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Astroislamica: Journal of Islamic Astronomy
Published by Institut Agama Islam Negeri Lhokseumawe
ISSN : -     EISSN : 29630290     DOI : https://doi.org/10.47766/astroislamica
Core Subject : Religion, Science,
Religion Astronomy
Astroislamica: Journal of Islamic Astronomy is a journal that studies Islamic astronomy and Islamic laws related to astronomy. Astroislamica focuses on Islamic astronomy topics such as Qibla direction, prayer times, calendars, and eclipses through multiple perspectives, including Islamic law, mathematics, sociology, anthropology, politics, astrophotography, climatology, geophysics, and philology. E-ISSN 2963-0290 (Online - Elektronik)
Arjuna Subject : Fisika dan Astronomi - Astronomi dan Astrofisika
Articles 54 Documents
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Pengaruh Awan Terhadap Visibilitas Hilal di POB Blang Tiron Bukit Pole Kompleks Perumahan PT. Perta Arun Gas Lhokseumawe Taufiq Hidayat Panjaitan; Machzumy Jafar M.Ali; Muhammad Diah
Astroislamica: Journal of Islamic Astronomy Vol. 2 No. 2 (2023): 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.v2i2.1920

Abstract

During the month of Ramadan, Shawal, zulqaidah and zulhijjah, there were no sights of hilal due to the presence of cloud-like natural factors that covered the hilal at the western horizon at the time of observation. The title of this research is The Impact of Clouds on the Visibility of Hilal in Blang Tiron Hill Pole Complex Housing PT. Perta Arun Gas Lhokseumawe with two formula problems namely: 1. How is the category and characteristics of clouds in the horizon of Blang Tyron POB. 2. The impact of the cloud on the visibility of hilal at Blang tiron. In conducting research, the author uses qualitative methods using field research. The primary data sources are observations and interviews with the relevant parties, while the secondary data is documents, books, research journals and related articles. The data collection methods used are observation methods, interviews and documentation studies. The results of this study show that clouds are the factor that covers the hilal in the POB Blang tyron at the time of observations of Ramadan, Shawal, Zulqaidah and Zulhijjah are low clouds of cumulus clouds, medium clouds altostratus, and high clouds comulunimbus and cirrus. The thick clouds that are evenly in the western part of the horizon can release light that divides the brightness of the light that covers the hill, making it difficult for the observers to observe its appearance even though the hills are above the horizont.
TM. Ali Muda (w. 2005 M) Karya dan Kontribusinya dalam Bidang Ilmu Falak Arwin Juli Rakhmadi; Mario Kasduri; Muhammad Qorib; Habibullah Ritonga; Robie Fanreza; Abdul Rahman Cemda
Astroislamica: Journal of Islamic Astronomy Vol. 2 No. 2 (2023): 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.v2i2.1930

Abstract

TM. Ali Muda is a North Sumatran astronomy figure who came from Aceh. His work and contribution in the field of astronomy is beyond doubt. His thinking in the matter of determining the beginning of the month is to combine calculations and field observations. However, the tendency of his calculation (hisab) is also quite dominant which is shown by his analysis in various issues of celestial jurisprudence. Meanwhile, in the matter of matlak and Eid al-adha, the hajj-related services whose implementation is only in Mecca, according to him, are obliged to hold on to the matlak of Mecca, while those whose implementation is not only in Mecca are obliged to hold on to their respective matlak
Kajian Ilmu Falak dan Astronomi Dalam Sudut Pandang Filsafat Ilmu Lauhatun Nashiha; Mahsun Mahsun
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.v3i1.2645

Abstract

At first Ilmu Falak was no different from Astronomy. The study of astronomy is as broad as astronomy. However, over time there has been a narrowing of studies in Ilmu Falak. Why is that? Does that make it different from astronomy? This paper will discuss this using a philosophical approach. Data were obtained from various literatures which were then analyzed. This research attempts to study astronomy from a philosophical point of view
Kriteria Baru Mabims 3-6,4: Upaya Penyatuan Kalender Hijriah di Indonesia Dalam Perspektif Maqāṣid Al-Syarī'ah Moh. Fadllur Rohman Karim; Mahsun Mahsun
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.v3i1.2735

