THE USAGE OF UBVRI FILTERS AND SKY BRIGHTNESS MEASUREMENT (Study on 26 May 2021 Total Lunar Eclipse at ITERA Lampung Astronomical Observatory )

Hendra Agus Prastyo*  -  Institut Teknologi Sumatera, Indonesia
Khabib Suraya    -  Institute for Science and Religion Study, Indonesia
Singgih Prana Putra    -  Yunnan Observatories, Chinese Academy of Sciences (CAS), China
Aditya Abdilah Yusuf  -  Observatorium Astronomi ITERA Lampung (OAIL), Indonesia
Izatul Hafizah  -  Observatorium Astronomi ITERA Lampung (OAIL), Indonesia
Adhitya Oktaviandra  -  Observatorium Astronomi ITERA Lampung (OAIL), Indonesia
Aziz Nugrahamuda Khagahdo  -  Observatorium Astronomi ITERA Lampung (OAIL), Indonesia
M R Kurniawan  -  Observatorium Astronomi ITERA Lampung (OAIL), Indonesia
Gabriella Maharani  -  Observatorium Astronomi ITERA Lampung (OAIL), Indonesia
Ababil Silahuddin  -  Observatorium Astronomi ITERA Lampung (OAIL), Indonesia

(*) Corresponding Author

On May 26, 2021, the ITERA Lampung Astronomical Observatory (OAIL) got the opportunity to watch the Total Lunar Eclipse (TLE). The observations had two goals: determining the most efficient filter for observing the Penumbral Lunar Eclipse (PLE) and determining the influence of TLE phenomena on sky brightness. The acquired picture data is analyzed using the photometric approach. Six sample points are utilized to calculate the magnitude of the PLE. According to the findings, the blue filter is the generally ideal filter for detecting PLE. Tycho crater had the greatest magnitude of -18.1 while mare Imbrium had the highest magnitude of -17.2. When determining the intensity of the crater and mare, this value is impacted by various parameters, including the duration of the integration period and the aperture radius. As a result, this number still has to be adjusted to the full moon's intensity. The results of SQM measurements of the sky's brightness form a light curve pattern that declines during the umbra phase and continues to diminish until the Moon departs the Earth's penumbra. This shows that the value of sky brightness increases or the sky becomes significantly darker during the total phase, while the Moon's skyglow diminishes during TLE.

Keywords: Total Lunar Eclipse (TLE), UBVRI Filter, Sky Quality Meter (SQM)

