Public Member Functions
def	__init__
def	newfig
def	nextfig
def	endfig
def	msg
def	isquantity
def	isdirection
def	ismstp
def	statim
	plot an image (optionally), and calculate its statistics
def	calc_pointings2
def	read_pointings
def	write_pointings
def	average_direction
def	median_direction
def	direction_splitter
def	dir_s2m
def	dir_m2s
def	wrapang
def	noisetemp
	========================== tsys ==========================
def	sensitivity
def	setcfg
def	ephemeris
	===================== ephemeris ==========================
def	readantenna

def	tmgeod
	==================== geodesy =============================
def	tconpc
def	getdatum
def	utm2long
def	long2xyz
def	xyz2long
def	utm2xyz
def	locxyz2itrf
def	itrf2loc
def	plotants
def	cellsize
	helper function to get the pixel size from an image (positive increments)
def	spectral
	helper function to get the spectral size from an image
def	is4d
def	modifymodel
	fit modelimage into a 4 coordinate image defined by the parameters
def	imclean
	image/clean subtask
def	flatimage
def	convimage
def	bandname
def	polsettings
def	applyRotate
	ALMA calcpointings.
def	isEven
def	getTrianglePoints
def	getTriangularTiling
def	needsFiller
def	getBaseTriangularTiling
def	getShiftTriangularTiling
Public Attributes
	direction
	verbose
	centerfreq
	bandwidth
	totaltime
	pmulti
	pointings
	ignoring line that has less than 3 elements
Static Public Attributes
tuple	f
	Helper function to read 4 columns text antenna table X, Y, Z, Diam.
string	line
list	inx
list	iny
list	inz
list	ind
list	id
int	nant
dictionary	params
	if the line is a parameter line like coordsys=utms, then it stores that
tuple	line
list	line
tuple	paramlist
tuple	splitline
	ignoring line that has less than 4 elements all coord systems should have x,y,z,diam,id, where xyz varies print line.split()
	stnx
	earth-centered XYZ i.e.
	stny
	stnz
list	stnx
list	stny
list	stnz
list	zone
	expect easting, northing, elevation in m
list	datum
list	nors
	vsave
tuple	meobs
tuple	obs
tuple	obslat
tuple	obslon
tuple	obsalt

Detailed Description

Definition at line 51 of file simutil.py.

Constructor & Destructor Documentation

def simutil.simutil.__init__	(	self,
		direction = `""`,
		centerfreq = `qa.quantity("245GHz")`,
		bandwidth = `qa.quantity("1GHz")`,
		totaltime = `qa.quantity("0h")`,
		verbose = `False`
	)

Definition at line 56 of file simutil.py.

Member Function Documentation

def simutil.simutil.applyRotate	(	self,
		x,
		y,
		tcos,
		tsin
	)

ALMA calcpointings.

Definition at line 2973 of file simutil.py.

Referenced by simutil.simutil.getBaseTriangularTiling(), simutil.simutil.getShiftTriangularTiling(), and simutil.simutil.getTrianglePoints().

def simutil.simutil.average_direction	(	self,
		directions = `None`
	)

Returns the average of directions as a string, and relative offsets

Definition at line 615 of file simutil.py.

References simutil.simutil.direction, simutil.simutil.direction_splitter(), and simutil.simutil.wrapang().

Referenced by simutil.simutil.dir_s2m(), and simutil.simutil.direction_splitter().

def simutil.simutil.bandname	(	self,
		freq
	)

Given freq in GHz, return the silly and in some cases deliberately
confusing band name that some people insist on using.

Definition at line 2898 of file simutil.py.

def simutil.simutil.calc_pointings2	(	self,
		spacing,
		size,
		maptype = `"hex"`,
		direction = `None`,
		relmargin = `0.5`,
		beam = `0.`
	)

If direction is a list, simply returns direction and the number of
pointings in it.

Otherwise, returns a hexagonally packed list of pointings separated by
spacing and fitting inside an area specified by direction and mapsize, 
as well as the number of pointings.  The hexagonal packing starts with a
horizontal row centered on direction, and the other rows alternate
being horizontally offset by a half spacing.

Definition at line 341 of file simutil.py.

