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All Journal Ulul Albab: Jurnal Studi dan Penelitian Hukum Islam Afkaruna: Indonesian Interdisciplinary Journal of Islamic Studies Intiqad: Jurnal Agama dan Pendidikan Islam YUDISIA : Jurnal Pemikiran Hukum dan Hukum Islam Heritage of Nusantara: International Journal of Religious Literature and Heritage KARSA: Jurnal Sosial dan Budaya Keislaman (Journal of Social and Islamic Culture) MIQOT: Jurnal Ilmu-ilmu Keislaman Al-Ahkam: Jurnal Ilmu Syari'ah dan Hukum MAHKAMAH: Jurnal Kajian Hukum Islam JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Titian Ilmu: Jurnal Ilmiah Multi Sciences SPEKTRA: Jurnal Kajian Pendidikan Sains Jurnal Environmental Science MUST: Journal of Mathematics Education, Science and Technology Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) Jurnal Pendidikan Islam Jurnal SOLMA Al-MARSHAD: Jurnal Astronomi Islam dan Ilmu-Ilmu Berkaitan ORBITA: Jurnal Pendidikan dan Ilmu Fisika Jurnal Dinamika Sosial Budaya Journal of Contemporary Islam and Muslim Societies Idrak: Journal of Islamic Education Al-Hikmah: Jurnal Agama dan Ilmu Pengetahuan IJISH (International Journal of Islamic Studies and Humanities) Jurnal Kumparan Fisika Journal of Islam and Science Indonesian Review of Physics (IRiP) Ihsan: Jurnal Pengabdian Masyarakat Jurnal Ilmu Pemerintahan, Administrasi Publik, dan Ilmu Komunikasi (JIPIKOM) ELFALAKY: Jurnal Ilmu Falak Maslahah: Jurnal Pengabdian Masyarakat Al-Fikru: Jurnal Ilmiah International Journal of Community Service Proceeding International Seminar of Islamic Studies Al-Hilal: Journal of Islamic Astronomy Al-Afaq: Jurnal Ilmu Falak dan Astronomi Tsaqila Jurnal Pendidikan dan Teknologi Edu Society: Jurnal Pendidikan, Ilmu Sosial dan Pengabdian Kepada Masyarakat Jumantara: Jurnal Manuskrip Nusantara INJURITY: Journal of Interdisciplinary Studies DIKTUM: JURNAL SYARIAH DAN HUKUM Astroislamica: Journal of Islamic Astronomy QANUN: Journal of Islamic Laws and Studies Heritage of Nusantara: International Journal of Religious Literature and Heritage Jurnal Ilmu dan Inovasi Fisika Jurnal Pendidikan Islam Wahana Fisika : Jurnal Fisika dan Terapannya Azkayra: Jurnal Pengabdian Masyarakat dan Sosial Al-Ahkam: Jurnal Ilmu Syari'ah dan Hukum JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah)
Arwin Juli Rakhmadi
Universitas Muhammadiyah Sumatera Utara
Religion Arts Humanities Astronomy Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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DESIGN OF REMOTING TELESCOPE IN OBSERVATORIUM ILMU FALAK UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA Ajraini Nazli; Hariyadi Putraga; Muhammad Hidayat; Arwin Juli Rakhmadi
Proceeding International Seminar of Islamic Studies INSIS 3 (February 2022)
Publisher : Proceeding International Seminar of Islamic Studies

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Abstract

Disruption of technology is able to provide wider access in astronomy field. One of them through access the observation by using various remoting intruments. The easier way to use instrument particularly telescopes will facilitate data collection for both amateur and professional astronomers. In addition, the open access can increase public interest toward astronomy. Therefore, Observatorium Ilmu Falak Universitas Muhammadiyah Sumatera Utara (OIF UMSU) designs and develops remote telescope service based on the internet network. The system controls telescope via computer. The system consists the Astronomical Imaging System (AIS) and Human-machine Interface (HMI). The telescope designed with remote system is the Bresser Messier AR-152L (Diameter 152 mm dan focal ratio f/7,9) and Losmandy G11 Gemini mount. The system uses two computers. First computer is connected to the telescope devices and the second is used for remote control. The remoting telescope requires a stellarium, sharpcap, and teamviewer, as well as WiFi connection. The research is expected to help and give solution for researchers restricted by access and distance to observe celestial object using remoting telescope.Keywords: Telescope, Remote, OIF UMSU
Institusi Mikat Perkembangan dan Peran Sosial-Intelektualnya di Dunia Islam Gunawan Gunawan; Hasrian Rudi Setiawan; Arwin Juli Rakhmadi
Proceeding International Seminar of Islamic Studies INSIS 1 (December 2019)
Publisher : Proceeding International Seminar of Islamic Studies

