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All Journal Ulul Albab: Jurnal Studi dan Penelitian Hukum Islam Jurnal Riset dan Kajian Pendidikan Fisika Jurnal Pendidikan Fisika Al-Ahkam: Jurnal Ilmu Syari'ah dan Hukum JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Titian Ilmu: Jurnal Ilmiah Multi Sciences SPEKTRA: Jurnal Kajian Pendidikan Sains Jurnal Environmental Science Al-MARSHAD: Jurnal Astronomi Islam dan Ilmu-Ilmu Berkaitan Pendas : Jurnah Ilmiah Pendidikan Dasar JPF : JURNAL PENDIDIKAN FISIKA Jurnal Kumparan Fisika Indonesian Review of Physics (IRiP) Ihsan: Jurnal Pengabdian Masyarakat Navigation Physics : Journal of Physics Education Ekonomi Bisnis Manajemen dan Akuntansi (EBMA) Proceeding International Seminar of Islamic Studies Al-Afaq: Jurnal Ilmu Falak dan Astronomi Cakrawala: Jurnal Pengabdian Masyarakat Global Jurnal Pengabdian Masyarakat Indonesia Sejahtera Cendikia Pendidikan Azkayra: Jurnal Pengabdian Masyarakat dan Sosial Bumi: Jurnal Hasil Kegiatan Sosialisasi Pengabdian Kepada Masyarakat Al-Ahkam: Jurnal Ilmu Syari'ah dan Hukum Jurnal Cakrawala Akademika
Abu Yazid Raisal
Universitas Muhammadiyah Sumatera Utara
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Pengukuran Kecerahan Langit Arah Zenit di Medan dan Serdang Bedagai Menggunakan Sky Quality Meter Abu Yazid Raisal; Hariyadi Putraga; Muhammad Hidayat; Arwin Juli Rakhmadi
JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Vol 5 No 1 (2021): May Edition
Publisher : Program Studi Pendidikan Fisika STKIP Nurul Huda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30599/jipfri.v5i1.835

Abstract

Light pollution is a worldwide problem that affects fewer stars that can be seen at night. This study aims to measure the brightness of the sky in the zenith direction to minimize the effect of light pollution in observing celestial bodies. The research used the observation method of sky brightness level with SQM. Measurement of sky brightness was carried out in two places, namely in Medan and Serdang Bedagai. The SQM is mounted in a zenith direction and set to retrieve data every two seconds. Observations were made on November 10-13, 2018, during the new moon phase. The average value of sky brightness obtained in Medan is 18.05 mpsas and the NELM value is 4.00. Based on the Bortle scale, Medan is included in the ninth class area, namely the inner-city sky. Meanwhile, the average value of sky brightness obtained in Serdang Bedagai is 19.69 mpsas and the NELM value is 5.26. Based on the Bortle scale, Serdang Bedagai belongs to the sixth class area, namely bright suburban sky.
Understanding the effect of revolution and rotation of the earth on prayer times using accurate times Abu Yazid Raisal; Arwin Juli Rakhmadi
Ulul Albab: Jurnal Studi dan Penelitian Hukum Islam Vol 4, No 1 (2020): Vol. 4, No. 1, Oktober 2020
Publisher : Sultang Agung Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/jua.v4i1.10936

Abstract

Prayer time is closely related to the position of the Sun toward the Earth. The position of the Sun against the Earth is affected by the revolution and rotation of the Earth. Three cities were chosen to see the effect of revolution and rotation of the Earth on prayer times in the hemisphere, namely Stockholm city representing the northern hemisphere, Wellington city representing the southern hemisphere, and Pontianak city representing the equatorial region. Prayer times are calculated using the Accurate Times software during the equinox, summer solstice, and winter solstice in 2020. Locations in high latitudes will experience large differences in prayer times throughout the year due to differences in day and night lengths. Accurate Times software can show the prayer times difference in the hemisphere. Areas that sometimes experience day for 24 hours or night for 24 hours are difficult in determining prayer times. There are two options to overcome this problem, namely adjusting to neighboring countries where night and day can be distinguished or following prayer times in Mecca and Medina. 
Posisi matahari pada saat ekuinoks, summer solstice, dan winter solstice di observatorium ilmu falak Universitas Muhammadiyah Sumatera Utara Abu Yazid Raisal; Hariyadi Putraga; Muhammad Hidayat; Rizkiyan Hadi
Jurnal Riset dan Kajian Pendidikan Fisika Vol 7, No 1 (2020): April 2020
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (351.255 KB) | DOI: 10.12928/jrkpf.v7i1.15772

