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All Journal Astroislamica: Journal of Islamic Astronomy Jurnal Ilmu dan Inovasi Fisika
Muhammad Dimas Firdaus
Observatorium Ilmu Falak Universitas Muhammadiyah Sumatera Utara
Religion Astronomy Computer Science & IT Electrical & Electronics Engineering Energy Environmental Science Materials Science & Nanotechnology

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Penentuan Awal Waktu Subuh Menggunakan Kamera DSLR dan Metode Moving Average Hariyadi Putraga; Arwin Juli Rakhmadi; Muhammad Dimas Firdaus; Muhammad Hidayat
JIIF (Jurnal Ilmu dan Inovasi Fisika) Vol 6, No 2 (2022)
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (505.402 KB) | DOI: 10.24198/jiif.v6i2.38995

Abstract

Keberadaan Teknologi terutama optik dan digital yang dapat digunakan dengan pengaturan serupa dimanapun agar dapat dilaksanakan siapa saja dapat menjadi standar baru untuk penentuan dan tampilan visual awal waktu subuh yang terlihat di lapangan. Kamera Digital yang dapat diambil dengan berkala sehingga dapat menghasilkan deretan gambar sesuai waktu dan menujukan perbedaan langit  saat transisi waktu subuh menjadi salah satu pilihan dan alat pembuktian awal waktu subuh di dunia.Hasil dari penelitian ini menunjukkan terdapat perbedaan awal waktu subuh menurut Kemenag dengan hasil olahan citra menggunakan metode moving average. Hasil olahan citra tersebut berhasil menunjukkan awal perubahan langit pada waktu subuh dengan terlihatnya perubahan nilai pixel yang signifikan. Dari penelitian ini ditemukan hasil awal waktu subuh pada tanggal pengamatan berada pada saat matahari pada dip -17° 07' 12".
Pengamatan Hilal Siang Hari di OIF Cabang Barus Muhammad Dimas Firdaus; Hariyadi Putraga; Muhammad Hidayat; Arwin Juli Rakhmadi
Astroislamica: Journal of Islamic Astronomy Vol. 1 No. 2 (2022): Astroislamica: Journal of Islamic Astronomy (Desember)
Publisher : Islamic Astronomy Department, Sharia and Law Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (699.937 KB) | DOI: 10.47766/astroislamica.v1i2.965

Abstract

Crescent observation as one of the practices carried out within the scope of falak science has an escalation in methods to adapt the development of science and technology. The development of crescent observation method has an impact on the observation time. In the past, observing crescent only focused when the sun had set, but now observing crescent can be done since the sun is still above the horizon. OIF UMSU as an institution engaged in the field of falak science also conducts crescent observations every month from noon. On November 25, 2022, OIF Barus Team managed to capture the new moon crescent at noon at 13:49 WIB with an elongation of 18°25'. This observation could maximizing existing instruments to obtain crescent images with smaller elongation.
Perbandingan Medan Pandang Teleskop dalam Pengamatan Konjungsi Bulan – Jupiter dari Kota Medan, Barus, dan Lhokseumawe Hariyadi Putraga; Muhammad Dimas Firdaus; Marataon Ritonga; Arwin Juli Rakhmadi; Ruslandi Ruslandi; Ismail Ismail
Astroislamica: Journal of Islamic Astronomy Vol. 3 No. 1 (2024): Astroislamica: Journal of Islamic Astronomy (Juni)
Publisher : Islamic Astronomy Department, Sharia and Law Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47766/astroislamica.v3i1.2816

Abstract

Astronomical phenomenon occur for only a limited amount of time. Observing these phenomenon requires competent promoters and appropriate instruments. The field of view is one of the things that needs to be clearly known so that the observation can take place properly. In this study, joint observations were made between IAIN Lhokseumawe Falak Science Study Programme and OIF UMSU in Medan and Barus. The instruments used in these observations are different, resulting in a variety of fields of view and calculations are needed to get a description of the results. This study aims to calculate the field of view and visibility of the observed phenomenon, the conjunction of the Moon - Jupiter. The results obtained are for the instrument used by IAIN Lhokseumawe Falak Science Study Program at Malikussaleh Observatory has a field of view of 2°7'46.13‘ × 1°25'22.25’, the instrument used by UMSU Medan Falak Science Observatory has a field of view of 1°8'26.96‘ × 0°54'45.57’, and the instrument used by the OIF UMSU Barus team has a field of view of 1°0'43.74’ × 0°41'1.98. Using this combination of instruments cannot observe the conjunction phenomenon, because the elongation of the Moon - Jupiter at the time of the observation is >4°, so to be able to get the visibility of the phenomenon in 1 image requires an instrument that produces a field of view of ~5°.
Co-Authors Arwin Juli Rakhmadi Hariyadi Putraga Hidayat, Muhammad Ismail Ismail Marataon Ritonga Ruslandi Ruslandi