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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 MIQOT: Jurnal Ilmu-ilmu Keislaman MAHKAMAH: Jurnal Kajian Hukum Islam JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Titian Ilmu: Jurnal Ilmiah Multi Sciences 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 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 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 Azkayra: Jurnal Pengabdian Masyarakat dan Sosial Al-Ahkam: Jurnal Ilmu Syari'ah dan Hukum Taushiah: Jurnal Hukum, Pendidikan dan Kemasyarakatan JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah)
Arwin Juli Rakhmadi
Universitas Muhammadiyah Sumatera Utara
Religion Arts Humanities Astronomy 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 Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Frequency-Based Analysis of Mosque Qibla Errors in Medan Rakhmadi, Arwin Juli; Putraga, Hariyadi; Ritonga, Marataon; Ismail, Ismail
Al-Hilal: Journal of Islamic Astronomy Vol. 7 No. 1 (2025)
Publisher : Fakultas Syari'ah dan Hukum UIN Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/al-hilal.2025.7.1.24203

Abstract

Mosque plays a vital role in supporting the performance of prayer comfortably and solemnly. However, one of the most crucial elements in mosque construction is the accuracy of the qibla direction facing the Kaaba. In cities far from the Kaaba, such as Medan, determining the qibla direction cannot be done visually and requires precise astronomical calculations and technical approaches. The problem that arises is the continued presence of mosques with qibla directions deviating from the correct orientation, which can affect the quality of worship for Muslims. This study uses a specially reduced mosque Qibla measurement sample data in Medan city. This paper analyzes data from 38 mosque samples with Qibla direction errors, which were re-measured by the UMSU OIF team. The data were then processed using a frequency distribution method to provide an overview of the error distribution in mosque Qibla directions across the city of Medan. This study found that the error often seen is a deviation of 9-12 degrees from the Qibla direction, and the mistake factors. This study also found that the misalignment of Qibla directions in Medan is mainly due to prioritizing land efficiency over directional accuracy during mosque construction, as well as relying on general assumptions and previously heard fatwas rather than precise astronomical calculations.
Effectiveness Test of iOptron Cube-G Telescope for Hilal Observation Firdaus, Muhammad Dimas; Putraga, Hariyadi; Butar-Butar, Arwin Juli Rakhmadi; Hidayat, Muhammad
AL - AFAQ : Jurnal Ilmu Falak dan Astronomi Vol. 4 No. 2 (2022): Desember 2022
Publisher : Universitas Islam Negeri Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/afaq.v4i2.5341

Abstract

The use of robotic telescopes in the practice of observing the Hilal in Indonesia is quite widespread. One type of telescope that is widely used by observers is the iOptron Cube. Telescopes with an alt-azimuth mounting type with GPS features can be used easily by observers who observes Hilal on a portable basis. The effectiveness of using this telescope needs to be studied more deeply because pointing accuracy and alt-azimuth tracking mounting capabilities require good computational ability to obtain the expected results. After being tested with two configurations (narrow and wide field of view) and seeing the various supporting features embedded in this telescope, it can be concluded that the iOptron Cube is quite effective for observing Hilal.
Analisis Peningkatan Polusi Cahaya Berdasarkan Pembacaan SQM dan Citra Satelit VIIRS tahun 2017 – 2022 di Kota Medan Putraga, Hariyadi; Raisal, Abu Yazid; Firdaus, Muhammad Dimas; Rakhmadi, Arwin Juli
AL - AFAQ : Jurnal Ilmu Falak dan Astronomi Vol. 5 No. 1 (2023): Juni 2023
Publisher : Universitas Islam Negeri Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/afaq.v5i1.7250

Abstract

An analysis of light pollution has been carried out based on the reading of a photometercalled Sky Quality Meter (SQM) which shows the level of light pollution expressed in the MPASSreference. This study aims to determine the increase in light pollution in the city of Medan and to findout the implications for astronomical observations there. Light pollution distribution maps data andradiance quantity data are obtained through a platform that presents light pollution mapping and isfurther analyzed with literacy studies. Its Found that the radiance value is proportional to the level ofpollution and is influenced by the population of civilization in Medan from 2017 to 2022 soastronomical observations and phenomena are also decreasing to be visible.
Makna Kata Buruj dalam Al-Qur’an Perspektif Pengamatan Astronomis Firdaus, Muhammad Dimas; Putraga, Hariyadi; Hidayat, Muhammad; Rakhmadi, Arwin Juli
AL - AFAQ : Jurnal Ilmu Falak dan Astronomi Vol. 5 No. 2 (2023): Desember 2023
Publisher : Universitas Islam Negeri Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/afaq.v5i2.7488