References simutil.simutil.direction, simutil.simutil.direction_splitter(), simutil.simutil.getTrianglePoints(), simutil.simutil.getTriangularTiling(), simutil.simutil.isdirection(), simutil.simutil.isquantity(), __casac__.quanta.quanta.isquantity(), simutil.simutil.msg(), gprof2dot.ParseError.msg, and simutil.simutil.verbose.

def simutil.simutil.cellsize	(	self,
		image
	)

helper function to get the pixel size from an image (positive increments)

Definition at line 2069 of file simutil.py.

References irc_cs_task_regression.max, simutil.simutil.msg(), and gprof2dot.ParseError.msg.

Referenced by simutil.simutil.statim().

def simutil.simutil.convimage	(	self,
		modelflat,
		outflat,
		complist = `""`
	)

Definition at line 2816 of file simutil.py.

References irc_cs_task_regression.max, simutil.simutil.msg(), gprof2dot.ParseError.msg, and simutil.simutil.verbose.

def simutil.simutil.dir_m2s	(	self,
		dir
	)

Given a direction as a measure, return it as astring 'refcode lon lat'.

Definition at line 771 of file simutil.py.

References simutil.simutil.msg(), and gprof2dot.ParseError.msg.

def simutil.simutil.dir_s2m	(	self,
		direction = `None`
	)

Given a direction as a string 'refcode lon lat', return it as qa measure.

Definition at line 749 of file simutil.py.

References simutil.simutil.average_direction(), simutil.simutil.direction, simutil.simutil.msg(), gprof2dot.ParseError.msg, and simutil.simutil.verbose.

Referenced by simutil.simutil.modifymodel().

def simutil.simutil.direction_splitter	(	self,
		direction = `None`
	)

Given a direction, return its epoch, x, and y parts.  Epoch will be ''
if absent, or '%s ' % epoch if present.  x and y will be angle qa's in
degrees.

Definition at line 713 of file simutil.py.

References simutil.simutil.average_direction(), and simutil.simutil.direction.

Referenced by simutil.simutil.average_direction(), simutil.simutil.calc_pointings2(), simutil.simutil.ephemeris(), simutil.simutil.isdirection(), simutil.simutil.median_direction(), and simutil.simutil.modifymodel().

def simutil.simutil.endfig	(	self,
		show = `True`,
		filename = `""`
	)

Definition at line 99 of file simutil.py.

def simutil.simutil.ephemeris	(	self,
		date,
		usehourangle = `True`,
		direction = `None`,
		telescope = `None`,
		ms = `None`
	)

===================== ephemeris ==========================

Definition at line 1218 of file simutil.py.

References simutil.simutil.direction, simutil.simutil.direction_splitter(), irc_cs_task_regression.max, simutil.simutil.msg(), gprof2dot.ParseError.msg, and simutil.simutil.totaltime.

def simutil.simutil.flatimage	(	self,
		image,
		complist = `""`,
		verbose = `False`
	)

Definition at line 2755 of file simutil.py.

References simutil.simutil.msg(), and gprof2dot.ParseError.msg.

Referenced by simutil.simutil.modifymodel().

def simutil.simutil.getBaseTriangularTiling	(	self,
		width,
		height,
		angle,
		spacing,
		pb
	)

Definition at line 3062 of file simutil.py.

References simutil.simutil.applyRotate(), simutil.simutil.isEven(), and simutil.simutil.needsFiller().

Referenced by simutil.simutil.getTriangularTiling().

def simutil.simutil.getdatum	(	self,
		datumcode,
		verbose = `False`
	)

local datums and ellipsoids;
take local earth-centered xyz coordinates, add dx,dy,dz to get wgs84 earth-centered

Definition at line 1655 of file simutil.py.

References simutil.simutil.msg(), and gprof2dot.ParseError.msg.

Referenced by simutil.simutil.long2xyz(), simutil.simutil.utm2long(), and simutil.simutil.xyz2long().

def simutil.simutil.getShiftTriangularTiling	(	self,
		width,
		height,
		angle,
		spacing,
		pb
	)

Definition at line 3098 of file simutil.py.

References simutil.simutil.applyRotate(), simutil.simutil.isEven(), and simutil.simutil.needsFiller().

Referenced by simutil.simutil.getTriangularTiling().

def simutil.simutil.getTrianglePoints	(	self,
		width,
		height,
		angle,
		spacing
	)

Definition at line 2983 of file simutil.py.

References simutil.simutil.applyRotate(), and simutil.simutil.isEven().