Abstract

Minister of Religion Brunei Indonesia Malaysia Singapore which is abbreviated to MABIMS. Several things have been agreed upon by the ministers of religion from the four countries, including the criteria for imkān rukyat. The MABIMS criteria regarding the new moon have undergone several changes. The new MABIMS criteria or MABIMS hilal neo-visibility are a hilal height of 3⁰ and an elongation of 6.4⁰. These new criteria are applied to unite Muslims, especially in Indonesia, in the Hijri calendar. The author understands that there is something interesting about the neo-visibility of the MABIMS hilal in the form of a maqāṣid al-syarī'ah perspective. This study is from a point of view that is still related to fiqh considering the connection between the neo-visibility of the MABIMS new moon in determining rukyatulhilal. The author found that the MABIMS hilal neo-visibility criteria are from the perspective of maqāṣid al-syarī'ah or the objectives of the shari'a. Maqāṣid al-syarī'ah regarding the criteria for the neo-visibility of the new moon MABIMS related to ḥifẓ al-dīn in the categorization of ḥajiyat with consideration of the impact that will occur in efforts to unify the Hijri calendar not to the level of eliminating souls, changing the order of worship itself and destroying natural sustainability, which is more about setting prayer times, not the essence of worship. The government's efforts in adopting these new criteria are none other than an effort to avoid difficulties and difficulties in the context of Muslim harmony and togetherness as well as strengthening the sense of brotherhood.
Pandangan Tokoh Falak tentang Elongasi pada Penentuan Awal Syawal 1443 H dalam Kriteria Neo MABIMS di Indonesia Nur Aini; Youla Afifah Azkarrula
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.v3i1.2762

Abstract

Indonesia implemented the Neo MABIMS criteria for the first time at the beginning of Ramadan and Shawwal 1443 H/2021 AD. However, the application of this new criterion raises an issue of problems in determining the beginning of Shawwal 1443 H. This problem arises in the implementation of the elongation parameter. So there is a confusion that arises for experts and observers of falak in the case of the beginning of the month. This will lead to uncertainty if it is not studied. Therefore, this research was raised using field research and  qualitative approach. Data collection in this study was carried out by interviewing Indonesian Falak figures and some data using documentation. The data obtained were analyzed using descriptive analysis method and triangulation method to obtain valid results. The results of this study indicate that the Neo MABIMS criteria are the result of a new agreement from the renewal of previous criteria with higher parameters. The problem in determining the beginning of Shawwal 1443 H by implementing the Neo MABIMS criteria arises due to the lack of agreement on the use of geocentric or topocentric elongation parameters. In this Shawwal case, the experts decided to use geocentric elongation by considering maslaha (public interest). However, for this case, it was still in an ambiguous state due to there were two paradigms from the Falak figures regarding the implement of elongation, namely geocentric and topocentric.
Verification of Kastner Visibility of Hilal Observation Results at Condrodipo Rukyat Center in 1444 H Nur Faizah; Muhammad Muadz Dzulikrom
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.v3i1.2786

Abstract

The Kastner Hilal visibility method is one of numerous contemporary observation techniques developed with the objective of monitoring the appearance of Hilal with greater precision. This paper presents a discussion of Hilal observations conducted at the Condrodipo Rukyat Center. The visibility results are analyzed using curve graphs, facilitating the assessment and validation of the observations. The findings demonstrate that employing the Kastner mathematical model can corroborate visibility with a substantial degree of concurrence, regardless of atmospheric constraints and sky conditions. However, the results of observer reports in the field are often inconsistent with model predictions, especially in conditions of low Hilal altitude and naked eye observations. Therefore, more rigorous scientific verification and reliable methodologies are needed to confirm observations for the integrity of the determination of the beginning of the lunar month.
Uji Akurasi Hasil Pengukuran Arah Kiblat Pegawai Kemasjidan Kua Menggunakan Aplikasi Google Earth Iyan Hasjun; Andi Jusran Kasim; Nur Astaman Putra
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.v3i1.2796