  1. Admiranto, Agustinus Gunawan. “Eksplorasi Tata Surya.” Bandung: Mizan Pustaka, 2017.
  2. Ahyar, Mustofa, Yudhiakto Pramudya, and Okimustava Okimustava. “Implementasi Sistem Pengolahan Data Sky Quality Meter Berbasis Visual Basic Untuk Analisis Perubahan Tingkat Kecerahan Langit.” Jurnal Kumparan Fisika Vol. 3, no. 3 (2020): 239–46.
  3. Anugraha, Rinto. “Mekanika Benda Langit.” Yogyakarta: MIPA UGM, 2012.
  4. Azmi, Muhammad Farid. “Prediksi Pergerakan Bayangan Bumi Saat Terjadi Gerhana Bulan Menggunakan Ephemeris Hisab Rukyat.” Al-Marshad: Jurnal Astronomi Islam Dan Ilmu-Ilmu Berkaitan Vol. 4, no. 2 (2018).
  5. Azzahidi, F, M Irfan, and J. A. Utama. “Pengukuran Kecerahan Langit (Sky Brightness) Observatorium Bosscha Menggunakan Teleskop Portabel Dan CCD.” Prosidings Seminar Himpunan Astronomi Indonesia, 2011.
  6. “Baader UBVRI Photometrics Filter Set,” 2021. https://eu.lunaticoastro.com/product/baader-ubvri-photometrics-filter/.
  7. Baiddiun, Ruslin Zainal, Yudhiakto Pramudya, and Okimustava Okimustava. “Studi Perbandingan Tingkat Kecerahan Langit Dengan Menggunakan Kamera Smartphone Dan Sky Quality Meter Berbantuan Tracker.” JIIF (Jurnal Ilmu Dan Inovasi Fisika) Vol. 5, no. 1 (2021): 65–73.
  8. Budding, E, and O Demircan. “Introduction to Astronomical Photometry 2nd Edition.” Canakkale University Turkey, 2007.
  9. Cinzano, P. “Mem. Soc. Astron. It” v. 1.2 (2000).
  10. ———. “Night Sky Photometry with Sky Quality Meter.” ISTIL Internal Report 1 (2005).
  11. Faid, M S, Nurulhazwani Husien, N N M Shariff, M O Ali, Z S Hamidi, N H Zainol, and S N U Sabri. “Monitoring the Level of Light Pollution and Its Impact on Astronomical Bodies Naked-Eye Visibility Range in Selected Areas in Malaysia Using the Sky Quality Meter.” In 2016 International Conference on Industrial Engineering, Management Science and Application (ICIMSA), 1–6. IEEE, 2016.
  12. Ismail. “Lhokseumawe Society Rituals at the Solar Eclipse.” AL-Hilal: Journal of Islamic Astronomy Vol. 2, no. 1 (2019).
  13. Kerrod, Robbin. “Bengkel Ilmu Astronomi, Terj.” Syamaun Peusangan, Jakarta: Penerbit Erlangga, 2005.
  14. Lampung, Unit Pelaksana Teknis Observatorium Astronomi ITERA. “Lunt Engineering 80 ED f/7,” 2022. https://oail.itera.ac.id/fasilitas/teleskop-portabel/lunt-80mm/.
  15. NASA. “Eclipse: Who? What? Where? When? And How?,” 2017. https://eclipse2017.nasa.gov/eclipse-who-what-where-when-and-how.
  16. ———. “Partial Lunar Eclipse of 2021 Nov 19,” 2021. https://eclipse.gsfc.nasa.gov/LEplot/LEplot2001/LE2021Nov19P.pdf.
  17. ———. “Total Lunar Eclipse of 2021 May 26,” 2021. https://eclipse.gsfc.nasa.gov/LEplot/LEplot2001/LE2021May26T.pdf.
  18. Nugraha, Muhamad Gina, Raden Giovanni Ariantara, Annisa Nurjanah, Harbi Setyo Nugroho, Judhistira Aria, Duden Saepuzaman Utama, Hana Susanti, Fitri Nurul, Anggi Hanif Setyadin Sholihat, and Kartika Hajar Kirana. “Anomalies of Earth Surface Gravity Field (g) during Total Lunar Eclipse (TLE) on January 31 and July 28 2018 Using Video Tracker Analysis on Pendulum Harmonic Motion.” Journal of Engineering Science and Technology 15, no. 02 (2020): 1001.
  19. Raisal, Abu Yazid, Muhammad Hidayat, Leo Hermawan, and Arwin Juli Rakhmadi. “The Effect of the Installation Angle of the Sky Quality Meter on the Night Sky Brightness and the Beginning of the Fajr Prayer Time.” Indonesian Review of Physics Vol. 3, no. 2 (2020): 35–39.
  20. Raisal, Abu Yazid, and Yudhiakto Pramudya. “Pemanfaatan Metode Moving Average Dalam Menentukan Awal Waktu Salat Subuh Menggunakan Sky Quality Meter (SQM).” Al-Marshad: Jurnal Astronomi Islam Dan Ilmu-Ilmu Berkaitan Vol. 5, no. 1 (2019).
  21. Raisal, Abu Yazid, Hariyadi Putraga, Muhammad Hidayat, and Arwin Juli Rakhmadi. “Pengukuran Kecerahan Langit Arah Zenit Di Medan Dan Serdang Bedagai Menggunakan Sky Quality Meter.” JIPFRI (Jurnal Inovasi Pendidikan Fisika Dan Riset Ilmiah) Vol. 5, no. 1 (2021): 51–58.
  22. Riswanto, and Nyoto Suseno. Dasar-Dasar Astronomi Dan Fisika Kebumian. Lampung: Lembaga Penelitian UM Metro Press, 2015.
  23. Romanishin, W. “Introduction to Astronomical Photometry Using CCDs.” University of Oklahoma, 2002.
  24. “Sky Quality Meter - LU,” 2022. http://unihedron.com/projects/sqm-lu/.
  25. Suprapto, N, and V K Yanti. “The Understanding of Undergraduate Physics Students Regarding the Super Blood Moon Total Lunar Eclipse Phenomenon May 26, 2021.” In Journal of Physics: Conference Series, Vol. 2049:12004. IOP Publishing, 2021.
  26. “ZWO Cmos Camera Expert,” 2022. https://astronomy-imaging-camera.com/product/asi178mm-mono.

Al-Hilal: Journal of Islamic Astronomy
Published by Faculty of Sharia and Law Universitas Islam Negeri Walisongo Semarang in collaboration with Asosiasi Dosen Falak Indonesia (ADFI)
Jl Prof. Dr. Hamka Kampus III Ngaliyan Semarang 50185
Phone: (024) 7601291
Website: https://fsh.walisongo.ac.id/
Email: alhilal@walisongo.ac.id

 
apps