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Abstract

Mikat dalam bahasa Arab disebutm?q?t(jamak:maw?q?t). Secara bahasa bermakna waktu yang diperuntukkan sebagai aktifitas.M?q?tjuga bermakna tempat(maudhi). Dalam ungkapan bahasa Arab dikemukakan, ini adalahm?q?t(tempat) bagi penduduk Syam untuk melaksanakan ihram (ar-Razi, 2003: 390, Ibn Manzhur, t.t.: 4887). Al-Qannuji (w. 1307/1889) dalamAbajad al-Ul?msecara khusus mendefinisikan mikat sebagai ilmu tentang waktu-waktu salat. Masih menurutnya, mikat adalah interval waktu bagi manusia di berbagai tempat dan negeri-negeri tatkala hendak menunaikan ibadah haji dan umrah (al-Qannuji, 1978: 549).
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

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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.
Konsep-Konsep Matematika oleh Ilmuwan Muslim Muhammad Hidayat; Hasrian Rudi Setiawan; Arwin Juli Rakhmadi
Proceeding International Seminar of Islamic Studies Vol 1, No 1 (2019): Proceeding International Seminar of Islamic Studies
Publisher : Proceeding International Seminar of Islamic Studies

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Abstract

Mathematic has been regarded as a subject that is often presented with a series of technical procedures without meaning in various syllabi and textbooks. Mathematics also functions to solve problems of daily life and worship of Muslims such as the calculation of Zakat, Inheritance, Qibla Direction, Prayer Times, Eclipses, Hijriyah Calendar etc.Some mathematical concepts described by Islamic Scientist Al-Khawarizmi (232 H / 846 AD) The greatest work of Al-Khawarizmi is his work in the field of al-jabar written in the span of 813-833 AD, titled (Kitab fi al-Jabr wa al- Muqabala) Many scientists give the name al-Khawarizmi as "Father of Algebra." Although many of them state that al-Khawarizmi is inspired by other scientists such as Diophantus, Euclid, Heron, Brahmagupta, and Aryabhata, in this paper we will discuss mathematical concepts. Muslim scientists and al-Khawarizmi's State of the Art will be discussed which distinguishes it from other Scientist works.
المرصد الفلكي الجامعة المحمدية سومطرة الشمالية دوره وإسهاماته في تطور علم الفلك في إندونيسيا Arwin Juli Rakhmadi; Hasrian Rudi Setiawan
Proceeding International Seminar of Islamic Studies INSIS 1 (December 2019)
Publisher : Proceeding International Seminar of Islamic Studies

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Abstract

يعتبر علم الفلك من العلوم الطبيعية التي حظيت باهتمام كثير من الناس عبر الزمن . قد شهد في السنوات الأخيرة في إندونيسيا ظهيرة مراصد فلكي التي تهتم أمورا شتى . فالمرصد الفلكي الجامعة المحمدية سومطرة الشمالية (OIF UMSU) هي إحدى المراصد الفلكية التي لعبت دورا هاما في تطوير علم الفلك في إندونيسيا وخاصة في سومطرة الشمالية . ففي هذا المرصد موجودة الأدوات الفلكية قديمة وحديثة متنوعة . فمن دورها وإسهاماتها هي الإعلام للطلاب في كل المستوى عن مظاهر فلكية ، تدريب علم الفلك للطلاب الجامعية ، والبحوث الفلكية ، وغيرها . ووجود هذا المرصد حقيقة هي تقدير لتطور العلوم والتقنية وبالتالي هي الحضارة نفسها .
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.
PENENTUAN WAKTU MALAM MENGGUNAKAN SKY QUALITY METER DENGAN PENDEKATAN MOVING AVERAGE Hariyadi Putraga; Arwin Juli Rakhmadi; Muhammad Hidayat; Muhammad Dimas Firdaus
ORBITA: Jurnal Kajian, Inovasi dan Aplikasi Pendidikan Fisika Vol 8, No 2 (2022): November
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (246.714 KB) | DOI: 10.31764/orbita.v8i2.11363

