tcc.axis.coordConvWithFP Namespace Reference

Functions
def	coordConvWithFP
	Convert a coord from one coordinate system to another. More...

Variables
list	__all__ = ["coordConvWithFP"]
tuple	FPNames = set(("instrument", "gprobe", "gimage", "ptcorr", "rotator"))
float	DeltaT = 0.01

Function Documentation

def tcc.axis.coordConvWithFP.coordConvWithFP	(		fromCoordSys,
			fromPVTPair,
			fromPxPMRadVel,
			fromDir,
			toCoordSys,
			obj,
			inst,
			zeroPM,
			useGSWavelen
	)

Convert a coord from one coordinate system to another.

The conversion is performed at obj.updateTime; you may wish to call computeObj before calling this subroutine to set that to your desired date.

Parameters

[in]	fromCoordSys	from coordinate system; a coordConv.CoordSys if one matches, else an object containing getName() and getDate() (for gimage and gprobe coordinates the date is the guide probe number)
[in]	fromPVTPair	from position (equatorial or focal plane x,y, depending on fromSys)
[in]	fromPxPMRadVel	from parallax, proper motion and radial velocity
[in]	fromDir	from direction as a coordConv.PVT
[in]	toCoordSys	to coordinate system (a coordConv.CoordSys)
[in]	obj	object block computed at desired desired TAI date of conversion
[in]	inst	instrument block
[in]	zeroPM	zero proper motion and parallax to the current date? Ignored unless fromCoordSys and toCoordSys are both mean, since otherwise proper motion is always zeroed.
[in]	useGSWavelen	use guide star wavelength? else use object wavelength

Returns

a tuple:

• toPVTPair: resulting pair of PVTs (equatorial or x,y, depending on toSys)
• toPxPMRadVel: resulting parallax, proper motion and radial velocity
• toDir: angle of fromDir in the "to" system, as a coordConv.PVT
• scaleChange: change in scale (a float): output delta sky/input delta sky, measured along the specified direction

Definition at line 22 of file coordConvWithFP.py.

Variable Documentation

list tcc.axis.coordConvWithFP.__all__ = ["coordConvWithFP"]

Definition at line 17 of file coordConvWithFP.py.

float tcc.axis.coordConvWithFP.DeltaT = 0.01

Definition at line 20 of file coordConvWithFP.py.

tuple tcc.axis.coordConvWithFP.FPNames = set(("instrument", "gprobe", "gimage", "ptcorr", "rotator"))

Definition at line 19 of file coordConvWithFP.py.