Pengaruh Emisi Cahaya dari Data VIIRS Day/Night Band pada Kecerlangan Langit Malam di Observatorium Ilmu Falak Universitas Muhammadiyah Sumatera Utara (OIF UMSU)
DOI:
https://doi.org/10.17509/wafi.v8i1.42451Keywords:
polusi cahaya, kecerlangan langit malam, Sky Quality Meter, VIIRS Day/Night bandAbstract
Sebagai tempat pengamatan astronomi, Observatorium Ilmu Falak Universitas Muhammadiyah Sumatera Utara (OIF UMSU) membutuhkan kualitas langit malam yang bebas dari polusi cahaya. Atas dasar hal tersebut, penelitian inimelakukan analisa pengaruh polusi cahaya pada kualitas langit astronomis di OIF UMSU (3°34’56’’ LU
dan 98°43’18’’ BT). Pengamatan kualitas langit malam dilakukan oleh OIF UMSU dari Februari 2018-Maret 2020 dengan Sky Quality Meter (SQM) fotometer pada arah zenit. Dari 588 hari pengamatan, Kami memperoleh rata-rata kecerlangan langit malam dan kecerlangan langit malam maksimum adalah 16,73 mpdbp dan 18,43 mpdbp. Nilai tersebut memberikan batas magnitudo pengamatan mata telanjang (NELM) masing-masing sebesar 2,86 dan 4,32. Untuk meninjau kontribusi cahaya artifisial pada kualitas langit malam di OIF UMSU, kami meninjau emisi cahaya malam hari dari pengamatan satelit Suomi National Polar-Orbiting Partnership (SNPP) dengan sensor Visible Infrared Imaging Radiometer Suite (VIIRS) dalam rentang tahun 2018-2020. Emisi cahaya malam hari di Kota Medan menunjukkan peningkatan sebesar 5,51-5,93%/tahun. Hubungan antara kecerlangan langit malam yang menggunakan SQM dan data VIIRS memiliki korelasi lemah dengan R2 = 0,03. Berbagai faktor mempengaruhi lemahnya korelasi tersebut, antara lain nilai kecerlangan langit malam yang dipengaruhi faktor cuaca dan cahaya bulan serta pengamatan kecerlangan langit malam yang hanya berada di satu titik lokasi.
References
Admiranto, A. G., Haida, S. K., Priyatikanto, R., Maryam, S., Ellyyani, & Suryana, N. (2020). Mobile Campaign of Sky Brightness Measurement in Indonesia. Journal of Physics: Conference Series, 1523(1). https://doi.org/10.1088/1742-6596/1523/1/012002
Bará, S. (2014). Naked-eye astronomy: optics of the starry night skies. 12th Education and Training in Optics and Photonics Conference, 9289(July 2013), 92892S. https://doi.org/10.1117/12.2070764
Biggs, J. D., Fouché, T., Bilki, F., & Zadnik, M. G. (2012). Measuring and mapping the night sky brightness of Perth, Western Australia. Monthly Notices of the Royal Astronomical Society, 421(2), 1450–1464. https://doi.org/10.1111/j.1365-2966.2012.20416.x
Cinzano, P. (2005). Night sky photometry with sky quality meter. ISTIL Internal Report, September, 1–14. https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.504.1325&rep=rep1&type=pdf
Duriscoe, D. M., Anderson, S. J., Luginbuhl, C. B., & Baugh, K. E. (2018). A simplified model of all-sky artificial sky glow derived from VIIRS Day/Night band data. Journal of Quantitative Spectroscopy and Radiative Transfer, 214, 133–145. https://doi.org/10.1016/j.jqsrt.2018.04.028
Haida, S. K., Matematika, F., Ilmu, D. A. N., & Alam, P. (2020). BANDUNG TERHADAP KUALITAS LANGIT.
Hänel, A., Posch, T., Ribas, S. J., Aubé, M., Duriscoe, D., Jechow, A., Kollath, Z., Lolkema, D. E., Moore, C., Schmidt, N., Spoelstra, H., Wuchterl, G., & Kyba, C. C. M. (2018). Measuring night sky brightness: methods and challenges. Journal of Quantitative Spectroscopy and Radiative Transfer, 205, 278–290. https://doi.org/10.1016/j.jqsrt.2017.09.008
Herdiwijaya, D. (2019). Light pollution at Bosscha Observatory, Indonesia. Journal of Physics: Conference Series, 1153(1). https://doi.org/10.1088/1742-6596/1153/1/012133
Hölker, F., Wolter, C., Perkin, E. K., & Tockner, K. (2010). Light pollution as a biodiversity threat. Trends in Ecology and Evolution, 25(12), 681–682. https://doi.org/10.1016/j.tree.2010.09.007
Knoll, H. A., Tousey, R., & Hulburt, E. O. (1946). Visual Thresholds of Steady Point Sources of Light in Fields of Brightness from Dark to Daylight. Journal of the Optical Society of America, 36(8), 480. https://doi.org/10.1364/josa.36.000480
Kyba, C. C. M., Tong, K. P., Bennie, J., Birriel, I., Birriel, J. J., Cool, A., Danielsen, A., Davies, T. W., Den Outer, P. N., Edwards, W., Ehlert, R., Falchi, F., Fischer, J., Giacomelli, A., Giubbilini, F., Haaima, M., Hesse, C., Heygster, G., Hölker, F., … Gaston, K. J. (2015). Worldwide variations in artificial skyglow. Scientific Reports, 5, 8409. https://doi.org/10.1038/srep08409
Netzel, H., & Netzel, P. (2016). High resolution map of light pollution over Poland. Journal of Quantitative Spectroscopy and Radiative Transfer, 181, 67–73. https://doi.org/10.1016/j.jqsrt.2016.03.014
Priyatikanto, R., Admiranto, A. G., Putri, G. P., Elyyani, Maryam, S., & Suryana, N. (2019). Map of sky brightness over greater Bandung and the prospect of astro-tourism. Indonesian Journal of Geography, 51(2), 190–198. https://doi.org/10.22146/ijg.43410
Sanchez de Miguel, A., Kyba, C. C. M., Zamorano, J., Gallego, J., & Gaston, K. J. (2020). The nature of the diffuse light near cities detected in nighttime satellite imagery. Scientific Reports, 10(1), 1–16. https://doi.org/10.1038/s41598-020-64673-2
Schnitt, S., Ruhtz, T., Fischer, J., Hölker, F., & Kyba, C. C. M. (2013). Temperature stability of the Sky Quality Meter. Sensors (Switzerland), 13(9), 12166–12174. https://doi.org/10.3390/s130912166
Walker, M. F. (1977). The effects of urban lighting on the brightness of the night sky. Publications of the Astronomical Society of the Pacific, 89(June), 405. https://doi.org/10.1086/130142
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