Standard stars are taken from the Landolt catalogue (Landolt A.U., AJ 104, 340). Coordinates for some of the standard stars have been improved to account for the 1" pointing accuracy of ANTU.
 

FITS keyword	content
OBJECT	name of standard star
RA	Right ascension (J2000.0) (degrees)
DEC	Declination (J2000.0) (degrees)
Epoch	2000.0
RA_S	RA (HH MM SS)
DEC_S	DEC (DD mm ss)
N	Number of nights observed for standard magnitude
M	Number of measurements for standard magnitude
U, B, V, R, I	Standard magnitudes
B_V, U_B, V_R,R_I, V_I	Standard colours
ERR_V, ERR_B_V, ERR_U_B, ERR_V_R,  ERR_R_I, ERR_V_I	Errors (rms) of V magnitude and colours