1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
#-----------------------------------------------------------------------------
#
# WCSLIB 4.8 - an implementation of the FITS WCS standard.
# Copyright (C) 1995-2011, Mark Calabretta
#
# This file is part of WCSLIB.
#
# WCSLIB is free software: you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option)
# any later version.
#
# WCSLIB is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
# more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with WCSLIB. If not, see <http://www.gnu.org/licenses/>.
#
# Correspondence concerning WCSLIB may be directed to:
# Internet email: mcalabre@atnf.csiro.au
# Postal address: Dr. Mark Calabretta
# Australia Telescope National Facility, CSIRO
# PO Box 76
# Epping NSW 1710
# AUSTRALIA
#
# Author: Mark Calabretta, Australia Telescope National Facility
# http://www.atnf.csiro.au/~mcalabre/index.html
# $Id: wcstab.keyrec,v 4.8.1.1 2011/08/15 08:07:06 cal103 Exp cal103 $
#-----------------------------------------------------------------------------
# List of FITS header keyrecords used by 'twcstab' to construct a FITS file
# for testing wcstab() and fits_read_wcstab(). The coordinate arrays and
# index vectors in the binary tables extensions are generated by twcstab
# itself.
#
# Lines in this file beginning with '#' are ignored by twcstab.
#-----------------------------------------------------------------------------
SIMPLE = T / Standards-conformant FITS format
BITPIX = -32 / IEEE single precision floating point
NAXIS = 4 / Four image axes
NAXIS1 = 256 / Length of 1st image axis - fastest varying
NAXIS2 = 128 / Length of 2nd image axis
NAXIS3 = 4 / Length of 3rd image axis
NAXIS4 = 1 / Length of 4th image axis - slowest varying
EXTEND = T / Binary table extensions contain lookup tables.
COMMENT -----------------------------------------------------------------------
COMMENT Of the four -TAB coordinate axes, the first two celestial axes are
COMMENT associated with a 2-D lookup table; the third spectral axis contains
COMMENT a list of four wavelengths in the radio, infrared, optical, and x-ray
COMMENT regimes; and the fourth time axis contains a list of observation
COMMENT dates. Axes 3 and 4 are adapted from Table 11 of WCS Paper III.
COMMENT
COMMENT There are two separate bintables holding the -TAB arrays that differ
COMMENT only in EXTVER. The first holds the 2-D celestial table, and the
COMMENT second holds the two 1-D spectral and time coordinate tables.
COMMENT -----------------------------------------------------------------------
WCSAXES = 4 / Four coordinate axes
WCSNAME = '-TAB test file' / Name of this system
CRPIX1 = 129.0 / Pixel coordinate of reference point
CRPIX2 = 65.0 / Pixel coordinate of reference point
PC1_1 = 0.996194698 / 5 deg rotation matrix element
PC1_2 = 0.087155743 / 5 deg rotation matrix element
PC2_1 = -0.087155743 / 5 deg rotation matrix element
PC2_2 = 0.996194698 / 5 deg rotation matrix element
CDELT1 = 1.0 / Index (psi_m) changes by one per pixel
CDELT2 = 1.0 / Index (psi_m) changes by one per pixel
CRVAL1 = 136.0 / Table index (Psi_m) at the reference point
CRVAL2 = 76.0 / Table index (Psi_m) at the reference point
CTYPE1 = 'RA---TAB' / Right ascension in lookup table
CUNIT1 = 'deg' / Right ascension units
CNAME1 = 'Right ascension (J2000)' / Axis name for labelling purposes
PS1_0 = 'WCS-TABLE' / EXTNAME of bintable extension for -TAB arrays
PV1_1 = 1 / EXTVER of bintable extension for -TAB arrays
PV1_2 = 1 / EXTLEVEL of bintable extension for -TAB arrays
PS1_1 = 'CelCoords' / Celestial coordinate array
PS1_2 = 'RAIndex' / Right ascension index vector
PV1_3 = 1 / Axis number in coordinate array
CTYPE2 = 'DEC--TAB' / Declination in a slant zenithal projection
CUNIT2 = 'deg' / Declination units
CNAME2 = 'Declination (J2000)' / Axis name for labelling purposes
PS2_0 = 'WCS-TABLE' / EXTNAME of bintable extension for -TAB arrays
PV2_1 = 1 / EXTVER of bintable extension for -TAB arrays
PV2_2 = 1 / EXTLEVEL of bintable extension for -TAB arrays
PS2_1 = 'CelCoords' / Celestial coordinate array
PS2_2 = 'DecIndex' / Declination index vector
PV2_3 = 2 / Axis number in coordinate array
RADESYS = 'FK5' / Mean equatorial coordinates, IAU 1984 system
EQUINOX = 2000.0 / [yr] Equinox of equatorial coordinates
CRPIX3 = 0.5 / Spectral bin initial edge of initial pixel
CRPIX4 = 1.0 / Temporal bins are at begin/end time
PC3_3 = 1.0 / Linear transformation matrix element
PC3_4 = 0.0 / Linear transformation matrix element
PC4_3 = 1.0 / Linear transformation matrix element
PC4_4 = 1.0 / Linear transformation matrix element
CDELT3 = 1.0 / Index (psi_m) changes by one per pixel
CDELT4 = 1.0 / Index (psi_m) changes by one per pixel
CRVAL3 = 0.5 / Table index (Psi_m) at the reference point
CRVAL4 = 0.0 / Table index (Psi_m) at the reference point
CTYPE3 = 'WAVE-TAB' / Wavelength axis by lookup table
CUNIT3 = 'm' / Wavelength in metres
CNAME3 = 'Wavelength' / Axis name for labelling purposes
PS3_0 = 'WCS-TABLE' / EXTNAME of bintable extension for -TAB arrays
PV3_1 = 2 / EXTVER of bintable extension for -TAB arrays
PV3_2 = 1 / EXTLEVEL of bintable extension for -TAB arrays
PS3_1 = 'WaveCoord' / Wavelength coordinate array
PS3_2 = 'WaveIndex' / Wavelength index vector
PV3_3 = 1 / Axis number in coordinate array
CTYPE4 = 'TIME-TAB' / Time axis by lookup table
CUNIT4 = 'a' / Time in years
CNAME4 = 'Observation date' / Axis name for labelling purposes
PS4_0 = 'WCS-TABLE' / EXTNAME of bintable extension for -TAB arrays
PV4_1 = 2 / EXTVER of bintable extension for -TAB arrays
PV4_2 = 1 / EXTLEVEL of bintable extension for -TAB arrays
PS4_1 = 'TimeCoord' / Time coordinate array
PS4_2 = 'TimeIndex' / Time index vector
PV4_3 = 1 / Axis number in coordinate array
END
|
