Data model: photoUSNOB

General description: Match of objects in a field of an SDSS imaging catalog to the USNO-B catalog. These matches are to any objects which are RUN_PRIMARY according to the local resolve (see resolve documentation).

Naming convention: photoUSNOB-RUN6-CAMCOL-FIELD4.fits

Approximate size: 20 kbytes.

File type: FITS

Read by products: sas

Written by products: photoop

Required header keywords:

• P_RESOLV (string): path for PHOTO_RESOLVE variable
• P_CALIB (string): path for PHOTO_CALIB variable

Required column names:

• run (int32): Run number
• camcol (int32): Camera column
• field (int32): Field number
• id (int32): The object id within a field. Usually changes between reruns of the same field
• rerun (string): Rerun number
• objID (int64): Unique SDSS identifier composed from [skyVersion,rerun,run,camcol,field,obj].
• run_resolve_status (int32): status flag for local resolve
• ra (float64): SDSS right ascension, J2000 (deg)
• dec (float64): SDSS declination, J2000 (deg)
• USNO_RA (float64): J2000 right ascension in USNO-B1.0 (deg)
• USNO_DEC (float64): J2000 declination in USNO-B1.0 (deg)
• USNO_RAERR (float64): error in R.A. (arcsec)
• USNO_DECERR (float64): error in Dec (arcsec)
• USNO_MEANEPOCH (float64): mean epoch of RA/Dec (years)
• USNO_MURA (float32): proper motion in RA (mas)
• USNO_MUDEC (float32): proper motion in Dec (mas)
• USNO_PROPERMOTION (float32): total proper motion (0)
• USNO_ANGLE (float32): position angle of proper motion (East of North) (deg)
• USNO_MURAERR (float32): error in proper motion in RA (mas)
• USNO_MUDECERR (float32): error in proper motion in Dec (mas)
• USNO_MUPROB (float32): probability of proper motion
• USNO_MUFLAG (int32): proper motion flag (0 no, 1 yes)
• USNO_SFITRA (float32): sigma of individual observations around best fit motion in RA (mas)
• USNO_SFITDEC (float32): sigma of individual observations around best fit motion in RA (mas)
• USNO_NFITPT (int32): number of observations used in the fit
• USNO_MAG[5] (float32): magnitude in each survey, OEJFN magnitudes
• USNO_FLDID[5] (int16): field id in each survey
• USNO_SG[5] (int8): star/galaxy separation flag in each survey (values of 0 to 3 are probably stellar, values of 8 to 11 are probably non-stellar)
• USNO_FLDEPOCH[5] (float32): epoch of observation in each survey (OEJFN)