Abstract

ABSTRAKDalam penelitian ini akan diukur tingkat kecerahan langit untuk mengetahui waktu menghilangnya cahaya merah syafaq yang ada di langit setelah matahari terbenam pada malam hari. Awal waktu malam atau waktu isya diisyaratkan oleh beberapa ulama dengan menghilangnya mega merah atau saat langit benar-benar gelap. Dalam pengukuran tingkat kecerahan langit menggunakan alat Sky Quality Meter (SQM) yang merupakan salah satu teknologi sensor cahaya non image dengan  pendekatan pengolahan menggunakan metode Moving Average. Data diperoleh dari SQM yang diambil selama 12 hari berturut-turut pada bulan Maret saat Matahari berada di dekat Ekuator. Hasil penelitian dalam data yang telah diolah dan diproses menunjukkan bahwa awal waktu langit mulai gelap paling awal pada pukul 19:39:19 WIB pada dip matahari 16° 22’ 17” dan paling akhir pada pukul 19:46:12 WIB pada dip 17° 28’ 47”. Dapat disimpulkan dalam penelitian ini cahaya syafaq menghilang berdasarkan pengamatan dan pengolahan menggunakan metode Moving Average menunjukkan pada range 16° 22’ 17” sampai 17° 28’ 47”. Kata kunci: awal malam; isya; SQM; moving average. ABSTRACTIn this study, the night sky brightness was measured to determine the disappearance time of the reddish light of syafaq in the sky after sunset. The beginning of the night or Isya is hinted at by some scholars with the disappearance of the red sky or when the sky is completely dark. The measurement of the sky brightness using the Sky Quality Meter (SQM) instrument which is one of the non-image light sensor technologies with the Moving Average approach method. The data were obtained from 12 consecutive days in March when the Sun was near the Equator. The results of this study show that at the beginning of the time the sky begins to darken earliest at 19:39:19 WIB on the solar dip at 16° 22' 17" and the latest at 19:46:12 WIB at dip 17° 28' 47". It can be concluded in this study that the light disappear based on observation and processing using the Moving Average method shows in the range of 16° 22' 17" to 17° 28' 47". Keywords: night; isya; sqm; moving average.
Kajian Ilmu Falak Syaikh Muhammad Arsyad Banjar: Analisis Naskah Mas'alah Al-Qiblah Fi l-Batawy Arwin Juli Rakhmadi; Hasrian Rudi Setiawan; Muhammad Hidayat
Jumantara: Jurnal Manuskrip Nusantara Vol 13, No 2 (2022): Desember
Publisher : Perpustakaan Nasional RI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37014/jumantara.v13i2.1469

Abstract

Shaykh Muhammad Arsyad Banjar is a figure of fiqh and astronomy Nusantara who has a great influence on Islamic scholarly discourse in Nusantara. One of his astronomical works is Mas’alah al-Qiblah fi l-Batawy which discusses various issues of Qibla direction that developed in the community, especially among Baetawi residents at that time. This manuscript is stored in UB Leiden, Netherlands. This manuscript provides information about the dynamics of Islam that developed in society at that time, especially in matters of Qibla direction. This manuscript also informs that the phenomenon of the inaccuracy of the Qibla direction of a mosque at that time. Shaykh Muhammad Arsyad Banjar with his knowledge reconstructed the Qibla direction, including with naqli arguments, then tested directly with calculations and tools, one of the tools used was a compass (bait al-ibrah). In reality he received rejection and opposition from a number of figures and the community at that time. This study is intended to reveal this phenomenon which is represented in the Mas’alah al-Qiblah fi l-Batawy manuscript.
Studi Konstelasi Peradaban Arab dari Kitab Suwar Al-Kawakib Al-Thabita Menggunakan Software Stellarium Hariyadi Putraga; Arwin Juli Rakhmadi; Muhammad Hidayat; Muhammad Dimas Firdaus
YUDISIA : Jurnal Pemikiran Hukum dan Hukum Islam Vol 13, No 2 (2022): YUDISIA: Jurnal Pemikiran Hukum dan Hukum Islam
Publisher : Program Studi Hukum Keluarga Islam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21043/yudisia.v13i2.16965