Abstract

This research aims to analyze the accuracy of qibla direction measurements conducted by mosque employees in the Limboro District, Polewali Mandar Regency, using the Google Earth application. The research method employed is descriptive field research with sociological, normative Islamic, and astronomical approaches. Data was collected through direct measurements by mosque employees using qibla compass tools combined with smartphone compass applications. Subsequently, the qibla direction of mosques and musala was evaluated using the Google Earth application. The research findings indicate that out of 12 mosques and 1 musala sampled, only 3 mosques have accurate qibla directions consistent with the measurements. Meanwhile, the other 9 mosques and 1 musala show significant deviations in qibla direction. These deviations point toward countries such as Yemen, Nigeria, Tanzania, Kenya, and Egypt, with variations ranging from 2° to 27°. The implications of this research can be used to enhance qibla direction measurement methods to align with Islamic Sharia regulations.
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°.
Correlation Between Hilal Age and Altitude at the Beginning of the Lunar Month (A Critique of the Calculation System in Fath ar-Rauf al-Mannan) Rahma; M. Ihtirozun Ni'am
Astroislamica: Journal of Islamic Astronomy Vol. 3 No. 2 (2024): 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.v3i2.3369

Abstract

The hilal altitude formulation in the book Fath ar-Rauf al-Mannan is 0.5 of its age value. However, in the practice of modern theory, the calculation of hilal altitude is not that simple but uses a complex formulation of spherical trigonometry. Therefore, it is necessary to conduct research related to the correlation of hilal age and altitude at the beginning of the lunar month to determine the relationship between the two variables as a criticism of the Fath ar-Rauf al-Mannan hilal altitude formulation. The approach used is quantitative with the type of library research. This research uses data on the new moon at the beginning of the lunar month in 1444 H for twelve months (coordinates 6°59'30" N and 110°20'53" E). The hilal age (x variable) and altitude (y variable) were analyzed using simple regression resulting in a correlation equation y = 0.444103449 x – 0.34109308. The result shows that the hilal altitude formulation in the book Fath ar-Rauf al-Mannan is not representative enough, so it has the potential to cause errors in predicting the hilal position. 
Kajian Penentuan Arah Kiblat Dengan Sensor Magnetik Kompas Android Yusuf Nurqolbi DY; Ulil Albab Al aulia Alpaten; Kurniawan Kurniawan
Astroislamica: Journal of Islamic Astronomy Vol. 3 No. 2 (2024): 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.v3i2.3429

Abstract

The reliability of compass sensors in accurately determining the Qibla direction remains a matter of skepticism. This uncertainty arises mainly from the fact that compass sensors are highly susceptible to interference from the surrounding magnetic field. As a result, the north indicated by these sensors does not correspond to true geographical north; rather it reflects the orientation of the earth's magnetic field. To explore this issue further, a field research methodology was employed, utilizing qualitative data analysis to assess the findings. Based on the measurement results, there was an average difference of 2° 38' 23.53”. Internally, the function of the compass sensor is closely related to the capabilities of the GPS system and the effectiveness of the supporting sensors that work with it. These internal components must function accurately and cohesively to provide precise direction readings. On the other hand, external factors also play an important role in the performance of the compass sensor. According to the majority of scholars, this obligation involves orienting oneself within a certain range of the actual Qibla location. This range is usually defined as being within 45° degrees to the right or left of the actual direction of the Kaaba. If one's orientation exceeds this 45° degree deviation, it is generally considered that one is no longer facing the Qibla correctly.

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