terms series multipliers at T, measured in Julian centuries since J2000.0, respectively B1900.0.
static Double	dPsiEps (uInt which, Double T)
	Get nutation angles corrections for UTC T in rad.
static Vector< Double >	Planetary (MeasTable::Types which, Double T)
	Planetary (JPL DE) related data.
static Double	Planetary (MeasTable::JPLconst what)
	Get the JPL DE constant indicated.
static void	initObservatories ()
	Observatory positions.
static const Vector< String > &	Observatories ()
	Get list of all observatories.
static Bool	Observatory (MPosition &obs, const String &nam)
	Get position of observatory nam (False if not present).
static Bool	AntennaResponsesPath (String &antRespPath, const String &nam)
	Get _absolute_ path to AntennaResponses table of observatory `nam`.
static void	initSources ()
	Source list positions.
static const Vector< String > &	Sources ()
	Get list of all sources.
static Bool	Source (MDirection &obs, const String &nam)
	Get position of source `nam` (False if not present).
static void	initLines ()
	Rest frequencies.
static const Vector< String > &	Lines ()
	Get list of all frequencies.
static Bool	Line (MFrequency &obs, const String &nam)
	Get frequency of line name (False if not present).
static void	initIGRF ()
	Initialise list of IGRF data.
static Vector< Double >	IGRF (Double t)
	Earth magnetic field (IGRF) data Get the harmonic terms for specified time (mjd).
static const Polynomial< Double > &	aberArg (uInt which)
	Aberration related data.
static const Polynomial< Double > &	aberArgDeriv (uInt which)
static const Polynomial< Double > &	aber1950Arg (uInt which)
static const Polynomial< Double > &	aber1950ArgDeriv (uInt which)
static const Double *	mulAberArg (uInt which)
	Generate the 'which' vector of the aberration series arguments.
static const Double *	mulAber1950Arg (uInt which)
static const Double *	mulAberSunArg (uInt which)
static const Double *	mulAberEarthArg (uInt which)
static CountedPtr< Matrix < Double > >	mulAber (Double time, Double epsilon)
	Generate the 'which' vector of the aberration series multipliers at T, measured in Julian centuries since J2000.0 (or J1900.0, yes, J1900.0, for B1950).
static CountedPtr< Matrix < Double > >	mulAber1950 (Double time, Double epsilon)
static const Vector< Double > &	mulSunAber (uInt which)
static const Vector< Double > &	mulEarthAber (uInt which)
static const Vector< Double > &	AberETerm (uInt which)
	Get the E-terms of Aberration correction (0 for position, 1 for velocity).
static Double	diurnalAber (Double radius, Double T)
	Diurnal aberration factor.
static const Vector< Double > &	velocityLSRK (uInt which)
	LSR (kinematical) velocity conversion: 0 gives J2000; 1 gives B1950.
static const Vector< Double > &	velocityLSR (uInt which)
	LSR (dynamical, IAU definition).
static const Vector< Double > &	velocityLSRGal (uInt which)
	Velocity of LSR with respect to galactic centre.
static const Vector< Double > &	velocityCMB (uInt which)
	Velocity of Local Group wrt bary center (F.Ghigo): 308km/s towards l,b = 105,-7.
static const Vector< Double > &	velocityLGROUP (uInt which)
	Velocity of CMB wrt bary center (F.Ghigo): 369.5km/s towards l,b = 264.4,48.4.
static const Polynomial< Double > &	posArg (uInt which)
	Earth and Sun position related data.
static const Polynomial< Double > &	posArgDeriv (uInt which)
	Precomputed derivative of PosArg.
static const Double *	mulPosEarthXYArg (uInt which)
	Generate the which' vector of the position series arguments.
static const Double *	mulPosEarthZArg (uInt which)
static const Double *	mulPosSunXYArg (uInt which)
static const Double *	mulPosSunZArg (uInt which)
static CountedPtr< Matrix < Double > >	mulPosEarthXY (Double time, Double epsilon)
	Generate the which' vector of the position series multipliers at T, measured in Julian centuries since J2000.0.
