MJD56246-z¶
Form of the Photometric Equation¶
z_std = -2.5log10(counts[ADU]/sec) - a_z - k_z*X - b_z*( (i-z)_std - 0.09) )
where:
z_std is the standard, or calibrated, magnitude of the star
(i-z)_std is the standard, or calibrated, i-z color of the star
a_z is the photometric zeropoint in z
k_z is the first-order extinction in z
b_z is the instrumental color term coefficient in z
X is the airmass
0.09 is a "fiducial" reference color for stars in i-z (based on SDSS experience)
Note that there is a separate photometric zeropoint (a_i) and
instrumental color term coefficient (b_i) for each CCD.
NCSA Processing Results¶
Special Processing Results¶
Attached Files¶