Abstract

Abstrak. Selama satu tahun, Matahari tidak selalu berada di daerah khatulistiwa, namun terkadang berada di daerah utara khatulistiwa serta daerah selatan khatulistiwa. Kedudukan Matahari di khatulistiwa disebut ekuinoks, kedudukan Matahari saat berada di titik terjauh di utara dari khatulistiwa disebut solstis musim panas (summer solstice), kedudukan Matahari saat berada di titik terjauh di selatan dari khatulistiwa disebut solstis musim dingin (winter solstice). Matahari di Observatorium Ilmu Falak Universitas Muhammadiyah Sumatera Utara menunjukkan posisi yang berbeda saat ekuinoks, summer soltice, dan winter solstice. Matahari terbit di arah timur dan terbenam di arah barat hanya terjadi pada saat ekuinoks. Meskipun saat ekuinoks, namun Matahari tidak dapat menunjukk arah timur dan barat sepanjang hari. Hal ini disebabkan pergerakan Matahari tidak tegak lurus terhadap horizon melainkan miring sesuai dengan lintang tempat.Kata kunci: summer sosltice, winter sosltice, ekuinoksAbstract. During one year, the Sun is not always in the equator, but sometimes it is in the north of the equator and the south of the equator. The position of the Sun at the equator is called the equinox, the position of the Sun when it is at its farthest point north of the equator is called the summer solstice, the position of the Sun when it is at the farthest point south of the equator is called the winter solstice. The Sun at Obervatorium Ilmu Falak Universitas Muhammadiyah Sumatera Utara shows a different position during the equinox, summer solstice, and winter solstice. The sun rises in the east and sets in the west only at the equinox. Even at the equinox, the Sun can't show east and west all day. This is due to the movement of the Sun not perpendicular to the horizon but tilted in accordance with the latitude of the place.Keywords: summer sosltice, winter sosltice, equinox
Pengukuran Tingkat Polusi Cahaya dan Awal Waktu Subuh di OIF UMSU dengan Menggunakan Sky Quality Meter Arwin Juli Rakhmadi; Hasrian Rudi Setiawan; Abu Yazid Raisal
Titian Ilmu: Jurnal Ilmiah Multi Sciences Vol 12 No 2 (2020): Titian Ilmu: Jurnal Ilmiah Multi Sciences - July 2020
Publisher : Universitas Nurul Huda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30599/jti.v12i2.667

Abstract

Polusi cahaya merupakan masalah utama bagi kegiatan observasi di observatorium. Karena itu Observatorium Ilmu Falak Universitas Muhammadiyah Sumatera Utara (OIF UMSU) perlu mengukur tingkat polusi cahaya demi kelancaran observasi. Polusi cahaya dapat diketahui dengan cara mengukur tingkat kecerahan langit malam menggunakan Sky Quality Meter (SQM). Penelitian ini dilakukan dengan metode observasi. SQM dipasang pada tiga arah yaitu zenit, 45o timur dan ufuk timur. Nilai kecerahan langit untuk SQM yang diarahkan ke ufuk timur memiliki nilai paling rendah dibandingkan dengan arah yang lain dikarenakan polusi cahaya yang tinggi di langit ufuk timur. Hasil penelitian menunjukkan nilai kecerahan langit dari SQM yang diarahkan ke zenit, 45o timur dan ufuk timur menunjukkan nilai rata-rata 17,01 mpsas, 16,57 mpsas, dan 15,81 mpsas. Berdasarkan hasil penelitian dapat disimpulkan bahwa polusi cahaya di OIF UMSU sudah dominan. Awal waktu Subuh terjadi pada saat fajar nautikal dilihat dari ketinggian Matahari yang diperoleh oleh SQM yang diarahkan ke zenit, 45o timur dan ufuk timur memiliki nilai rata-rata 9,78o, 11,06o dan 11,07o di bawah horizon.
PENGAMATAN HILAL SIANG MENGGUNAKAN METODE OLAHAN FILTER WARNA PADA SOFTWARE IRIS Hariyadi Putraga; Abu Yazid Raisal; Muhammad Hidayat; Arwin Juli Rakhmadi
JURNAL SPEKTRA Vol 7, No 1 (2021): SPEKTRA: Jurnal Kajian Pendidikan Sains
Publisher : Program Studi Pendidikan Fisika, FITK, UNSIQ

