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Poster Title: Light Pollution Observations in Indonesia

Author(s): Agustinus Gunawan Admiranto1, Rhorom Priyatikanto1, Siti Maryam1, Elyyani1, Clara Y. Yatini1, E. Sungging Mumpuni1, M. Ferdiansyah Noor1, Mulya Diana Murti2, Muhamad Bayu Saputra2, Dio Danarianto2, Bambang Suhandi2, Jehudias Leonidas Tanesib3, Arum Kusumaningtyas4

1Space Research Science Center, LAPAN-BRIN, Bandung, Indonesia - 2Timau National Observatory Facility, Kupang, Indonesia - 3Cendana University, Kupang, Indonesia - 4Arunika Cipta Persada Research Center, Yogyakarta, Indonesia

Contact: gunawan.admiranto@lapan.go.id

Abstract: Light pollution is a growing concern in the world. It affects many walk of lives, including human health, the degradation of nocturnal animal habitat, and the inability of the astronomers to observe dimmer objects. Maintaining a view of our dark skies has implications beyond the inspirational connection to the universe, it is also vital to the health and safety of humans and wildlife as well as our respective ecosystems, which often overlap. Species may migrate during the nighttime hours to avoid daytime predators, maximize foraging time during the day, navigate using the moon or constellations, or to prevent bodies from overheating due to hours of wing flapping. These species now have to navigate new challenge in nighttime migration caused by the constant blaring light emitted from human settlements. Which in a longer term will caused negativity to the our ecosystem and biodiversity, mostly related to food chain and agricultural sector for human race. We in Space Science Center of LAPAN (Indonesian National Institute of Aeronautics and Space) try to mitigate this through a coordinated observation of light pollution using Sky Quality Meter equipments which are located in several LAPAN’s stations [Agam (West Sumatra), Pontianak (West Kalimantan), Sumedang (West Java), Garut (West Java), Pasuruan (East Java), Kupang (East Nusa Tenggara), and Biak (Papua)]. The observations has been conducted since 2018 in stationary and moving modes, and the results are then sent to a central database which is located in Space Science Center in Bandung (West Java). The results showed that there are some variations of light pollution across Indonesia. In this respect most of the stations have moderate pollution as can be seen from the values of Biak, Agam, Sumedang, and Pontianak (20.0, 19.5, 19.6, and 17.7 mpsas respectively). On the other hand, the stations which are located near or in cities have high light pollution (Bandung and Pasuruan with 17.1 and 18.0 mpsas, respectively). A particular station (Garut) has low light pollution (20.6 mpsas). In Kupang we build a National Observatory which is surrounded by a (planned) dark sky park so the observatory can operate as long as possible. Keywords: light pollution, coordinated observations, Sky Quality Meter, moving and stationary observations, National Observatory, dark sky park


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