Referenced by simutil.simutil.calc_pointings2().

def simutil.simutil.getTriangularTiling	(	self,
		longlength,
		latlength,
		angle,
		spacing,
		pb
	)

Definition at line 3032 of file simutil.py.

References simutil.simutil.getBaseTriangularTiling(), and simutil.simutil.getShiftTriangularTiling().

Referenced by simutil.simutil.calc_pointings2().

def simutil.simutil.imclean	(	self,
		mstoimage,
		imagename,
		cleanmode,
		cell,
		imsize,
		imcenter,
		niter,
		threshold,
		weighting,
		outertaper,
		stokes,
		sourcefieldlist = `""`,
		modelimage = `""`,
		mask = `[]`
	)

image/clean subtask

Definition at line 2566 of file simutil.py.

References simutil.simutil.msg(), gprof2dot.ParseError.msg, and simutil.simutil.verbose.

Referenced by simutil.simutil.modifymodel(), and simutil.simutil.sensitivity().

def simutil.simutil.is4d	(	self,
		image
	)

Definition at line 2100 of file simutil.py.

References simutil.simutil.modifymodel().

def simutil.simutil.isdirection	(	self,
		s,
		halt = `True`
	)

Definition at line 172 of file simutil.py.

References simutil.simutil.direction_splitter(), simutil.simutil.msg(), and gprof2dot.ParseError.msg.

Referenced by simutil.simutil.calc_pointings2(), and simutil.simutil.modifymodel().

def simutil.simutil.isEven	(	self,
		num
	)

Definition at line 2976 of file simutil.py.

Referenced by simutil.simutil.getBaseTriangularTiling(), simutil.simutil.getShiftTriangularTiling(), and simutil.simutil.getTrianglePoints().

def simutil.simutil.ismstp	(	self,
		s,
		halt = `False`
	)

Definition at line 192 of file simutil.py.

References simutil.simutil.msg(), and gprof2dot.ParseError.msg.

def simutil.simutil.isquantity	(	self,
		s,
		halt = `True`
	)

Definition at line 158 of file simutil.py.

References simutil.simutil.msg(), and gprof2dot.ParseError.msg.

Referenced by simutil.simutil.calc_pointings2(), simutil.simutil.modifymodel(), and simutil.simutil.sensitivity().

def simutil.simutil.itrf2loc	(	self,
		x,
		y,
		z,
		cx,
		cy,
		cz
	)

itrf xyz and COFA cx,cy,cz -> latlon WGS84

Definition at line 1973 of file simutil.py.

References simutil.simutil.xyz2long().

Referenced by simutil.simutil.plotants().

def simutil.simutil.locxyz2itrf	(	self,
		lat,
		longitude,
		locx = `0.0`,
		locy = `0.0`,
		locz = `0.0`
	)

Returns the nominal ITRF (X, Y, Z) coordinates (m) for a point at "local"
(x, y, z) (m) measured at geodetic latitude lat and longitude longitude
(degrees).  The ITRF frame used is not the official ITRF, just a right
handed Cartesian system with X going through 0 latitude and 0 longitude,
and Z going through the north pole.  The "local" (x, y, z) are measured
relative to the closest point to (lat, longitude) on the WGS84 reference
ellipsoid, with z normal to the ellipsoid and y pointing north.

Definition at line 1940 of file simutil.py.

Referenced by simutil.simutil.sensitivity().

def simutil.simutil.long2xyz	(	self,
		long,
		lat,
		elevation,
		datum
	)

Definition at line 1875 of file simutil.py.

References simutil.simutil.getdatum().

Referenced by simutil.simutil.utm2xyz().

def simutil.simutil.median_direction	(	self,
		directions = `None`
	)

Returns the median of directions as a string, and relative offsets

Definition at line 662 of file simutil.py.

References simutil.simutil.direction, simutil.simutil.direction_splitter(), and simutil.simutil.wrapang().

def simutil.simutil.modifymodel	(	self,
		inimage,
		outimage,
		inbright,
		indirection,
		incell,
		incenter,
		inwidth,
		innchan,
		flatimage = `False`
	)

fit modelimage into a 4 coordinate image defined by the parameters

Definition at line 2128 of file simutil.py.

References make_mmsdata.all, simutil.simutil.dir_s2m(), simutil.simutil.direction_splitter(), simutil.simutil.flatimage(), simutil.simutil.imclean(), simutil.simutil.isdirection(), simutil.simutil.isquantity(), __casac__.quanta.quanta.isquantity(), irc_cs_task_regression.max, simutil.simutil.msg(), gprof2dot.ParseError.msg, and simutil.simutil.verbose.

