/usr/include/astrometry/nomad.h is in astrometry.net 0.46-0ubuntu2.
This file is owned by root:root, with mode 0o644.
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This file is part of the Astrometry.net suite.
Copyright 2006, 2007 Dustin Lang, Keir Mierle and Sam Roweis.
The Astrometry.net suite is free software; you can redistribute
it and/or modify it under the terms of the GNU General Public License
as published by the Free Software Foundation, version 2.
The Astrometry.net suite 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with the Astrometry.net suite ; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef NOMAD_H
#define NOMAD_H
#include <stdint.h>
#include "starutil.h"
#define NOMAD_RECORD_SIZE 88
/*
See: http://www.nofs.navy.mil/nomad/nomad_readme.html
*/
struct nomad_entry {
// [degrees]
double ra;
double dec;
// [degrees]
float sigma_racosdec;
float sigma_dec;
// [arcsec/yr]
float pm_racosdec;
float pm_dec;
// [arcsec/yr]
float sigma_pm_racosdec;
float sigma_pm_dec;
// [yr]
float epoch_ra;
float epoch_dec;
// mag
// (30.000 in any magnitude field indicates "no data".)
// (30.001 = "no data" but ...)
float mag_B;
float mag_V;
float mag_R;
float mag_J;
float mag_H;
float mag_K;
int32_t usnob_id;
int32_t twomass_id;
int32_t yb6_id;
int32_t ucac2_id;
int32_t tycho2_id;
// all these take values from the "nomad_src" enum.
uint8_t astrometry_src;
uint8_t blue_src;
uint8_t visual_src;
uint8_t red_src;
anbool usnob_fail; // UBBIT "Fails Blaise's test for USNO-B1.0 star"
anbool twomass_fail; // TMBIT "Fails Roc's test for clean 2MASS star"
anbool tycho_astrometry; // TYBIT "Astrometry comes from Tycho2"
anbool alt_radec; // XRBIT "Alt correlations for same (RA,Dec)"
// This bit is NEVER set in NOMAD.
//anbool alt_2mass; // ITMBIT "Alt correlations for same 2MASS ID"
anbool alt_ucac; // IUCBIT "Alt correlations for same UCAC-2 ID"
anbool alt_tycho; // ITYBIT "Alt correlations for same Tycho2 ID"
anbool blue_o; // OMAGBIT "Blue magnitude from O (not J) plate"
anbool red_e; // EMAGBIT "Red magnitude from E (not F) plate"
anbool twomass_only; // TMONLY "Object found only in 2MASS cat"
anbool hipp_astrometry; // HIPAST "Ast from Hipparcos (not Tycho2) cat"
anbool diffraction; // SPIKE "USNO-B1.0 diffraction spike bit set"
anbool confusion; // TYCONF "Tycho2 confusion flag"
anbool bright_confusion; // BSCONF "Bright star has nearby faint source"
anbool bright_artifact; // BSART "Faint source is bright star artifact"
anbool standard; // USEME "Recommended astrometric standard"
// This bit is NEVER set in NOMAD.
//anbool external; // EXCAT "External, non-astrometric object"
// this is a staging area for FITS i/o.
uint8_t flags[2];
// sequence number assigned by us (it's not in the original catalogue),
// composed of the 1/10 degree DEC zone (top 11 bits) and the sequence
// number within the zone (bottom 21 bits).
uint32_t nomad_id;
};
typedef struct nomad_entry nomad_entry;
enum nomad_src {
NOMAD_SRC_NONE = 0,
NOMAD_SRC_USNOB,
NOMAD_SRC_2MASS,
NOMAD_SRC_YB6,
NOMAD_SRC_UCAC2,
NOMAD_SRC_TYCHO2,
NOMAD_SRC_HIPPARCOS,
};
int nomad_parse_entry(nomad_entry* entry, const void* encoded);
#endif
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