Zenithal Sky Brightness Measurement at Selangor Observatory

• Published in: Journal of Physics: Conference Series
• Main Author: Ngadiman N.F.; Shariff N.N.M.; Hamidi Z.S.
• Format: Conference paper
• Language: English
• Published: IOP Publishing Ltd 2021
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85102452751&doi=10.1088%2f1742-6596%2f1768%2f1%2f012015&partnerID=40&md5=cd58618e12d4c28f1f2f0da160e4bde1

The first continuous assessment of night sky brightness (NSB) at Selangor Observatory are presented. The brightness at night sky was monitored over 6 months in 2018, using portable light sensor called the Sky Quality Meter-type USB-Data Logging with a fixed position-pointing towards zenith. From the 179 records of night, the study shows that the average NSB readings at Selangor Observatory is 20.04 0.18 magnitude per square arc second (MPSAS), after excluding the moonlight factor. Meanwhile, during the stable night sky conditions, the most recorded NSB value is 21.1 MPSAS with 0.78 MPSAS range and 21.03 MPSAS in average. Therefore, Selangor Observatory is still a relevant location for the implementation of astronomical work since it has a night sky within Bortle scale Class 4 to 5. © 2021 Published under licence by IOP Publishing Ltd.