Referenced by simutil.simutil.is4d().

def simutil.simutil.msg	(	self,
		s,
		origin = `None`,
		priority = `None`
	)

def simutil.simutil.needsFiller	(	self,
		length,
		spacing,
		bs,
		npoints
	)

Definition at line 3056 of file simutil.py.

Referenced by simutil.simutil.getBaseTriangularTiling(), and simutil.simutil.getShiftTriangularTiling().

def simutil.simutil.newfig	(	self,
		multi = `0`,
		show = `True`
	)

Definition at line 65 of file simutil.py.

References simutil.simutil.msg(), gprof2dot.ParseError.msg, and simutil.simutil.pmulti.

def simutil.simutil.nextfig ( self )

Definition at line 84 of file simutil.py.

References simutil.simutil.pmulti.

def simutil.simutil.noisetemp	(	self,
		telescope = `None`,
		freq = `None`,
		diam = `None`,
		epsilon = `None`
	)

========================== tsys ==========================

Noise temperature and efficiencies for several telescopes:
      ALMA, ACA, EVLA, VLA, and SMA
Input: telescope name, frequency as a quantity string "300GHz", 
       dish diameter (optional - knows diameters for arrays above)
       epsilon = rms surface accuracy in microns (also optional - 
   this method contains the spec values for each telescope)
Output: eta_p phase efficieny (from Ruze formula), 
eta_s spill (main beam) efficiency,
eta_b geometrical blockage efficiency,
eta_t taper efficiency,
eta_q correlator efficiency including quantization,
t_rx  reciever temperature.
antenna efficiency = eta_p * eta_s * eta_b * eta_t
Notes: VLA correlator efficiency includes waveguide loss
       EVLA correlator efficiency is probably optimistic at 0.88

Definition at line 809 of file simutil.py.

References simutil.simutil.bandwidth, simutil.simutil.centerfreq, simutil.simutil.msg(), gprof2dot.ParseError.msg, simutil.simutil.sensitivity(), and simutil.simutil.verbose.

Referenced by simutil.simutil.sensitivity(), and simutil.simutil.wrapang().

def simutil.simutil.plotants	(	self,
		x,
		y,
		z,
		d,
		name
	)

Definition at line 2012 of file simutil.py.

References simutil.simutil.itrf2loc(), and irc_cs_task_regression.max.

def simutil.simutil.polsettings	(	self,
		telescope,
		poltype = `None`,
		listall = `False`
	)

Returns stokes parameters (for use as stokes in sm.setspwindow)
and feed type (for use as mode in sm.setfeed).

If poltype is not specified or recognized, a guess is made using
telescope.  Defaults to 'XX YY', 'perfect X Y'

If listall is True, return the options instead.

Definition at line 2948 of file simutil.py.

Referenced by simutil.simutil.sensitivity().

def simutil.simutil.read_pointings	(	self,
		filename
	)

read pointing list from file containing epoch, ra, dec,
and scan time (optional,in sec).
Parameter:
     filename:  (str) the name of input file
       
The input file (ASCII) should contain at least 3 fields separated
by a space which specify positions with epoch, ra and dec (in dms
or hms).
The optional field, time, shoud be a list of decimal numbers
which specifies integration time at each position in second.
The lines which start with '#' is ignored and can be used
as comment lines. 

Example of an input file:
#Epoch     RA          DEC      TIME(optional)
J2000 23h59m28.10 -019d52m12.35 10.0
J2000 23h59m32.35 -019d52m12.35 10.0
J2000 23h59m36.61 -019d52m12.35 60.0

Definition at line 509 of file simutil.py.

References simutil.simutil.msg(), gprof2dot.ParseError.msg, and simutil.simutil.pointings.

def simutil.simutil.readantenna	(	self,
		antab = `None`
	)

Definition at line 1356 of file simutil.py.

Referenced by simutil.simutil.sensitivity().

def simutil.simutil.sensitivity	(	self,
		freq,
		bandwidth,
		etime,
		elevation,
		pwv = `None`,
		telescope = `None`,
		diam = `None`,
		nant = `None`,
		antennalist = `None`,
		doimnoise = `None`,
		integration = `None`,
		debug = `None`,
		method = `"tsys-atm"`,
		tau0 = `None`,
		t_sky = `None`
	)

Definition at line 962 of file simutil.py.

