line |
stmt |
bran |
cond |
sub |
pod |
time |
code |
1
|
|
|
|
|
|
|
/* |
2
|
|
|
|
|
|
|
*+ |
3
|
|
|
|
|
|
|
* Name: |
4
|
|
|
|
|
|
|
* palAoppat |
5
|
|
|
|
|
|
|
|
6
|
|
|
|
|
|
|
* Purpose: |
7
|
|
|
|
|
|
|
* Recompute sidereal time to support apparent to observed place |
8
|
|
|
|
|
|
|
|
9
|
|
|
|
|
|
|
* Language: |
10
|
|
|
|
|
|
|
* Starlink ANSI C |
11
|
|
|
|
|
|
|
|
12
|
|
|
|
|
|
|
* Type of Module: |
13
|
|
|
|
|
|
|
* Library routine |
14
|
|
|
|
|
|
|
|
15
|
|
|
|
|
|
|
* Invocation: |
16
|
|
|
|
|
|
|
* void palAoppat( double date, double aoprms[14] ); |
17
|
|
|
|
|
|
|
|
18
|
|
|
|
|
|
|
* Arguments: |
19
|
|
|
|
|
|
|
* date = double (Given) |
20
|
|
|
|
|
|
|
* UTC date/time (modified Julian Date, JD-2400000.5) |
21
|
|
|
|
|
|
|
* (see palAoppa description for comments on leap seconds) |
22
|
|
|
|
|
|
|
* aoprms = double[14] (Given & Returned) |
23
|
|
|
|
|
|
|
* Star-independent apparent-to-observed parameters. Updated |
24
|
|
|
|
|
|
|
* by this routine. Requires element 12 to be the longitude + |
25
|
|
|
|
|
|
|
* eqn of equinoxes + sidereal DUT and fills in element 13 |
26
|
|
|
|
|
|
|
* with the local apparent sidereal time (in radians). |
27
|
|
|
|
|
|
|
|
28
|
|
|
|
|
|
|
* Description: |
29
|
|
|
|
|
|
|
* This routine recomputes the sidereal time in the apparent to |
30
|
|
|
|
|
|
|
* observed place star-independent parameter block. |
31
|
|
|
|
|
|
|
|
32
|
|
|
|
|
|
|
* Authors: |
33
|
|
|
|
|
|
|
* TIMJ: Tim Jenness (JAC, Hawaii) |
34
|
|
|
|
|
|
|
* PTW: Patrick T. Wallace |
35
|
|
|
|
|
|
|
* {enter_new_authors_here} |
36
|
|
|
|
|
|
|
|
37
|
|
|
|
|
|
|
* Notes: |
38
|
|
|
|
|
|
|
* - See palAoppa for more information. |
39
|
|
|
|
|
|
|
* - The star-independent parameters are not treated as an opaque |
40
|
|
|
|
|
|
|
* struct in order to retain compatibility with SLA. |
41
|
|
|
|
|
|
|
|
42
|
|
|
|
|
|
|
* History: |
43
|
|
|
|
|
|
|
* 2012-08-24 (TIMJ): |
44
|
|
|
|
|
|
|
* Initial version, ported from Fortran SLA source. |
45
|
|
|
|
|
|
|
* Adapted with permission from the Fortran SLALIB library. |
46
|
|
|
|
|
|
|
* {enter_further_changes_here} |
47
|
|
|
|
|
|
|
|
48
|
|
|
|
|
|
|
* Copyright: |
49
|
|
|
|
|
|
|
* Copyright (C) 1995 Rutherford Appleton Laboratory |
50
|
|
|
|
|
|
|
* Copyright (C) 2012 Science and Technology Facilities Council. |
51
|
|
|
|
|
|
|
* All Rights Reserved. |
52
|
|
|
|
|
|
|
|
53
|
|
|
|
|
|
|
* Licence: |
54
|
|
|
|
|
|
|
* This program is free software; you can redistribute it and/or |
55
|
|
|
|
|
|
|
* modify it under the terms of the GNU General Public License as |
56
|
|
|
|
|
|
|
* published by the Free Software Foundation; either version 3 of |
57
|
|
|
|
|
|
|
* the License, or (at your option) any later version. |
58
|
|
|
|
|
|
|
* |
59
|
|
|
|
|
|
|
* This program is distributed in the hope that it will be |
60
|
|
|
|
|
|
|
* useful, but WITHOUT ANY WARRANTY; without even the implied |
61
|
|
|
|
|
|
|
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
62
|
|
|
|
|
|
|
* PURPOSE. See the GNU General Public License for more details. |
63
|
|
|
|
|
|
|
* |
64
|
|
|
|
|
|
|
* You should have received a copy of the GNU General Public License |
65
|
|
|
|
|
|
|
* along with this program; if not, write to the Free Software |
66
|
|
|
|
|
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
67
|
|
|
|
|
|
|
* MA 02110-1301, USA. |
68
|
|
|
|
|
|
|
|
69
|
|
|
|
|
|
|
* Bugs: |
70
|
|
|
|
|
|
|
* {note_any_bugs_here} |
71
|
|
|
|
|
|
|
*- |
72
|
|
|
|
|
|
|
*/ |
73
|
|
|
|
|
|
|
|
74
|
|
|
|
|
|
|
#include "pal.h" |
75
|
|
|
|
|
|
|
|
76
|
|
|
|
|
|
|
static double pal__Gmst( double ut1 ); |
77
|
|
|
|
|
|
|
|
78
|
8
|
|
|
|
|
|
void palAoppat( double date, double aoprms[14] ) { |
79
|
8
|
|
|
|
|
|
aoprms[13] = pal__Gmst(date) + aoprms[12]; |
80
|
8
|
|
|
|
|
|
} |
81
|
|
|
|
|
|
|
|
82
|
|
|
|
|
|
|
/* Use a private implementation of palGmst for testing that matches |
83
|
|
|
|
|
|
|
the SLA rather than SOFA/ERFA implementation. This is used for comparing |
84
|
|
|
|
|
|
|
SLA with PAL refraction code. */ |
85
|
|
|
|
|
|
|
|
86
|
|
|
|
|
|
|
#include "math.h" |
87
|
|
|
|
|
|
|
#include "palmac.h" |
88
|
|
|
|
|
|
|
|
89
|
8
|
|
|
|
|
|
static double pal__Gmst( double ut1 ) { |
90
|
|
|
|
|
|
|
|
91
|
|
|
|
|
|
|
double tu; |
92
|
|
|
|
|
|
|
double gmst; |
93
|
|
|
|
|
|
|
|
94
|
|
|
|
|
|
|
/* Julian centuries from fundamental epoch J2000 to this UT */ |
95
|
8
|
|
|
|
|
|
tu=(ut1-51544.5)/36525; |
96
|
|
|
|
|
|
|
|
97
|
|
|
|
|
|
|
/* GMST at this UT */ |
98
|
8
|
|
|
|
|
|
gmst=palDranrm(fmod(ut1,1.0)*PAL__D2PI+ |
99
|
8
|
|
|
|
|
|
(24110.54841+ |
100
|
8
|
|
|
|
|
|
(8640184.812866+ |
101
|
24
|
|
|
|
|
|
(0.093104-6.2e-6*tu)*tu)*tu)*PAL__DS2R); |
102
|
8
|
|
|
|
|
|
return gmst; |
103
|
|
|
|
|
|
|
} |