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All Journal Al-Manahij: Jurnal Kajian Hukum Islam Al-Mizan (e-Journal) Islam Futura Jurnal Al-Ijtimaiyyah International Journal Ihya' 'Ulum al-Din Al-MARSHAD: Jurnal Astronomi Islam dan Ilmu-Ilmu Berkaitan Islamic Review : Jurnal Riset dan Kajian Keislaman Al-Qalam Jurisprudensi: Jurnal Ilmu Syariah, Perundang-undangan, Ekonomi Islam Manhaj: Jurnal Penelitian dan Pengabdian Masyarakat Ihsan: Jurnal Pengabdian Masyarakat Jurnal Pengabdian Masyarakat Multidisiplin ELFALAKY: Jurnal Ilmu Falak Al-Hilal: Journal of Islamic Astronomy Al-Muamalat : Jurnal Ekonomi Syariah Al-Afaq: Jurnal Ilmu Falak dan Astronomi Al-Manahij : Jurnal Kajian Hukum Islam Syarah: Jurnal Hukum Islam dan Ekonomi Astroislamica: Journal of Islamic Astronomy Jurnal Malikussaleh Mengabdi
Ismail Ismail
UIN Sultanah Nahrasiyah Lhokseumawe
Religion Aerospace Engineering Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Analisis Tingkat Kecerahan Langit Malam Terhadap Visibilitas Hilal Menggunakan Sky Quality Meter di Observatorium Malikussaleh IAIN Lhokseumawe Devina Kharida Alhan; Ruslandi Ruslandi; Ismail Ismail
Astroislamica: Journal of Islamic Astronomy Vol. 4 No. 1 (2025): 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.v4i1.3374

Abstract

In the dark of the night, the sky offers wonders like the crescent moon (hilal), which marks the beginning of the Islamic month. The hilal is often observed at the Malikussaleh Observatory, IAIN Lhokseumawe. This study uses a Sky Quality Meter (SQM) to measure the night sky brightness and how it affects hilal visibility. This field research employs a qualitative approach with a descriptive method. Primary data is obtained from direct observations using the SQM before and after sunset, while secondary data comes from relevant literature. The study finds that the night sky brightness at the observatory is Class 5 on the Bortle Scale, with an average of 19.80 MPSAS, categorized as Suburban Sky. The average brightness during hilal observation is -3.03397 v mag, while the hilal magnitude is -7.36 v mag. Therefore, the hilal can be observed if its magnitude is lower than the night sky brightness.
Penentuan Azimut Kiblat Masjid Kampus UIN Sultanah Nahrasiyah Lhokseumawe Menggunakan Rumus Segitiga Bola Berbasis Python Ravik Walhidayah; Ismail Ismail
Astroislamica: Journal of Islamic Astronomy Vol. 4 No. 2 (2025): Astroislamica: Journal of Islamic Astronomy (Desember)
Publisher : Islamic Astronomy Department, Sharia and Law Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47766/astroislamica.v4i2.6012

Abstract

Prayer time is a compulsory act of worship for Muslims, the validity of which depends on the fulfillment of specific conditions, one of which is facing the qibla, the direction of the Kaaba in the Masjid al-Haram, Makkah. Therefore, accurate determination of the qibla direction is a crucial aspect of performing prayer. Various methods have been used to determine the qibla direction, such as the annual Rashdul Qiblah phenomenon and calculations based on spherical trigonometry. The Rashdul Qiblah method is simple and accurate; however, its application is limited to specific times. In contrast, spherical trigonometry can be applied at any time and offers high precision, but the calculation process is relatively complex and prone to human error. This study aims to implement spherical trigonometry using the Python programming language to simplify the process of qibla direction determination and to evaluate its accuracy. The research employs a library research method with a computational simulation approach. The qibla direction is calculated by inputting the latitude and longitude coordinates of the location and the Kaaba into a Python program, and the results are then compared with field measurement data obtained using a theodolite. The results show that the Python-based qibla direction calculation produces an azimuth value with a difference of 32.62 arcseconds compared to the theodolite measurements. This difference is considered very small and does not practically affect the accuracy of the qibla direction. Therefore, the proposed method is proven to be accurate, efficient, and suitable as a modern alternative for determining the qibla direction.
Application of Artificial Intelligence in Automatic Crescent Moon Detection System Using Teachable Machine Model on Web Platform Walhidayah, Ravik; Ismail, Ismail
Al-Marshad: Jurnal Astronomi Islam dan Ilmu-Ilmu Berkaitan Vol 11, No 2 (2025): Al-Marshad
Publisher : University of Muhammadiyah Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/jam.v11i2.26166

