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Text in red shows what was adopted for the revised draft presented further below.
Jump to the comments added in addition to the issues.
1. Source_Name
(Ballet) I do not believe it is appropriate to define TLMIN/MAX for a string column (or is it ?). In any case, most likely we will number the versions of our catalog as everybody does, so that will be 1GL, 2GL, ... Are those registered at the IAU already ?
(Digel) I agree. The LAT catalog designation is not registered yet. I bet that the SSAC or SWG would like to have the responsibility of picking the letters to use, although there are not very many obvious choices. GL looks good to me. I imagine that GBM sources mostly will be given GRB ######-type names.
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XTENSION 'BINTABLE' Extension type BITPIX 8 Bits per pixel - assume single precision floating point NAXIS 2 # of axes=2 NAXIS1 ### Number of bytes per row NAXIS2 ### Number of point sources in file (~1e4) TFIELDS 27 Number of fields per row CHECKSUM Checksum for entire HDU DATASUM Checksum for data table TELESCOP 'GLAST' Name of mission generating data INSTRUME 'LAT' EXTNAME 'LAT_Point_Source_Catalog' Name of the extension TIMESYS 'TT' Time system used in time keywords MJDREF 51910 MJD date of reference epoch TIMEUNIT 's' Time unit used in TSTART, TSTOP and TZERO keywords TSTART ### Time of start of observation offset from TZERO in units of TIMEUNIT TSTOP ### Time of end of observation offset from TZERO in units of TIMEUNIT HDUCLASS 'OGIP ' Format conforms to OGIP standard HDUDOC '?' HDUVERS '1.0.0 ' HDUCLAS1 'SRCLIST' ? TTYPE1 'Source_Name' Source name in standard format, e.g., 1GL J123456-012345 TFORM1 '18A ' Character string TUNIT1 'none' Units of field TTYPE2 'RA' TFORM2 '1E ' Floating point TUNIT2 'deg' TLMIN2 0.0 Minimum value TLMAX2 360.0 Maximum value TTYPE3 'DEC' DEC TFORM3 'E ' Floating point TUNIT3 'deg' TLMIN3 -90.0 Minimum value TLMAX3 90.0 Maximum value TTYPE4 'Conf_68_SemiMajor' Semimajor axis, 68% containment confidence region TFORM4 '1E ' Floating point TUNIT4 'deg' TLMIN4 0.0 Minimum value TLMAX4 360.0 Maximum value TTYPE5 'Conf_68_SemiMinor' Semiminor, axis, 68% containment confidence region TFORM5 '1E ' Floating point TUNIT5 'deg' TLMIN5 0.0 Minimum value TLMAX5 360.0 Maximum value TTYPE6 'Conf_68_PosAng' Position angle, 68% containment confidence region, E of N TFORM6 '1E ' Floating point TUNIT6 'deg' TLMIN6 0.0 Minimum value TLMAX6 360.0 Maximum value TTYPE7 'Conf_95_SemiMajor' Semimajor axis, 95% containment confidence region TFORM7 '1E ' Floating point TUNIT7 'deg' TLMIN7 0.0 Minimum value TLMAX7 360.0 Maximum value TTYPE8 'Conf_95_SemiMinor' Semiminor, axis, 95% containment confidence region TFORM8 '1E ' Floating point TUNIT8 'deg' TLMIN8 0.0 Minimum value TLMAX8 360.0 Maximum value TTYPE9 'Conf_95_PosAng' Position angle, 95% containment confidence region, E of N TFORM9 '1E ' Floating point TUNIT9 'deg' TLMIN9 0.0 Minimum value TLMAX9 360.0 Maximum value TTYPE6 'Flux100' Average flux >100 MeV TFORM6 '1E ' Floating point TUNIT6 'cm**(-2) s**(-1)' TLMIN6 0.0 Minimum value TLMAX6 ### Maximum value TTYPE7 'Unc_Flux100' Uncertainty (1-sigma) in average flux >100 MeV TFORM7 '1E ' Floating point TUNIT7 'cm**(-2) s**(-1)' TLMIN7 0.0 Minimum value TLMAX7 ### Maximum value TTYPE8 'Spectral_Index' Photon spectral index, >100 MeV TFORM8 '1E ' Floating point TUNIT8 'none' Dimensionless TLMIN8 -10.0 Minimum value TLMAX8 10.0 Maximum value TTYPE8 'Unc_Spectral_Index' 1-sigma uncertainty, photon spectral index TFORM8 '1E ' Floating point TUNIT8 'none' Dimensionless TLMIN8 0.0 Minimum value TLMAX8 10.0 Maximum value TTYPE9 'Flux300' Average flux >300 MeV TFORM9 '1E ' Floating point TUNIT9 'cm**(-2) s**(-1)' TLMIN9 0.0 Minimum value TLMAX9 1.0 Maximum value TTYPE10 'Unc_Flux300' Uncertainty (1-sigma) in average flux >300 MeV TFORM10 '1E ' Floating point TUNIT10 'cm**(-2) s**(-1)' TLMIN10 0.0 Minimum value TLMAX10 1.0 