static CountedPtr< Matrix < Double > >	mulPosEarthZ (Double time, Double epsilon)
static CountedPtr< Matrix < Double > >	mulPosSunXY (Double time, Double epsilon)
static CountedPtr< Matrix < Double > >	mulPosSunZ (Double time, Double epsilon)
static const RotMatrix &	posToRect ()
	Get the rotation matrix to change position from ecliptic to rectangular for Soma et al.
static const RotMatrix &	rectToPos ()
	Get the rotation matrix to change position from rectangular to ecliptic for Soma et al.
static const RotMatrix &	galToSupergal ()
	Get the rotation matrix from galactic to supergalactic.
static const RotMatrix &	ICRSToJ2000 ()
	Get the rotation matrix from ICRS to J2000/FK5.
static Double	WGS84 (uInt which)
	Position related routines.
static Euler	polarMotion (Double ut)
	Polar motion related routines.
static Double	dUTC (Double utc)
	Time related routines Note: WARNING given if correction not obtainable .
static Double	dUT1 (Double utc)
	UT1-UTC (in s) for MJD tai TAI.
static Double	dTAI (Double tai=0.0)
	TDT-TAI (in s) for MJD tai TAI.
static Double	dTDT (Double ut1)
	TDB-TDT (in s) for MJD ut1 UT1.
static Double	dTDB (Double tai)
	TCB-TDB (in s) for MJD tai TAI.
static Double	dTCG (Double tai)
	TCG-TT (in s) for MJD tai TAI.
static Double	GMST0 (Double ut1)
	GMST1 at MJD ut1 UT1.
static Double	GMST00 (Double ut1, Double tt)
	GMST (IAU2000) including the ERA (IAU2000 Earth Rotation Angle) in rad.
static Double	ERA00 (Double ut1)
	Earth Rotation Angle (IAU2000) in rad.
static Double	sprime00 (Double tt)
	s' (IAU2000) in rad (approximate value)
static Double	GMUT0 (Double gmst1)
	UT1 at GMSD gmst1 GMST1.
static Double	UTtoST (Double ut1)
	Ratio UT1/MST at MJD ut1 UT1.
Private Member Functions
MeasTable &	operator= (const MeasTable &other)
	Copy assign, NOT defined.
Static Private Member Functions
static void	doInitObservatories (void *)
static void	doInitLines (void *)
static void	doInitSources (void *)
static void	doInitIGRF (void *)
static void	calcPrecesCoef (Double T, Polynomial< Double > result[3], const Double coeff[3][6])
	Calculate precessionCoef.
static void	calcPrecesCoef2000 (Polynomial< Double > result[3], const Double coeff[3][6])
static void	calcFundArg (volatile Bool &need, Polynomial< Double > result[6], const Double coeff[6][4])
	Calculate fundArg.
static void	calcFundArg00 (volatile Bool &need, Polynomial< Double > result[6], const Double coeff[6][5])
static void	calcPlanArg00 (volatile Bool &need, Polynomial< Double > result[14], const Double coeff[8][2])
Static Private Attributes
static MeasTableMulSC	theirMulSC
	Multipliers for nutation, etc.
static MeasTableMulSC1950	theirMulSC1950
static MeasTableMulSC2000A	theirMulSC2000A
static MeasTableMulSC2000B	theirMulSC2000B
static MeasTableMulAber	theirMulAber
static MeasTableMulAber1950	theirMulAber1950
static MeasTableMulPosSunXY	theirMulPosSunXY
static MeasTableMulPosSunZ	theirMulPosSunZ
static MeasTableMulPosEarthXY	theirMulPosEarthXY
static MeasTableMulPosEarthZ	theirMulPosEarthZ
static MutexedInit	obsMutexedInit
	Observatories table data.
static Vector< String >	obsNams
static Vector< MPosition >	obsPos
static Vector< String >	antResponsesPath
static MutexedInit	lineMutexedInit
	Spectral line table data.
static Vector< String >	lineNams
static Vector< MFrequency >	linePos
static MutexedInit	srcMutexedInit
	Sources table data.
static Vector< String >	srcNams
static Vector< MDirection >	srcPos
static MutexedInit	igrfMutexedInit
	IGRF data.
static Double	dtimeIGRF
static Double	firstIGRF
static Double	lastIGRF
static Double	time0IGRF
static Double	timeIGRF
static std::vector< Vector < Double > >	coefIGRF
static std::vector< Vector < Double > >	dIGRF
static uInt	iau2000_reg
	Aipsrc registration (for speed) of use of iau2000 and if so the 2000a version.
static uInt	iau2000a_reg
static Mutex	theirMutex
	Mutex for thread-safety.