Abstract

Al-Qur’an as the holy book of Muslims contains many themes of discussion in it, ranging from faith, sharia, stories and science. One of the discussions related to science is assembling celestial bodies. Buruj is one of the celestial bodies mentioned in Al-Qur'an, in total there are three verses that discuss the buruj as a celestial body. In some literature, buruj is interpreted as a big star, a big planet, a constellation, and a set of stars. From these meanings, a common thread can be drawn that the buruj is understood as a set of stars. In the previous research used an interpretive perspective, this paper tries to understand the meaning of the buruj more broadly by using the perspective of astronomical observations conducted by the OIF UMSU team. From the observations, it is known that there are several types of sets of stars, such as constellations, open star clusters, globular star clusters, and galaxies. So that the meaning of the buruj in the Qur'an as a celestial body is a set of beautiful stars that humans can observe, not limited to the constellations which number 12, 48 or 88.
Hilal Observation using LRGB Filters Firdaus, Muhammad Dimas; Putraga, Hariyadi; Ritonga, Marataon; Rakhmadi, Arwin Juli
AL - AFAQ : Jurnal Ilmu Falak dan Astronomi Vol. 6 No. 2 (2024): Desember 2024
Publisher : Universitas Islam Negeri Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/afaq.v6i2.10928

Abstract

The technology used in hilal observation continues to develop. Most recently, using filters has become one of the options in hilal observation. Several filters can be used, ranging from low wavelengths like ultraviolet to high wavelengths like infrared. In some ideas, there needs to be a limit to the use of filters, the human eye's ability as a benchmark for the filter used. The human eye is sensitive to light with visual wavelengths, and one type of filter in this range is the LRGB filter. In this study, hilal observations were made on four filters and compared to find out which filter is better at increasing the contrast of hilal against the background. Using Michelson and Weber contrast as the definition of contrast to determine the comparison of the brightness value of the object with the background.  From the observations made, it is found that the R filter will produce higher contrast values at low altitudes, followed by the L, G, and B filters. However, at higher altitudes, the contrast values of the L and R filters are similar, while the G and B filters remain low.
Model Komunikasi Sains OIF UMSU dalam Pelatihan Ilmu Falak di Vihara Vimalakirti Sinaga, Roynanda; Rakhmadi, Arwin Juli; Putraga, Hariyadi; Andika, Muhammad Sadam; Thariq, Muhammad
Jurnal Ilmu Pemerintahan, Administrasi Publik, dan Ilmu Komunikasi (JIPIKOM) Vol 7, No 2 (2025): JIPIKOM OKTOBER
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jipikom.v7i2.6239

Abstract

Penelitian ini menganalisis model komunikasi sains yang diterapkan oleh Observatorium Ilmu Falak Universitas Muhammadiyah Sumatera Utara (OIF UMSU) dalam pelatihan Ilmu Falak di Vihara Vimalakirti, Medan. Kegiatan ini melibatkan anak-anak usia TK dan SD dari komunitas Buddhis beserta orang tua mereka. Menggunakan pendekatan kualitatif dan wawancara semi-terstruktur, penelitian ini mengidentifikasi penerapan empat model komunikasi sains: defisit, dialog, partisipatif, dan kontekstual. Model defisit berfungsi sebagai fondasi pengetahuan awal, sedangkan model dialog dan partisipatif mendorong keterlibatan peserta melalui diskusi dan eksperimen seperti peluncuran roket air dan pengamatan Matahari. Model kontekstual tampak dari penyesuaian kegiatan terhadap budaya dan agama peserta serta kerja sama lintas institusi. Hasil penelitian menunjukkan bahwa pendekatan komunikasi sains yang inklusif dan berbasis nilai toleransi efektif dalam meningkatkan literasi sains dan membangun ruang dialog antaragama. Studi ini menawarkan model edukasi sains transformatif bagi masyarakat majemuk.
ANALISIS DAMPAK POLUSI CAHAYA LAMPU ARTIFISIAL TERHADAP KECERLANGAN LANGIT MALAM MENGGUNAKAN SKY QUALITY METER (Studi Kasus Barus-Sumatera Utara): Studi Kasus Barus-Sumatera Utara Firdaus, Muhammad Dimas; Butar-Butar, Arwin Juli Rakhmadi; Putraga, Hariyadi; Hidayat, Muhammad
ELFALAKY: Jurnal Ilmu Falak Vol 6 No 2 (2022): Desember
Publisher : UIN ALAUDDIN MAKASSAR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/ifk.v6i2.33787

