Transformation equations between the standard and CCD Vilnius systems. IV. Two Mt. Graham CCD systems

Abstract

Abstract. Transformation equations between magnitudes and color indices of the CCD and the standard Vilnius systems are calculated by the synthetic photometry method for two CCD cameras being used on the 1.8 m telescope of the Vatican Observatory on Mt. Graham. The color equations take into account the temperature, luminosity and interstellar reddening effects and make possible transforming the CCD color indices and magnitudes to the standard system with an accuracy of 0.01 mag.