Detailed Description

MeasTable provides Measure computing database data.

Intended use:

Internal

Review Status

Reviewed By:: UNKNOWN
Date Reviewed:: before2004/08/25
Test programs:: tMeasMath

Prerequisite

Measure class
MeasData class for constant data
Aipsrc class for data placement

Etymology

MeasTable from Measure and Table

Synopsis

MeasTable contains the database interface for all data necessary for precession, nutation and other Measure related calculations.
All data are obtained by calls to a method. E.g. fundArg(1) will provide the first fundamental argument for nutation calculations, i.e. 'l'.
This class contains no constructors or destructors, only static methods and (static) constants.
References:
Explanatory supplements to the Astronomical Almanac
C. Ron and J. Vondrak, Bull. Astron. Inst. Czechosl. 37, p96, 1986
M. Soma, Th. Hirayama and H. Kinoshita, Celest. Mech. 41, p389, 1988
V.S. Gubanov, Astron. Zh. 49, p1112, 1972

Where strings are passed in as arguments (observatory names, sources), they will be case insensitive, and minimum match.

Example

Usage examples can be found in Precession

Motivation

To create a clean interface between the actual calculations and the methods to obtain the parameters for these calculations. Note that the tables are in general in the format and units found in the literature. This is to be able to easy check and change them. However, in the future re-arrangement could produce faster and more compact code.

To Do

more database interfaces, rather than constants

Definition at line 102 of file MeasTable.h.

Member Enumeration Documentation

enum casacore::MeasTable::JPLconst

Codes for JPL constants: order should be same as in MeasJPL, length less than or equal.

Enumerator:

CAU	Light velocity used in AU/d.
GMS	Solar mass (GM0)/c² in AU.
AU	AU in km.
RADS	Solar radius in AU.
N_JPLconst	# of codes

Definition at line 134 of file MeasTable.h.

enum casacore::MeasTable::Types

Types to be used in different calls.

Enumerator:

MERCURY	Planetary information.
VENUS
EARTH
MARS
JUPITER
SATURN
URANUS
NEPTUNE
PLUTO
MOON
SUN
BARYSOLAR	Solar system barycentre.
BARYEARTH	Earth-Moon system barycentre.
NUTATION	Nutations.
LIBRATION	Librations.
N_Types	Number of types.

Definition at line 108 of file MeasTable.h.

Member Function Documentation

static const Polynomial<Double>& casacore::MeasTable::aber1950Arg ( uInt which ) [static]

static const Polynomial<Double>& casacore::MeasTable::aber1950ArgDeriv ( uInt which ) [static]

static const Polynomial<Double>& casacore::MeasTable::aberArg ( uInt which ) [static]

Aberration related data.

Generate the polynomial for the fundamental arguments (l1-l8, w, D, l, l', F) for the Ron/Vondrak aberration calculations as a function of Julian centuries(J2000), or the comparable ones for the Gubanov expansion (B1950).

static const Polynomial<Double>& casacore::MeasTable::aberArgDeriv ( uInt which ) [static]

static const Vector<Double>& casacore::MeasTable::AberETerm ( uInt which ) [static]

Get the E-terms of Aberration correction (0 for position, 1 for velocity).

static Bool casacore::MeasTable::AntennaResponsesPath	(	String &	antRespPath,
		const String &	nam
	)			`[static]`

Get _absolute_ path to AntennaResponses table of observatory nam.

It returns False if no _valid_ path can be found or the observatory is unknown. If the observatory is known, antRespPath will be set to the entry in the AntennaResponses column of the Observatories table even if it doesn't describe a valid path; if the entry is not an absolute path, the data directory name will be prepended and validity verified.

static void casacore::MeasTable::calcFundArg	(	volatile Bool &	need,
		Polynomial< Double >	result[6],
		const Double	coeff[6][4]
	)			`[static, private]`

Calculate fundArg.

static void casacore::MeasTable::calcFundArg00	(	volatile Bool &	need,
		Polynomial< Double >	result[6],
		const Double	coeff[6][5]
	)			`[static, private]`

static void casacore::MeasTable::calcPlanArg00	(	volatile Bool &	need,
		Polynomial< Double >	result[14],
		const Double	coeff[8][2]
	)			`[static, private]`

static void casacore::MeasTable::calcPrecesCoef	(	Double	T,
		Polynomial< Double >	result[3],
		const Double	coeff[3][6]
	)			`[static, private]`

Calculate precessionCoef.

static void casacore::MeasTable::calcPrecesCoef2000	(	Polynomial< Double >	result[3],
		const Double	coeff[3][6]
	)			`[static, private]`

static Double casacore::MeasTable::diurnalAber	(	Double	radius,
		Double	T
	)			`[static]`