References simutil.simutil.imclean(), simutil.simutil.isquantity(), __casac__.quanta.quanta.isquantity(), simutil.simutil.locxyz2itrf(), irc_cs_task_regression.max, simutil.simutil.msg(), gprof2dot.ParseError.msg, simutil.simutil.noisetemp(), simutil.simutil.polsettings(), simutil.simutil.readantenna(), simutil.simutil.setcfg(), and simutil.simutil.verbose.

Referenced by simutil.simutil.noisetemp().

def simutil.simutil.setcfg	(	self,
		mysm,
		telescope,
		x,
		y,
		z,
		diam,
		padnames,
		posobs,
		mounttype = `None`
	)

Sets the antenna positions for the mysm sm instance, which should have
already opened an MS, given
telescope - telescope name
x         - array of X positions, i.e. stnx from readantenna
y         - array of Y positions, i.e. stny from readantenna
z         - array of Z positions, i.e. stnz from readantenna
diam      - numpy.array of antenna diameters, i.e. from readantenna
padnames  - list of pad names
posobs    - The observatory position as a measure.

Optional:
mounttype   (Defaults to a guess based on telescope.)

Returns the mounttype that it uses.

Closes mysm and throws a ValueError if it can't set the configuration.

Definition at line 1169 of file simutil.py.

Referenced by simutil.simutil.sensitivity().

def simutil.simutil.spectral	(	self,
		image
	)

helper function to get the spectral size from an image

Definition at line 2087 of file simutil.py.

def simutil.simutil.statim	(	self,
		image,
		plot = `True`,
		incell = `None`,
		disprange = `None`,
		bar = `True`,
		showstats = `True`
	)

plot an image (optionally), and calculate its statistics

Definition at line 225 of file simutil.py.

References simutil.simutil.cellsize(), simutil.simutil.msg(), gprof2dot.ParseError.msg, and simutil.simutil.verbose.

def simutil.simutil.tconpc	(	self,
		sf,
		orlim,
		er,
		esq,
		rf
	)

transverse mercator projection               ***
conversion of grid coords to geodetic coords
revised subroutine of t. vincenty  feb. 25, 1985
converted from fortran r. indebetouw jan 2009
********** symbols and definitions ***********************
input:
rf is the reciprocal flattening of ellipsoid
esq = e squared (eccentricity?)    
er is the semi-major axis for grs-80
sf is the scale factor at the cm
orlim is the southernmost parallel of latitude for which the
northing coord is zero at the cm

output:
eps
so is the meridional distance (times the sf) from the
equator to southernmost parallel of lat. for the zone
r is the radius of the rectifying sphere
u0,u2,u4,u6,v0,v2,v4,v6 are precomputed constants for
determination of meridional dist. from latitude
**********************************************************

Definition at line 1592 of file simutil.py.

Referenced by simutil.simutil.utm2long().

def simutil.simutil.tmgeod	(	self,
		n,
		e,
		eps,
		cm,
		fe,
		sf,
		so,
		r,
		v0,
		v2,
		v4,
		v6,
		fn,
		er,
		esq
	)

==================== geodesy =============================

Transverse Mercator Projection
conversion of grid coords n,e to geodetic coords
revised subroutine of t. vincenty  feb. 25, 1985
converted from Fortran R Indebetouw Jan 2009
********** symbols and definitions ***********************
latitude positive north, longitude positive west.
all angles are in radian measure.

input:
n,e       are northing and easting coordinates respectively
er        is the semi-major axis of the ellipsoid
esq       is the square of the 1st eccentricity
cm        is the central meridian of the projection zone
fe        is the false easting value at the cm
eps       is the square of the 2nd eccentricity
sf        is the scale factor at the cm
so        is the meridional distance (times the sf) from the
equator to southernmost parallel of lat. for the zone
r         is the radius of the rectifying sphere
u0,u2,u4,u6,v0,v2,v4,v6 are precomputed constants for
determination of meridianal dist. from latitude
output:
lat,lon   are lat. and long. respectively
conv      is convergence
kp        point scale factor

the formula used in this subroutine gives geodetic accuracy
within zones of 7 degrees in east-west extent.  within state
transverse mercator projection zones, several minor terms of
the equations may be omitted (see a separate ngs publication).
if programmed in full, the subroutine can be used for
computations in surveys extending over two zones.