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32699/spektra.v7i1.187

Abstract

Keberadaan perangkat lunak yang dapat melakukan pengolahan citra hasil pengamatan menjadi salah satu instrumen yang dapat membantu pengamat untuk melakukan pencarian keberadaan hilal siang hari di dalam citra gambar yang diambil oleh alat penangkap citra atau kamera. Salah satu instrument perangkat lunak yang dapat digunakan untuk pengolahan citra benda langit adalah software IRIS Astronomy yang berasal dari Astrosurf. Keberadaan perangkat lunak ini membantu pengamat dalam mengolah, mendapatkan citra gambar dan memperjelas dari keadaan benda langit yang terdapat pada citra yang didapat dan diolah tersebut. Dengan keberadaan fitur – fitur yang dapat digunakan untuk mengganti tampilan gambar ke dalam tampilan temperature, ultraviolet dan inverted color, maka dapat mempermudah pengamat dalam menentukan kemungkinan keberadaan hilal pada gambar yang diolah. Pada penelitian ini dilakukan percobaan pengamatan hilal atau bulan sabit pada siang hari (matahari masih diatas ufuk) menggunakan teleskop dengan bantuan software pengolah citra. Kegiatan ini dilakukan dengan mengambil gambar dengan kamera. Kemudian. dilanjutkan dengan mengolah gambar menggunakan IRIS. Hal ini dilakukan untuk melihat kemungkinan keberadaan dan keterlihatan hilal di siang hari tersebut. 
PENGEMBANGAN MEDIA AJAR LUBANG HITAM MENGGUNAKAN MODEL PENGEMBANGAN ADDIE Hasrian Rudi Setiawan; Arwin Juli Rakhmadi; Abu Yazid Raisal
Jurnal Kumparan Fisika Vol 4, No 2: Agustus 2021
Publisher : Unib Press, Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/jkf.4.2.112-119

Abstract

Salah satu faktor yang dapat menyebabkan kesulitan dalam proses pembelajaran adalah pendidik tidak menggunakan alat peraga.  Lubang hitam merupakan suatu daerah dalam ruang-waktu dengan medan gravitasi begitu kuat bahkan cahaya tidak dapat lolos. Hal ini mengakibatkan lubang hitam tidak dapat diamati secara langsung. Penelitian ini bertujuan untuk mengembangkan sebuah media ajar tentang lubang hitam di Observatorium Ilmu Falak Universitas Muhammadiyah Sumatera Utara (OIF UMSU). Jenis penelitian ini adalah Research and Development (penelitian dan pengembangan). Model pengembangan yang digunakan adalah model pengembangan ADDIE (Analysis, Design, Development, Implemetation, dan Evaluation). Penelitian ini dibatasi hanya sampai tahap Development. Berdasarkan penilaian dari dua validator untuk media, rata-rata nilai yang diperoleh adalah 76,88%. Dari segi media, media ajar lubang hitam ini masuk kategori cukup layak untuk dikembangkan. Berdasarkan penilaian dari dua validator untuk materi, rata-rata nilai yang diperoleh adalah 80,36%. Dari segi media, media ajar lubang hitam ini masuk kategori layak untuk dikembangkan. Rata-rata validasi dari ahli media dan ahli materi adalah 78,62% dengan kategori cukup layak.
Perbandingan Perhitungan Waktu Shalat Menggunakan Astrolabe RHI dan Accurate Times Hasrian Rudi Setiawan; Arwin Juli Rakhmadi; Muhammad Hidayat; Abu Yazid Raisal; Hariyadi Putraga
Al-Ahkam Jurnal Ilmu Syari’ah dan Hukum Vol. 6 No. 2 (2021): Al-Ahkam: Jurnal Ilmu Syari'ah dan Hukum
Publisher : IAIN Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22515/alahkam.v6i2.3416

Abstract

This study aims to determine the comparison of the calculation of prayer times using the RHI Astrolabe and Accurate Times Software. In addition, this study also describes in detail the steps in determining prayer times using the RHI Astrolabe and Accurate Times Software. The research method used in this study is experimental. The results of this study indicate that there is a difference in the calculation of prayer times on December 20 between the RHI Astrolabe and Accurate Times Software. The difference between Asr is 8 minutes, Isha 6 minutes and Fajr 1 minute. Meanwhile, during Zuhr, Maghrib and Shuruq there is no difference in the calculation of the RHI Astrolabe with the Accurate Times Software.   Penelitian ini bertujuan untuk mengetahui perbandingan perhitungan waktu shalat menggunakan Astrolabe RHI dan Software Accurate Times. Tujuan penelitian lainnya adalah untuk menjelaskan secara rinci langkah-langkah dalam menentukan waktu shalat menggunakan Astrolabe RHI dan Software Accurate Times. Adapun metode penelitian yang digunakan dalam penelitian ini yaitu eksperimen. Hasil penelitian ini menunjukkan bahwa terdapat selisih perbedaan perhitungan waktu shalat pada tanggal 20 Desember antara Astrolabe RHI dengan Software Accurate Times. Adapun selisih pada waktu Ashar 8 menit, Isya 6 menit dan Subuh 1 menit. Sedangkan waktu Zuhur, Maghrib dan Syuruq tidak ada perbedaan pada perhitungan menggunakan Astrolabe RHI dan Software Accurate Times.
THE FALAK SCIENCE OBSERVATORY OF UNIVERSITY OF MUHAMMADIYAH NORTH SUMATRA (OIF UMSU) AND THE CONTRIBUTION IN FAJR TIME RESEARCH Arwin Juli Rakhmadi; Abu Yazid Raisal; Muhammad Hidayat; Hariyadi Putraga; Isra Hayati
Proceeding International Seminar of Islamic Studies INSIS 2 (January 2021)
Publisher : Proceeding International Seminar of Islamic Studies