Diurnal aberration factor.

static void casacore::MeasTable::doInitIGRF ( void * ) [static, private]

static void casacore::MeasTable::doInitLines ( void * ) [static, private]

static void casacore::MeasTable::doInitObservatories ( void * ) [static, private]

static void casacore::MeasTable::doInitSources ( void * ) [static, private]

static Double casacore::MeasTable::dPsiEps	(	uInt	which,
		Double	T
	)			`[static]`

Get nutation angles corrections for UTC T in rad.

which = 0 : dPsi as given by IERS for IAU nutation theory; = 1: dEps as same.

static Double casacore::MeasTable::dTAI ( Double tai = 0.0 ) [static]

TDT-TAI (in s) for MJD tai TAI.

Note this is equal to TT2000-TAI

static Double casacore::MeasTable::dTCG ( Double tai ) [static]

TCG-TT (in s) for MJD tai TAI.

static Double casacore::MeasTable::dTDB ( Double tai ) [static]

TCB-TDB (in s) for MJD tai TAI.

static Double casacore::MeasTable::dTDT ( Double ut1 ) [static]

TDB-TDT (in s) for MJD ut1 UT1.

static Double casacore::MeasTable::dUT1 ( Double utc ) [static]

UT1-UTC (in s) for MJD tai TAI.

static Double casacore::MeasTable::dUTC ( Double utc ) [static]

Time related routines
Note: WARNING given if correction not obtainable
.

Thrown Exceptions

AipsError if table seems to be corrupted

Give TAI-UTC (in s) for MJD utc UTC

static Double casacore::MeasTable::ERA00 ( Double ut1 ) [static]

Earth Rotation Angle (IAU2000) in rad.

static RotMatrix casacore::MeasTable::frameBias00 ( ) [static]

Get the frame bias matrix for IAU2000 model.

static const Polynomial<Double>& casacore::MeasTable::fundArg ( uInt which ) [static]

Nutation related data.

Generate the polynomial for the fundamental arguments (eps, l, l', F, D, omega) as a function of Julian centuries

static const Polynomial<Double>& casacore::MeasTable::fundArg1950 ( uInt which ) [static]

static const Polynomial<Double>& casacore::MeasTable::fundArg2000 ( uInt which ) [static]

static const RotMatrix& casacore::MeasTable::galToSupergal ( ) [static]

Get the rotation matrix from galactic to supergalactic.

Based on De Vaucouleurs 1976: Pole at 47.37/6.32 deg; 137.37 l0 Euler angles: 90, 83.68, 47.37 degrees

static Double casacore::MeasTable::GMST0 ( Double ut1 ) [static]

GMST1 at MJD ut1 UT1.

static Double casacore::MeasTable::GMST00	(	Double	ut1,
		Double	tt
	)			`[static]`

GMST (IAU2000) including the ERA (IAU2000 Earth Rotation Angle) in rad.

static Double casacore::MeasTable::GMUT0 ( Double gmst1 ) [static]

UT1 at GMSD gmst1 GMST1.

static const RotMatrix& casacore::MeasTable::ICRSToJ2000 ( ) [static]

Get the rotation matrix from ICRS to J2000/FK5.

Based on the IAU 2000 resolutions (the bias matrix)

static Vector<Double> casacore::MeasTable::IGRF ( Double t ) [static]

Earth magnetic field (IGRF) data Get the harmonic terms for specified time (mjd).

static void casacore::MeasTable::initIGRF ( ) [static]

Initialise list of IGRF data.

static void casacore::MeasTable::initLines ( ) [static]

Rest frequencies.

Initialise list from internal Table for now

static void casacore::MeasTable::initObservatories ( ) [static]

Observatory positions.

Initialise list of all observatories from Observatories table

static void casacore::MeasTable::initSources ( ) [static]

Source list positions.