Abstract

The brightness of the night sky is a necessity in astronomical observations. Sky with minimal light pollution can be optimized for observation and research. Light pollution is an obstacle in astronomical observations, one of the light pollution that affects the night sky a lot is artificial lights that are not properly conditioned. In this study, it is explained how the impact of artificial lights on good sky brightness using the Sky Quality Meter (SQM). By observing several nights, it was found that locations with a lot of light exposure can make the sky brighter ~3.3 times compared to locations with minimal light.
Implementasi Metode Mubasyaroh pada Mata Pelajaran Bahasa Arab di Pondok Pesantren Ar-Raudlatul Hasanah Medan Zebua, Marfirah Syam; Rakhmadi, Arwin Juli
EDU SOCIETY: JURNAL PENDIDIKAN, ILMU SOSIAL DAN PENGABDIAN KEPADA MASYARAKAT Vol. 3 No. 3 (2023): Oktober 2023-Januari 2024
Publisher : Association of Islamic Education Managers (Permapendis) Indonesia, North Sumatra Province

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56832/edu.v3i3.384

Abstract

Penelitian ini bertujuan untuk mengetahui Implementasi Metode Mubasyaroh pada pembelajaran bahasa Arab di Pondok Pesantren Ar-Raudlatul Hasanah Medan. Penelitian ini didapatkan atas asumsi bahwa Metode Mubasyaroh merupakan salah satu metode yang baik untuk dijadikan metode dalam pembelajaran bahasa Arab dalam meningkatkan kualitas memahami dan mengucapkannya. Metode penelitian ini menggunakan jenis penelitian kualitatif. Teknik pengumpulan data yang digunakan dalam penelitian ini adalah observasi, wawancara, dan dokumentasi. Sedangkan analisis data dalam penelitian ini menggunakan analisis kaelan. Teknik keabsahan data menggunakan analisis tringulasi. Berdasarkan hasil penelitian dan analisis data disimpulkan bahwa Metode mubasyaroh adalah metode yang efektif digunakan di pesantren Ar-Raudlatul Hasanah Medan, mengingat metode ini dapat memudahkan siswa dalam memahami kosakata bahasa Arab dengan baik meskipun masih terdapat beberapa siswa yang kesulitan menghafal kosakata bahasa Arab disebabkan oleh masalah internal.
Tolerance and Moderation in the Formulation of A Global Islamic Calendar Qorib, Muhammad; Rakhmadi, Arwin Juli
Al-Fikru: Jurnal Ilmiah Vol. 17 No. 2 (2023): Desember (2023)
Publisher : STAI Serdang Lubuk Pakam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51672/alfikru.v17i2.291

Abstract

The Global Islamic Calendar is a new breakthrough in the modern era with the aim of uniting all Muslims in a unified and integrated time scheduling system. In this regard, this study aims to analyze the dynamics of the global calendar and solutions to minimize differences in views. The research method used is qualitative based on literature study. Data analysis was conducted using content analysis. The results of the study revealed that the idea of a global calendar was motivated by the frequent differences in dropping the days of worship, especially Ramadan, Shawwal, and Zulhijah, not on the same day, even the difference reached more than two days. The idea of the Global Islamic Calendar has been rejected by a number of parties with all the reasons and rebuttals that cause the dynamics and discourse about it to continue to emerge. Considering the sharp differences, a moderate and tolerant attitude is needed from all parties because this issue is a fiqh issue that is prone to differences of opinion. Moderation and tolerance are the keys to the realization of the Global Islamic Calendar. This research certainly has implications for the improvement of Islamic knowledge, and also as an effort to unite the ukhuwah of the people.
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.
Co-Authors Abu Yazid Raisal Ahmad Abdulwfa Ahmad Zuhri Rangkuti Ajraini Nazli Ajraini Nazli Amrizal Amrizal Amrizal, Amrizal Andika, Muhammad Sadam Cemda, Abdul Rahman Fanreza, Robie Firdaus, Muhammad Dimas Gunawan Gunawan Habibullah Ritonga Hariyadi Putraga Hasrian Rudi Setiawan Hermawan, Leo Hidayat, Muhammad Ida Hanifah Ismail Ismail Isra Hayati Julia Zain Khair, Alfath Leo Hermawan Makromatul Afifah Nasution Marataon Ritonga Mario Kasduri Muhammad Dimas Firdaus Muhammad Dimas Firdaus Muhammad Hidayat Muhammad Qorib Nor Azam bin Mat Noor Nur Nilam Sary Panjaitan Pasaribu, Munawir Radiman Radiman Radiman, Radiman Riskiyan Hadi Robby Pamungkas Ruslandi Ruslandi Sinaga, Roynanda Sumiati Sumiati Thariq, Muhammad Zailani Zailani Zailani, Zailani Zebua, Marfirah Syam