Follow UsTUES FITS Keywords
References and comments on FITS keywords are listed below. See main page for background.
| Keyword | Reference(s) | Comments/Notes |
|---|---|---|
| GENERAL KEYWORDS | ||
| EXTNAME | See FITS standards document | VO spectral container format |
| EQUINOX | from TUES EQUINOX keyword | Comments here |
| RADECSYS | Barnstedt, private communication (4/08) | FK5 |
| TIMESYS | from DATE keyword comment | UTC |
| MJDREF | 0.00000 | [d] MJD zero point for times |
| SPECSYS | Barnstedt, et al, A&A Supp. 134,561-567, 1999 | heliocentric wavelengths |
| VOCLASS | 'SPECTRUM V1.0' | VO Data Model |
| VOSEGT | 'SPECTRUM' | Segment type |
| DATALEN | derived from data | [ ] Number of points in spectrum |
| DSSOURCE | 'POINTED' | Survey or Pointed |
| DATA ID KEYWORDS | ||
| DATE | from TUES DATE keyword | Processing-Creation Date |
| VODATE | from IDL "today" command | Curation Date |
| VOREF | 'http://archive.stsci.edu/vodocs/hst/tues' | URL for Documentation |
| DS_IDENT | 'ads/sa.orfeus#tues2290_2_6_ord45' | Publishers Data Set ID |
| VERSION | '1.0' | Processing Version |
| COLLECT | 'TUES' | Data Set Collection |
| INSTRUME | 'TUES' | Instrument |
| TELESCOP | 'ORFEUS' | Telescope |
| FILENAME | derived from TUES FILENAME keyword | File Name |
| CR_IDENT | derived from FILENAME keyword | Internal dataset ID |
| CRETYPE | 'Archival' | Not an on-the-fly dataset |
| CURATION KEYWORDS | ||
| VOPUB | 'MAST' | VO Publishing Authority |
| AUTHOR | 'TUES project' | Creator |
| VOPUBID | 'archive.stsci.edu' | URI for VO Publisher |
| VOLOGO | 'http://archive.stsci.edu/images/100.mastlogo.gif' | MAST logo |
| VOVER | '1.0' | VO Curation version |
| VORIGHTS | 'PUBLIC' | Data is public |
| CONTRIB1 | '2290 ' | PEP proposal identifier |
| CONTACT | 'archive help desk' | Comments here |
| 'archive@stsci.edu' | Comments here | |
| TARGET KEYWORDS | ||
| OBJECT | from OBJECT keyword | proposer's target name |
| TITLE | derived from file name and target name | filename, object |
| RA_TARG | from RA_OBJ keyword | [deg] right ascension of target |
| DEC_TARG | from DEC_OBJ keyword | [deg] declination of target |
| WCS Paper 3 Keywords | ||
| 1S2_1 | 'WAVE' | Column name with spectral coordinates |
| 1CYTP2 | 'WAVE-TAB' | Spectral coordinate is wavelength |
| 1S3_1 | 'WAVE' | Column name with spectral coordinates |
| 1CYTP3 | 'WAVE-TAB' | Spectral coordinate is wavelength |
| COVERAGE: SPATIAL | ||
| RA | from RA_OBJ keyword | [deg] right ascension of aperture replaced with target RA |
| DEC | from DEC_OBJ keyword | [deg] declination of aperture replaced with target Dec |
| APERTURE | Barnstedt, et al, A&A Supp. 134,561-567, 1999. | [arcsec] 20" Aperture (width or lengthxwidth) |
| COVERAGE: TEMPORAL | ||
| DATE-OBS | from DATE-OBS keyword | UT observation start time |
| EXPOSURE | from EXPTIME keyword | [sec] exposure duration |
| TSTART | derived from MJDREF and TSTART keywords | [d] MJD exposure start time |
| TSTOP | from MJDREF and TSTOP keywords | [d] MJD exposure stop time |
| TMID | derived from TSTART and TSTOP | [d] MJD exposure mid time |
| COVERAGE: SPECTRAL | ||
| SPECSDIM | '1.0E-10 L' | Comments here |
| SPEC_CAL | 'Calibrated' | Calibrated spectral coordinate |
| SPEC_ERR | Barnstedt, et al, A&A Supp. 134,561-567, 1999. | [angstrom] 0.0500 Internal Wavelength statistical error |
| SPECBAND | 'Far-UV' | Spectral Band(s) |
| SPEC_VAL | derived from data | [angstrom] Mean Wavelength |
| SPEC_BW | derived value | [angstrom] Bandpass Width Wmax - Wmin |
| SPEC_FIL | derived value | 1.0 (no gaps within one order) |
| SPEC_RP | Barnstedt, et al, A&A Supp. 134,561-567, 1999 (may be a conservative estimate) | [ ] 10,000 average resolving power W/dW |
| COVERAGE: OBSERVABLE | ||
| FLUXSDIM | '1.0E+7 ML-1T-3' | Flux SIDim |
| FLUX_CAL | 'Calibrated' | Calibrated Fluxes |
| STAT_ERR | Barnstedt, private communication (4/08) | [ ] 10% flux error |
| DER_SNR | Stoehr et all. 2007 Space Telescope coordination Fac. NL 42,4. See der_snr.pdf | [ ] Mean signal-to-noise ratio |
| FLUXAVG | derived value | [erg/cm**2/s/angstrom] Average Flux |
| FLUXMAX2 | derived value | [erg/cm**2/s/angstrom] 98% Maximum Flux |
| SPECDISP | derived value | [angstrom/pixel] Dispersion |
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