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (783.997 KB)

Abstract

The Falak Science Observatory of the University of Muhammadiyah North Sumatra (abbreviated OIF UMSU) is an observatory that is engaged in the study and research of Islamic Astronomy. Structurally, this institution is under the auspices of the University of Muhammadiyah North Sumatra (UMSU). One focus of The Falak Science Observatory of the University of Muhammadiyah North Sumatra is the fajr time (true dawn) research by using Sky Quality Meter (SQM) instruments. OIF UMSU's Fajr time research data has compiled up to hundred data (days), collected from 2017 to 2020. Besides, some of OIF UMSUs data also been utilized by various parties in the research and development of the dawn study and Falak science in general. This article will present at a glance about OIF UMSU and the contribution to Fajr Time research using Sky Quality Meter.
Measuring the Apparent Magnitude of Planet Mars on August 1st and October 2nd, 2018 at the Falak Observatory at Muhammadiyah University of North Sumatera Muhammad Hidayat; Arwin Juli Rakhmadi; Abu Yazid Raisal
Indonesian Review of Physics (IRiP) Vol. 3 No. 1 (2020)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v3i1.1838

Abstract

The Bright stars that were seen by the eyes are the received quantity of the energy flux sent from the celestial body. The energy flux is inversely proportional to the distant quadrant which means that the light of the stars that are visible to our eyes cannot be compared to the actual brightness or even weaker than the others and the visible star lights the apparent magnitude. The purpose of this study is to measure the apparent magnitude of Mars. This research methodology is quantitative, by taking number of images/videos of Mars and then the data is processed by using IRIS software. The results of the analysis is using IRIS software that shows the value of the apparent magnitude of Mars on August 1st, 2018 is (-1.56 ± 0.33) and October 2nd 2018 is (-1.84 ± 0.08). This was taken by selecting the best image result in clear night sky.
The Effect of the Installation Angle of the Sky Quality Meter on the Night Sky Brightness and the Beginning of the Fajr Prayer Time Abu Yazid Raisal; Muhammad Hidayat; Leo Hermawan; Arwin Juli Rakhmadi
Indonesian Review of Physics (IRiP) Vol. 3 No. 2 (2020)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v3i2.2074

Abstract

Measuring the brightness of the night sky and determining the start of Fajr prayer times can be done using SQM. Observations were made at OIF UMSU with coordinates 3o 34' 55.06" N and 98o 43' 17.09" E. The sky brightness was measured using three SQMs mounted facing the zenith, eastern horizon, and western horizon. The night sky brightness values for SQM directed to the zenith, eastern horizon, and western horizon are 18.23 mpsas, 15.82 mpsas, and 15.47 mpsas. The beginning of fajr prayer time produced by SQM is after the beginning of fajr prayer time obtained using the Accurate Times concerning the Sun's altitude 18o below the horizon. The difference obtained by SQM directed to the zenith, eastern horizon, and western horizon is 29.5 minutes, 36.7 minutes, and 39.5 minutes. In other words, the beginning of Fajr prayer time used in Indonesia is earlier than it should be.
Co-Authors Ananda, Fadilla Sayu Anggraini, Maya Dita Ariswan Ariswan Arwin Juli Rakhmadi Aryunita, Srika Diyah Anggraini Edy Ervianto Fadilla Sayu Ananda Firdaus, Muhammad Dimas Hadi Ismail, Abdul Hariyadi Putraga Hasibuan, Alya Fathi Muhammad Hasrian Rudi Setiawan Hassan, Rohana Heru Kuswanto Hidayat, Muhammad Hizami Sabil Ida Hanifah Isra Hayati Jen Agus Perry Hasibuan Jf, Nurul Zahriani Khair, Alfath Leo Hermawan Marataon Ritonga Mega Sukma Muhammad Hidayat Nilfa Zalukhu Noveri Lysbetti M Nurhalim Nurhalim, Nurhalim Rahyul Amri Rihan Yuhyi Rizkiyan Hadi Rosynanda Nur Fauziah Rosynanda Nur Fauziah Sakti Hutabarat Siagian , Ruben Cornelius Taufiq Iradah Telaumbanua Vira Aurel Yuhyi, Rihan