Initialise list of all source from Sources table

static Bool casacore::MeasTable::Line	(	MFrequency &	obs,
		const String &	nam
	)			`[static]`

Get frequency of line name (False if not present).

static const Vector<String>& casacore::MeasTable::Lines ( ) [static]

Get list of all frequencies.

static CountedPtr<Matrix<Double> > casacore::MeasTable::mulAber	(	Double	time,
		Double	epsilon
	)			`[static]`

Generate the 'which' vector of the aberration series multipliers at T, measured in Julian centuries since J2000.0 (or J1900.0, yes, J1900.0, for B1950).

static CountedPtr<Matrix<Double> > casacore::MeasTable::mulAber1950	(	Double	time,
		Double	epsilon
	)			`[static]`

static const Double* casacore::MeasTable::mulAber1950Arg ( uInt which ) [static]

static const Double* casacore::MeasTable::mulAberArg ( uInt which ) [static]

Generate the 'which' vector of the aberration series arguments.

static const Double* casacore::MeasTable::mulAberEarthArg ( uInt which ) [static]

static const Double* casacore::MeasTable::mulAberSunArg ( uInt which ) [static]

static const Double* casacore::MeasTable::mulArg ( uInt which ) [static]

Generate the which' vector of the nutation series arguments.

static const Double* casacore::MeasTable::mulArg1950 ( uInt which ) [static]

static const Double* casacore::MeasTable::mulArg2000A ( uInt which ) [static]

static const Double* casacore::MeasTable::mulArg2000B ( uInt which ) [static]

static const Double* casacore::MeasTable::mulArgEqEqCT2000 ( uInt which ) [static]

Generate the which' vector of the equation of equinoxes (IAU2000) complementary terms series arguments.

static const Vector<Double>& casacore::MeasTable::mulEarthAber ( uInt which ) [static]

static const Double* casacore::MeasTable::mulPlanArg2000A ( uInt which ) [static]

static const Double* casacore::MeasTable::mulPlanSC2000A ( uInt which ) [static]

static CountedPtr<Matrix<Double> > casacore::MeasTable::mulPosEarthXY	(	Double	time,
		Double	epsilon
	)			`[static]`

Generate the which' vector of the position series multipliers at T, measured in Julian centuries since J2000.0.

static const Double* casacore::MeasTable::mulPosEarthXYArg ( uInt which ) [static]

Generate the which' vector of the position series arguments.

static CountedPtr<Matrix<Double> > casacore::MeasTable::mulPosEarthZ	(	Double	time,
		Double	epsilon
	)			`[static]`

static const Double* casacore::MeasTable::mulPosEarthZArg ( uInt which ) [static]

static CountedPtr<Matrix<Double> > casacore::MeasTable::mulPosSunXY	(	Double	time,
		Double	epsilon
	)			`[static]`

static const Double* casacore::MeasTable::mulPosSunXYArg ( uInt which ) [static]

static CountedPtr<Matrix<Double> > casacore::MeasTable::mulPosSunZ	(	Double	time,
		Double	epsilon
	)			`[static]`

static const Double* casacore::MeasTable::mulPosSunZArg ( uInt which ) [static]

static CountedPtr<Matrix<Double> > casacore::MeasTable::mulSC	(	Double	time,
		Double	epsilon
	)			`[static]`

Generate the which' vector of the nutation series multipliers at T, measured in Julian centuries since J2000.0, respectively B1900.0.

static CountedPtr<Matrix<Double> > casacore::MeasTable::mulSC1950	(	Double	time,
		Double	epsilon
	)			`[static]`

static CountedPtr<Matrix<Double> > casacore::MeasTable::mulSC2000A	(	Double	time,
		Double	epsilon
	)			`[static]`

static CountedPtr<Matrix<Double> > casacore::MeasTable::mulSC2000B	(	Double	time,
		Double	epsilon
	)			`[static]`

static const Double* casacore::MeasTable::mulSCEqEqCT2000 ( uInt which ) [static]

Generate the which' vector of the equation of equinoxes (IAU2000) complementary terms series multipliers at T, measured in Julian centuries since J2000.0, respectively B1900.0.

static const Vector<Double>& casacore::MeasTable::mulSunAber ( uInt which ) [static]

static const Vector<String>& casacore::MeasTable::Observatories ( ) [static]

Get list of all observatories.

static Bool casacore::MeasTable::Observatory	(	MPosition &	obs,
		const String &	nam
	)			`[static]`

Get position of observatory nam (False if not present).

MeasTable& casacore::MeasTable::operator= ( const MeasTable & other ) [private]

Copy assign, NOT defined.

static Double casacore::MeasTable::Planetary ( MeasTable::JPLconst what ) [static]

Get the JPL DE constant indicated.

static Vector<Double> casacore::MeasTable::Planetary	(	MeasTable::Types	which,
		Double	T
	)			`[static]`

Planetary (JPL DE) related data.