Maximum value TTYPE11 'Flux1000' Average flux >1000 MeV TFORM11 '1E ' Floating point TUNIT11 'cm**(-2) s**(-1)' TLMIN11 0.0 Minimum value TLMAX11 1.0 Maximum value TTYPE12 'Unc_Flux1000' Uncertainty (1-sigma) in average flux >1000 MeV TFORM12 '1E ' Floating point TUNIT12 'cm**(-2) s**(-1)' TLMIN12 0.0 Minimum value TLMAX12 1.0 Maximum value TTYPE13 'Flux3000' Average flux >3000 MeV TFORM13 '1E ' Floating point TUNIT13 'cm**(-2) s**(-1)' TLMIN13 0.0 Minimum value TLMAX13 1.0 Maximum value TTYPE14 'Unc_Flux3000' Uncertainty (1-sigma) in average flux >3000 MeV TFORM14 '1E ' Floating point TUNIT14 'cm**(-2) s**(-1)' TLMIN14 0.0 Minimum value TLMAX14 1.0 Maximum value TTYPE15 'Variability_Index' Flux variability index (TBD) TFORM15 '1E ' Floating point TUNIT15 'none' Dimensionless TLMIN15 ### Minimum value TLMAX15 ### Maximum value TTYPE16 'Signif_Avg' Detection significance (whole time interval) TFORM16 '1E ' Floating point TUNIT16 'none' Dimensionless TLMIN16 0.0 Minimum value TLMAX16 1.0E9 Maximum value TTYPE17 'Signif_Peak' Detection significance (peak) TFORM17 '1E ' Floating point TUNIT17 'none' Dimensionless TLMIN17 0.0 Minimum value TLMAX17 1.0E9 Maximum value TTYPE18 'Flux_Peak' Peak flux (>100 MeV) for time interval above TFORM18 '1E ' Floating point TUNIT18 'cm**(-2) s**(-1)' TLMIN18 0.0 Minimum value TLMAX18 1.0 Maximum value TTYPE19 'Unc_Peak_Flux' Uncertainty (1-sigma) in peak flux >100 MeV TFORM19 '1E ' Floating point TUNIT19 'cm**(-2) s**(-1)' TLMIN19 0.0 Minimum value TLMAX19 1.0 Maximum value TTYPE20 'Time_Peak' Center of time interval of peak significance TFORM20 '1D ' Double precision TUNIT20 's' TLMIN20 0.0 Minimum value TLMAX20 ### Maximum value TZERO20 ### TTYPE21 'Peak_Interval' Duration of time interval of peak significance TFORM21 '1D ' Double precision TUNIT21 's' TLMIN21 0 Minimum value TLMAX21 ### Maximum value TTYPE22 'Flux_History' Flux (>100 MeV) history (monthly) TFORM22 '12E ' Floating point array, 12 months TUNIT22 'cm**(-2) s**(-1)' TLMIN22 -1.0 Minimum value TLMAX22 1.0 Maximum value TTYPE23 'Flux_Unc_History' Flux uncertainty (1-sigma, >100 MeV) history TFORM23 '12E ' Floating point array, 12 months TUNIT23 'cm**(-2) s**(-1)' TLMIN23 0.0 Minimum value TLMAX23 1.0 Maximum value TTYPE24 'Hist_Start' Start of time intervals of flux history TFORM24 '12E ' Floating point array TUNIT24 's' TLMIN24 0.0 Minimum value TLMAX24 ### Maximum value TZERO24 ### TTYPE25 'ID_Counterpart' Source counterpart (if any) TFORM25 '20A ' Character string TUNIT25 'none' Dimensionless TTYPE26 'Conf_Counterpart' Confidence of association of counterpart with source TFORM26 '1I ' Index, 1 = Figure of Merit, 2 = Correlated variability TUNIT26 'none' Dimensionless TLMIN26 0 Minimum value TLMAX26 2 Maximum value TTYPE27 'Flags' Flags (TBD) for catalog entry TFORM27 '1I ' TUNIT27 'none' Dimensionless END |
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Comments on the draft of 26 October 2005
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(Luigi Foschini)
Keywords to add:
EXTREL: release number of the template for the FITS header, to take into account for future developments and changes in the header.
CREATOR: the name and version of the executable that generated the FITS file.
CONFIGUR: name and version of the software system under which the executable run (e.g. SAE v X.x).
DATE: date of the creation of the FITS file.
TIMEREF: time reference frame (LOCAL, SOLAR SYSTEM, etc...).
TIMEUNIT: I suggest to change to days (JD), so that to use MJDREF as TZERO and it is possible to avoid huge numbers; TSTART and TSTOP should be updated accordingly.
VERSION: version of the catalog.
RADECSYS: FK5 default; stellar reference frame.
EQUINOX: 2000.0 default; coordinate system equinox.
I would add also a new column "NOTES" (character string) where to place some comments, like, for example, other names of the sources (e.g. the corresponding name in the 3rd EGRET catalog, etc...).
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