Photometric calibration of Moroi all-sky cameras: Introduction and first results

Latest advances in charged coupled devices (CCD) allowed the implementation of dense mesh fireball networks. Along with meteor studies, long term analysis of all-sky sequences of calibration captures can provide us with the number of nights we can use for astronomical observations, the number of photometric nights, how the atmospheric extinction changes around the sky or throughout the year. For this study we performed a systematic analysis for two stations of Meteorites Orbits Reconstruction by Optical Imaging (MOROI) network. We implemented a method to characterize the photometric nights, and we established an integral extinction of 0.56 magnitudes/air mass for Feleac, and 0.48 magnitudes/air mass for Berthelot. These yearly coefficients will be used to calibrate the photometry for meteor events.