Abstract

Constellations originating from Arab civilization are still very little known and studied. Kitab Al-Kawakibal-Thabitahal-Sufi contains stars that include star coordinates and approximate magnitudes, as well as star details with their graphs. This study aims to examine the differences in the number of stars in the constellation samples, compare the visual appearance of the illustrations on the Stellarium software and study the differences in the shapes of the western constellations and the Arab constellations. This research is a literature study by analyzing data on the number of stars, their position, and presentation of the constellations written by al-Sufi in his work Al-Kawakib Al-Thabita SuwarThe number of stars in the sample constellations, the difference in illustration comes from the orientalization of the figures and at first glance, the magnitudes of the stars in al-Ṣūfi's works are similar to those of Ptolemy's. Al-Sufi identified a total of 134 additional stars, 65 stars located in the North constellation, 41 stars in the Zodiac constellation, and 28 stars in the Southern constellation. His observations show that the magnitude values of 520 stars out of a total of 1022 stars are identical between al-Sufi and Ptolemy. Stellarium provides an excellent visual presentation of the depiction of constellations in Arab civilization according to the book by al-Sufi.Konstelasi yang berasal dari peradaban Arab masih sedikit sekali dikenal dan dipelajari. Kitab al-Kawakib al-Thabitah karya Al-Ṣūfi berisi bintang yang mencantumkan koordinat bintang dan perkiraan magnitudo, serta detail bintang dengan grafiknya. Penelitian ini bertujuanuntuk mengkaji perbedaan jumlah bintang pada sampel konstelasi, membandingkan tampilan visual ilustrasinya pada software Stellarium dan mempelajari perbedaan bentuk konstelasi barat dan konstelasi Arab. Penelitian ini merupakan kajian Pustaka dengan melakukan analisis data jumlah bintang, posisi dan penyajian rasi bintang yang dituliskan oleh al-sufi dalam karyanya Suwar Al-Kawakib Al-Thabita. Hasil penelitian menunjukkan perbedaan antara konstelasi dari buku Almagest dan kitab al-Kawakibal-Thabitah berupa perbedaan jumlah bintang pada konstelasi sampel, perbedaan ilustrasi berasal dari orientalisasi figur dan Sepintas besar magnitude bintang-bintang pada karya al-Ṣufi mirip dengan karya Ptolemy. Al-Sufi mengidentifikasi secara total jumlah 134 bintang tambahan, 65 bintang terletak di rasi bintang Utara, 41 bintang in rasi bintang Zodiac dan 28 bintang di rasi bintang Selatan. Pengamatannya menunjukkan bahwa nilai magnitudo 520 bintang dari total 1022 bintang yang identik antara Al-Sufi dan Ptolemy. Stellarium memberikan sajian visual yang sangat baik terhadap penggambaran konstelasi pada peradaban Arab menurut kitab karya Al-Sufi.
Co-Authors Abu Yazid Raisal Ajraini Nazli Ajraini Nazli Amrizal Amrizal Amrizal Amrizal Andika, Muhammad Sadam Cemda, Abdul Rahman Fanreza, Robie Firdaus, Muhammad Dimas Ginting, Nurman Gunawan Gunawan Habibullah Ritonga Hariyadi Putraga Hasrian Rudi Setiawan Hermawan, Leo Hidayat, Muhammad Ida Hanifah Ismail Ismail Ismail Ismail Isra Hayati Khair, Alfath Leo Hermawan Marataon Ritonga Marataon Ritonga Mario Kasduri Muhammad Dimas Firdaus Muhammad Dimas Firdaus Muhammad Dimas Firdaus Muhammad Hidayat Muhammad Hidayat Muhammad Qorib Munawir Pasaribu Nasution, Makromatul afifah Nor Azam bin Mat Noor Panjaitan, Nur Nilam Sary Pradesyah, Riyan Radiman Radiman Radiman, Radiman Rangkuti, Ahmad Zuhri Riskiyan Hadi Robby Pamungkas Robie, Fanreza Ruslandi Ruslandi Sinaga, Roynanda Thariq, Muhammad Zailani Zailani Zailani Zailani Zebua, Marfirah Syam