  This work shows details of an evaluation of an observational system
comprising a CMOS detector, 60-cm telescope, and filter complement. The
system's photometric precision and differential photometric precision, and
extinction coefficients were assessed through observations of Supersky flat
fields, open clusters, standard stars, and exoplanets. Photometry was precision
achieved at the 0.02 mag level, while differential photometry of 0.004 mag
precision. Extinction was found to be agreed with previous studies conducted at
Xinglong Observatory. Ultimately, the results demonstrate this observing system
is capable of precision scientific observations with CCD across the optical
wavelengths.
