Sookjai, D.; Sonkeaw, T.; Panomprai, J.; Pongpraisirikul, S.; Surophan , P.; Thaimai, P.; Rattanasoon, S.; Macatangay, R. Measurement of Atmospheric Extinction Coefficient at Thai National Observatory (TNO). BUU SCI J 2026, 28, 1089-1109.