Get the position (AU or rad) and velocity (AU/d or rad/d) for specified code at TDB T. The ephemeris to use (now DE200 or DE405) can be selected with the 'measures.jpl.ephemeris' aipsrc resource (default DE200).

static const Polynomial<Double>& casacore::MeasTable::planetaryArg2000 ( uInt which ) [static]

Get the planetary arguments (L, L', F, D, Om, Me, Ve, E, Ma, Ju Sa, Ur, Ne, pre).

static Euler casacore::MeasTable::polarMotion ( Double ut ) [static]

Polar motion related routines.

Get the polar motion (-x,-y,0)(2,1,3) angles at the given epoch

static const Polynomial<Double>& casacore::MeasTable::posArg ( uInt which ) [static]

Earth and Sun position related data.

Fundamental arguments for Soma et al. methods

static const Polynomial<Double>& casacore::MeasTable::posArgDeriv ( uInt which ) [static]

Precomputed derivative of PosArg.

static const RotMatrix& casacore::MeasTable::posToRect ( ) [static]

Get the rotation matrix to change position from ecliptic to rectangular for Soma et al.

analytical expression

static void casacore::MeasTable::precessionCoef	(	Double	T,
		Polynomial< Double >	result[3]
	)			`[static]`

Generate the precession calculation polynomials for a fixed Epoch T in the result area specified.

T is given in Julian centuries since J2000.0.

static void casacore::MeasTable::precessionCoef1950	(	Double	T,
		Polynomial< Double >	result[3]
	)			`[static]`

Generate the precession polynomials for 1950 system for a fixed Epoch T in the area specified.

T is given in Tropical centuries since B1850.0

static void casacore::MeasTable::precessionCoef2000 ( Polynomial< Double > result[3] ) [static]

Generate the precession polynomials for IAU2000 system.

static Double casacore::MeasTable::precRate00 ( const uInt which ) [static]

Precession related data.

Get the precession-rate part of the IAU2000 precession-nutation models (which 0=dpsi (long) and 1=deps (obliquity) and 2 =0)

static const RotMatrix& casacore::MeasTable::rectToPos ( ) [static]

Get the rotation matrix to change position from rectangular to ecliptic for Soma et al.

analytical expression

static Bool casacore::MeasTable::Source	(	MDirection &	obs,
		const String &	nam
	)			`[static]`

Get position of source nam (False if not present).

static const Vector<String>& casacore::MeasTable::Sources ( ) [static]

Get list of all sources.

static Double casacore::MeasTable::sprime00 ( Double tt ) [static]

s' (IAU2000) in rad (approximate value)

static Bool casacore::MeasTable::useIAU2000 ( ) [static]

Selection related data.

Are the IAU2000 precession/nutation to be used or not (IAU1984)

static Bool casacore::MeasTable::useIAU2000A ( ) [static]

If IAU2000 model, do we use the high precision 2000A model?

static Double casacore::MeasTable::UTtoST ( Double ut1 ) [static]

Ratio UT1/MST at MJD ut1 UT1.

static const Vector<Double>& casacore::MeasTable::velocityCMB ( uInt which ) [static]

Velocity of Local Group wrt bary center (F.Ghigo): 308km/s towards l,b = 105,-7.

0 for J2000, 1 for B1950

static const Vector<Double>& casacore::MeasTable::velocityLGROUP ( uInt which ) [static]

Velocity of CMB wrt bary center (F.Ghigo): 369.5km/s towards l,b = 264.4,48.4.

0 for J2000, 1 for B1950

static const Vector<Double>& casacore::MeasTable::velocityLSR ( uInt which ) [static]

LSR (dynamical, IAU definition).

Velocity (9,12,7) km/s in galactic coordinates. Or 16.552945 towards l,b = 53.13, +25.02 deg. 0 gives J2000, 1 gives B1950 velocities.

static const Vector<Double>& casacore::MeasTable::velocityLSRGal ( uInt which ) [static]

Velocity of LSR with respect to galactic centre.

220 km/s in direction l,b = 270, +0 deg. 0 returns J2000, 1 B1950

static const Vector<Double>& casacore::MeasTable::velocityLSRK ( uInt which ) [static]

LSR (kinematical) velocity conversion: 0 gives J2000; 1 gives B1950.

In both cases a velocity of 20.0 km/s is assumed, and a B1900 RA/Dec direction of (270,30) degrees. This value has been defined between the groups doing HI radio work in the mid 1950s.

static Double casacore::MeasTable::WGS84 ( uInt which ) [static]