Abstract

The issue of the visibility of the new moon (hilal) often becomes a recurring debate, especially during two major Islamic occasions: the determination of the beginning of Ramadan and the start of Dhu al-Hijjah for Eid al-Adha. In the practice of rukyat (moon sighting), claims of hilal sightings are frequently made without strong or objective evidence. Therefore, the utilization of artificial intelligence technology, particularly in the field of image classification, presents a potential solution to improve the accuracy and objectivity of the moon sighting process. This research employs an image classification model trained using the Teachable Machine platform. The trained model is then integrated into a websitesite developed using HTML, CSS, and Python, and hosted via the github service. Through this websitesite, rukyat observers can upload photos of the sky captured during moon observation. The AI model will then analyze the uploaded image to determine whether the hilal is visible or not. This system is expected to serve as a scientific and modern tool to support the moon sighting process.
An Analysis of the Effectiveness of the Apexel Lens as a Non-Conventional Optical Device for Hilal Observation Muhammad Khalil Mubarraq; Ravik Walhidayah; Ismail
AL - AFAQ : Jurnal Ilmu Falak dan Astronomi Vol. 8 No. 1 (2026): Juni 2026
Publisher : Universitas Islam Negeri Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Crescent moon (Hilal) is a primary indicator to determine the onset of a new month in Hijri calendar, but access limitation to the conventional optical instrument such as telescope and theodolite remains a significant constaint across various strategic observation sites. This study aims to analyze the feasilibity of the Apexel telephoto lens as a non-conventional optical instrument for hilal observation, while also evaluating its potential as a screening tool to assessing the suitability of rukyat (crescent sighting) sites. The research employed a field-experimental approach, by comparing the optical performance of the Apexel lens mounted on a Google Pixel 5 with a standard astronomical telescope F70060 Telescope during Hilal observation conducted between November 21–24, 2025 at the Malikussaleh Observatory. The result demonstrate that Hilal image was successfully documented on November 23, 2025 with an altitude of 6° above the horizon. This outcome was significantly supported by favorable atmospheric conditions, characterized by cloud cover below 10%, which enabled the camera sensor to compensate for the Apexel lens's aperture limitations in capturing the low-contrast luminosity of the thin crescent. Conversely, detection attempts on other days failed due to adverse atmospheric conditions, wherein dense cloud cover attenuated hilal luminosity beyond the instrument's sensitivity threshold. From economic standpoint, this device represents a viable alternative for grassroots rukyat communities in remote areas, given its affordability and accessibility. Accordingly, Apexel telephoto lens has a potential to be a supplementary instrument for Hilal observation in the context of site exploration and public education, with the caveat that its performance is highly depends on sky clearance and astronomical parameters that meets the minimum visibility criteria.
Edukasi Literasi Akurasi Digital Arah Kiblat bagi Masyarakat Gampong Paloh Bate Kota Lhokseumawe Putri, Hasna Tuddar; Ismail, Ismail; Ukhti, Laiyina; Walhidayah, Ravik; Putri, Najwa Aulia
Jurnal Malikussaleh Mengabdi Vol. 5 No. 2 (2026): Jurnal Malikussaleh Mengabdi, April 2026
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jmm.v5i2.26238

Abstract

Arah kiblat merupakan syarat sah dalam pelaksanaan ibadah salat, namun perhatian terhadap akurasinya di lingkungan rumah tempat tinggal masih sangat minim dibandingkan dengan bangunan masjid. Di Gampong Paloh Bate, Kota Lhokseumawe, ditemukan permasalahan serius berupa deviasi arah kiblat rumah warga yang berkisar antara 4° hingga 33° karena penggunaan metode tradisional yang kurang akurat. Selain itu, keterbatasan literasi digital masyarakat menjadi penghambat dalam pemanfaatan teknologi navigasi modern. Pengabdian ini bertujuan untuk meningkatkan literasi akurasi digital masyarakat melalui pendampingan teknis penentuan arah kiblat yang presisi. Metode yang digunakan adalah Participatory Action Research (PAR) yang melibatkan tahapan sosialisasi, pelatihan penggunaan aplikasi digital, serta aksi nyata verifikasi lapangan. Alat utama yang digunakan adalah aplikasi Qur’an Kemenag yang telah terkalibrasi. Hasil pengabdian menunjukkan adanya peningkatan signifikan pada aspek kognitif dan keterampilan masyarakat, di mana pemahaman mengenai konsep arah kiblat meningkat menjadi 83,3% dan kemampuan menggunakan aplikasi digital mencapai 87,5%. Secara teknis, pendampingan ini berhasil mengoreksi arah kiblat pada 30 rumah warga menjadi sangat akurat dengan rentang deviasi hanya 0° sampai 2,5°. Dampak dari kegiatan ini adalah tumbuhnya kemandirian masyarakat dalam memverifikasi arah kiblat secara mandiri serta terciptanya ketenangan spiritual dalam beribadah. Salah satu luaran yang diperoleh dari pengabdian ini meliputi peningkatan kapasitas kader lokal literasi digital arah kiblat. Melalui integrasi teknologi dan partisipasi aktif, masyarakat kini mampu mentransformasi praktik ibadah tradisional menuju praktik yang lebih saintifik dan akurat.
Co-Authors Abdul Ghofur Abdul Ghofur Arwin Juli Rakhmadi Bastiar Bastiar Cut Nazar Mutia Hanum Devina Kharida Alhan Dikson T. Yasin Hariyadi Putraga Hasna Tuddar Putri Hasna Tuddar Putri, Hasna Tuddar Husnaini Husnaini Kamilan, Ikhsan Laiyina Ukhti Mahzan Mahzan Marataon Ritonga Maulana, Nora Muhammad Dimas Firdaus Muhammad Fauzi Muhammad Khalil Mubarraq Mulyani, Rita Mutia, Intan Putri, Najwa Aulia Rasyidin Rasyidin Ravik Walhidayah Ravik Walhidayah Rizqi Wahyudi Ruslandi Ruslandi Safwan Safwan, Safwan Syahri Ramadhani T. Yasin, Dikson Ukhti, Laiyina Walhidayah, Ravik Zulfiah