Definition at line 1507 of file simutil.py.

Referenced by simutil.simutil.utm2long().

def simutil.simutil.utm2long	(	self,
		east,
		north,
		zone,
		datum,
		nors
	)

this program converts universal transverse meractor coordinates to gps
converted from fortran by r. indebetouw jan 2009.
ri also added other datums and ellipsoids in a helper function

header from original UTMS fortran program:
*     this program was originally written by e. carlson
*     subroutines tmgrid, tconst, tmgeod, tconpc,
*     were written by t. vincenty, ngs, in july 1984 .
*     the orginal program was written in september of 1988.
*
*     this program was updated on febuary 16, 1989.  the update was
*     having the option of saving and *81* record file.
*
*
*     this program was updated on april 3, 1990.  the following update
*     were made:
*      1. change from just a choice of nad27 of nad83 reference
*         ellipsoids to; clarke 1866, grs80/wgs84, international, and
*         allow for user defined other.
*      2. allow use of latitudes in southern hemisphere and longitudes
*         up to 360 degrees west.
*
*     this program was updated on december 1, 1993. the following update
*     was made:
*      1. the northings would compute the right latitude in the southern
*         hemishpere.
*      2. the computed latitude on longidutes would be either  in e or w.
*
*****************************************************************     *
*                  disclaimer                                         *
*                                                                     *
*   this program and supporting information is furnished by the       *
* government of the united states of america, and is accepted and     *
* used by the recipient with the understanding that the united states *
* government makes no warranties, express or implied, concerning the  *
* accuracy, completeness, reliability, or suitability of this         *
* program, of its constituent parts, or of any supporting data.       *
*                                                                     *
*   the government of the united states of america shall be under no  *
* liability whatsoever resulting from any use of this program.  this  *
* program should not be relied upon as the sole basis for solving a   *
* problem whose incorrect solution could result in injury to person   *
* or property.                                                        *
*                                                                     *
*   this program is property of the government of the united states   *
* of america.  therefore, the recipient further agrees not to assert  *
* proprietary rights therein and not to represent this program to     *
* anyone as being other than a government program.                    *
*                                                                     *
***********************************************************************

this is the driver program to compute latitudes and longitudes from
the utms for each zone

input:
northing, easting
zone, datum
nors=N/S

determined according to datum:
er = equatorial radius of the ellipsoid (semi-major axis)
rf = reciprocal of flatting of the ellipsod
f  =
esq= e squared

calculated according to longitude and zone:
rad = radian conversion factor
cm = central meridian ( computed using the longitude)
sf = scale factor of central meridian ( always .9996 for utm)
orlim = southernmost parallel of latitude ( always zero for utm)
r, a, b, c, u, v, w = ellipsoid constants used for computing
meridional distance from latitude
so = meridional distance (multiplied by scale factor )
from the equator to the southernmost parallel of latitude
( always zero for utm)

Definition at line 1723 of file simutil.py.

References simutil.simutil.getdatum(), simutil.simutil.msg(), gprof2dot.ParseError.msg, simutil.simutil.tconpc(), simutil.simutil.tmgeod(), and simutil.simutil.verbose.

Referenced by simutil.simutil.utm2xyz().

def simutil.simutil.utm2xyz	(	self,
		easting,
		northing,
		elevation,
		zone,
		datum,
		nors
	)

Definition at line 1931 of file simutil.py.

References simutil.simutil.long2xyz(), and simutil.simutil.utm2long().

def simutil.simutil.wrapang	(	self,
		ang,
		target,
		period = `360.0`
	)

Returns ang wrapped so that it is within +-period/2 of target.

Definition at line 784 of file simutil.py.

References simutil.simutil.noisetemp().

Referenced by simutil.simutil.average_direction(), and simutil.simutil.median_direction().

def simutil.simutil.write_pointings	(	self,
		filename,
		pointings,
		time = `1.`
	)

write pointing list to file containing epoch, ra, dec,
and scan time (optional,in sec).

Example of an output file:
#Epoch     RA          DEC      TIME(optional)
J2000 23h59m28.10 -019d52m12.35 10.0
J2000 23h59m32.35 -019d52m12.35 10.0
J2000 23h59m36.61 -019d52m12.35 60.0

Definition at line 577 of file simutil.py.

References tests.test_imcontsub.list.