Hi,
Pasted below is a AAVSO report of RV Cen in B and V. It was generated from 2 images in VPhot Time Series.
Can someone supply the missing definitions of the following that are in the Notes section of that attached file?
Note this is an ENSEMBLE of comp stars, not transformed.
CDEC
CMAGINS = the average of the ensemble comp star instrumental magnitudes
CRA
CREFMAG = the average of the ensemble comp star reference magnitudes
ENSTYPE
KDEC = dec of check star in degrees
KMAGINS = the check star instrumental magnitude
KMAGSTD = the calculated check star standard mag (CREFMAG - CMAGINS = KMAGSTD - KMAGINS)
KRA = ra of check star in degrees
KREFERR = the error of the check reference magnitude (from chart)
KREFMAG = the reference magnitudes of check star (from chart)
OBSERVAT = entered by user
PROJNAME = entered by user
VMAGINS = the target star instrumental magnitude
What is chard ID 260301 (in attached file)?
That chart ID is different from the ID gotten from VPhot Images…Catalogs–>Show AAVSO Chart
(I got X41958FP)
What is KREFERR used for?
I don’t get what CDEC and CRA could mean when ENSEMBLE.
Thanks
#TYPE=EXTENDED
#OBSCODE=FPIA
#SOFTWARE=VPhot 4.0.79
#DELIM=,
#DATE=JD
#OBSTYPE=CCD
#NAME,DATE,MAG,MERR,FILT,TRANS,MTYPE,CNAME,CMAG,KNAME,KMAG,AMASS,GROUP,CHART,NOTES
RV Cen,2461097.243356,10.537,0.002,B,NO,STD,ENSEMBLE,na,83_1,8.712,1.0630,0,260301,TEST Only|CDEC=-56.44629|CMAGINS=-9.486|CRA=204.52111|CREFMAG=10.003|ENSTYPE=1|KDEC=-56.73115|KMAGINS=-10.778|KMAGSTD=8.712|KRA=204.63808|KREFERR=0.049|KREFMAG=8.819|OBSERVAT=BSM_S|PROJNAME=AAVSO_P385_FPIA_AUTO|VMAGINS=-8.953
RV Cen,2461097.244907,7.652,0.002,V,NO,STD,ENSEMBLE,na,83_1,8.189,1.0630,0,260301,TEST Only|CDEC=-56.44629|CMAGINS=-10.253|CRA=204.52111|CREFMAG=9.250|ENSTYPE=1|KDEC=-56.73115|KMAGINS=-11.313|KMAGSTD=8.189|KRA=204.63808|KREFERR=0.032|KREFMAG=8.287|OBSERVAT=BSM_S|PROJNAME=AAVSO_P385_FPIA_AUTO|VMAGINS=-11.851