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Ulumuddin : Jurnal Ilmu-ilmu Keislaman
Published by Universitas Cokroaminoto Yogyakarta
ISSN : 19072333     EISSN : 26859211     DOI : -
Core Subject : Humanities, Education, Social,
Humanities Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Social Sciences Other
Jurnal Ulumuddin is a medium of diffusion and exchange of the up to date information on the research findings on Islamic Studies in Indonesian context. It covers various perspectives of humanities and social sciences, with special interest on Islamic education and law of muslim societies as the main focuses and scopes.
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Articles 2 Documents
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Search results for , issue "Vol 5 No 2 (2015): Ulumuddin: Jurnal Ilmu-ilmu Keislaman" : 2 Documents clear
Pandangan Masyarakat Terhadap Arah Kiblat Masjid Besertifikasi Dari Kementrian Agama Zaini Zaini; Istifianah Istifianah; Muthmainnah Muthmainnah
Ulumuddin: Jurnal Ilmu-ilmu Keislaman Vol 5 No 2 (2015): Ulumuddin: Jurnal Ilmu-ilmu Keislaman
Publisher : Universitas Cokroaminoto Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47200/ulumuddin.v5i2.2023

Abstract

Survey needs to be done for identifiying public opinion of the congregation of Masjid Al-Hidayah on the direction of Qiblah and its change. In a qualitative description, the data obtained through observation, documentation and FGD, were elaborated after content analysis. The congregation agreed that Qibla direction on facing the Qiblah to the west in performing prayers at their mosque becomes very important in prayer worship. This understanding is in accord with the MUI fatwa on the direction of Qibla. However, they are not in the same view in the needs of changing the direction of Qibla of the mosque. Therefore, the continuous dissemination of the qiblah understanding to the public is strongly advised, including changes that have no impact on the integrity building of the mosque.
Transformasi Koordinat Bola Langit Ke Dalam Segitiga Bola (Equatorial Dan Ekliptika) Dalam Penentuan Awal Waktu Salat Muthmainnah Muthmainnah
Ulumuddin: Jurnal Ilmu-ilmu Keislaman Vol 5 No 2 (2015): Ulumuddin: Jurnal Ilmu-ilmu Keislaman
Publisher : Universitas Cokroaminoto Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47200/ulumuddin.v5i2.2024

Abstract

There are four coordinate systems to determine the position of celestial bodies, namely: horizon coordinate system, equatorial coordinate system, the clock angle coordinate system and the ecliptic coordinate system. The crucial point to ask is the way to connect between those coordinate systems and how does it work. The way to connect between the coordinate system is called transformation. Celestial coordinate transformation from one coordinate system to another coordinate system can be done by using the spherical triangle formulas or using the rotation matrix. Both ways of coordinate transformation are essentially the same. This paper discusses the celestial coordinate transformation into a spherical triangle for determining the starting time of prayer. The focus of the study is limited and technically directed to dissect the transformation of the ecliptic geocentric (No. 2) to the equatorial geocentric (No. 3) and vice versa. The author concludes that the sky spherical coordinate system is the basis of reference to determine the position of celestial objects. The results of the transformation in the spherical triangle formula obtained sin, cos and tangent. These are actually the three forms of data which are useful to calculate the times on earth, including the time of prayer. Position of a star (in this case the sun) is very important in the beginning of the prayer time calculations because the data required are; the declination calculation, the height of the sun, and the sun angle. Besides, transformation also calculates the ecliptic longitude ecliptic latitude, the longitude of the sun. Position of the sun can also be used to calculate the direction of Qibla, the initial determination moon and eclipse. Thus, this transformation turned out to be a staple in subsequent calculations.

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