REGISTER/ROMAFOT

REGISTER/ROMAFOT int_tab reg_tab [wnd_opt] [obj_opt]

This command creates a table with the results of the analysis. However, all the photometric information obtained from the frame as the absolute quantities (magnitudes, colour equations etc.) still have to be derived. In this output table every object occupies one row and the data are stored according the Table 5.2.

 

Table 5.2: Romafot Registration Table

Column	Name	Description
#1	:IDENT	Identification
#2	:X	Physical X-coordinate
#3	:Y	Physical Y-coordinate
#4	:INT	central pixel intensity resulted from the fit
#5	:LOC_BG	Local sky background; see text
#6	:MAG1	Aperture magnitude no.1; see text
#7	:MAG2	Aperture magnitude no.2; see text
#8	:MAG3	Aperture magnitude no.3; see text
#9	:MAG_CNV	Instrumental magnitude; see text
#10	:SIGMA	Sigma of fit function (if not fixed by the user)
#11	:BETA	Parameter of the Moffat fit function
#12	:SIQ	Semi interquartle resulting from the fit
#13	:CHI_SQ	$\chi^{2}$ resulting from the fit

 

The magnitudes MAG1, MAG2 and MAG3 (e.g. U, B and V) are accepted by the commands FIND/ROMAFOT or SELECT/ROMAFOT and are necessary for calibration. In case of program stars (search made with SEARCH/ROMAFOT), these columns are filled with zeros.

The instrumental magnitude MAG_CNV is calculated as $-2.5~ \log~VOL$, where VOL is the integral over the elementary surface to fit the star, calculated from $-\infty$ to $+\infty$. In case of linear data this is expected to differ from the magnitude by a constant.