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All Journal Ahkam: Jurnal Ilmu Syariah Prosiding Semnastek Jurnal Matematika: MANTIK Didaktis: Jurnal Pendidikan dan Ilmu Pengetahuan MUST: Journal of Mathematics Education, Science and Technology Al-MARSHAD: Jurnal Astronomi Islam dan Ilmu-Ilmu Berkaitan Edukasi Islami: Jurnal Pendidikan Islam ELFALAKY: Jurnal Ilmu Falak Ma'mal: Jurnal Laboratorium Syariah dan Hukum Mazahib: Jurnal Pemikiran Hukum Islam Azimuth: Journal of Islamic Astronomy
Adi Damanhuri, Adi
Program Studi Ilmu Falak Fakultas Syariah Dan Hukum Universitas Islam Negeri Sunan Ampel Surabaya
Religion Astronomy Computer Science & IT Earth & Planetary Sciences Education Law, Crime, Criminology & Criminal Justice Mathematics Social Sciences

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Journal : Azimuth: Journal of Islamic Astronomy

 1 
Determining Subuh Prayer Time Using GNU Octave To Find Polynomial Roots Damanhuri, Adi; Maskufa; Hadi, Chairul
Azimuth: Journal of Islamic Astronomy Vol. 3 No. 1 (2022): Januari
Publisher : Program Studi Ilmu Falak UIN Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15642/azimuth.v3i1.1055

Abstract

The standard used for the dawn prayer time schedule by the Indonesian government is the sun elevation angle 20°. That standard has been corrected a lot because it has not been assumed too late. Early research at dawn is mostly done using simple photometry tools, namely SQM, the processing of SQM output data varies, one of which is by polynomials, by reducing its function to the second derivative, and the first derivative root is substituted into the second derivative, so the turning point solution is represented by ?2y/?2t <0. The GNU Octave application helps to find the root of the first derivative easier and simpler by writing commands so that the root of the first derivative is obtained. With the polynomial method using GNU Octave, analyzing 19 observational data shows that the lowest elevation angle is -21.53 °, which means 1.53 ° faster, or 6 minutes 7.2 seconds from the official schedule, and the highest elevation angle is -11.38 ° or 34 minutes 28.8 seconds slower. On an average the elevation of the Sun angle is -16.59 ° ± 2.82 ° with difference of 3.41 ° or 13 minutes 38.4 seconds from the official schedule.
Studi Analisis Penentuan Arah Kiblat Di Masjid Jami’ Manyar Gresik Musaffa, Akhmad Fikril; Cahyono, Slamet Nur; Insani, Eliyah Mulyasa; Adji, Gilang Bagas Putra; Syaifuddin, Muhammad; Damanhuri, Adi
Azimuth: Journal of Islamic Astronomy Vol. 2 No. 1 (2021): Januari
Publisher : Program Studi Ilmu Falak UIN Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15642/azimuth.v2i1.2224

Abstract

Kiblat merupakan tempat titik berpusat umat islam diseluruh dunia sebagai tempat beribadah kepada allah. Bengunan tersebut merupakan bagunan suci yang letaknya dikota makkah. Dalam penentan arah kiblat terdapat dua macam yaitu: (1) memanfaatkan baying-bayang kiblat, dan (2) memanfaatkan utara sejati. Sedangkan apabila penentuan kiblat menggunakan bayang-banyang diantaranya, (3) menghitung arah kiblat suatu tempat, (b) menghitung saat kapan matahari membuat bayang-bayang setiap benda tegak mengarah persis ke ka’bah, (c) mengamati bayang-bayang benda terhadap benda tegak, (d) menfoto atau mendataan bayang-bayang tersebut. dalam penelitian ini penulis meneliti arah kiblat masjid jami’ manyar.
Analisis Orthodrom Dan Loxodrom Dalam Penentuan Arah Kiblat di Tokyo Jepang Husna, Amirah Himayah; Hamdani, Aristiono; Nikmah, Ckamilatun; Ardiansyah, Givari; Saifullah, Mohammad Sultan Yusuf; Damanhuri, Adi
Azimuth: Journal of Islamic Astronomy Vol. 2 No. 2 (2021): Juli
Publisher : Program Studi Ilmu Falak UIN Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15642/azimuth.v2i2.2225

Abstract

Ilmu falak berperan penting dalam kehidupan umat muslim, khususnya dalam hal peribadatan. Banyak sekali jenis peribadatan yang berkaitan dengan ilmu falak, seperti penentuan awal waktu shalat, penentuan awal bulan qamariyah, dan penentuan arah kiblat. Dalam ibadah shalat, selain penentuan awal waktu shalat, terdapat hal lain yang krusial yakni penentuan arah kiblat. Hal ini dikarenakan menurut jumhur ulama, menghadap kiblat termasuk dalam syarat sahnya shalat. Banyak pendapat mengenai arah kiblat dalam shalat, ada yang menyebutkan menghadap persis ke ka’bah dan menghadap ke arah ka’bah. Pendapat mengenai kiblat sekedar menghadap ke arah ka’bah banyak digunakan oleh negara-negara yang berada jauh dari ka’bah, hal ini dikarenakan sepanjang mata memandang tidak akan bisa melihat ka’bah. Maka dari itu, digunakanlah alat-alat pengukur arah kiblat untuk mengetahuinya. Terlebih lagi pada masa sekarang yang sudah maju, teknologi untuk mencari arah kiblat pun jadi semakin canggih. Dengan begitu, dimanapun tempat kita berada di seluruh penjuru dunia ini, kita dapat mengetahui arah kiblat menggunakan alat-alat yang sudah ada. Termasuk mengetahui arah kiblat di Tokyo jepang dengan menggunakan arah orthodrom dan loxodrom yang akan dibahas di dalam artikel ini. Kata kunci: ilmu falak, arah kiblat, orthodrom, loxodrom.   Abstract:    Falak science plays an important role in the life of Muslims, especially in terms of worship. There are many types of worship related to phallic science, such as determining the beginning of prayer time, determining the beginning of the qamariyah month, and determining the direction of qibla. In prayer services, in addition to determining the beginning of the prayer time, there is another crucial thing, namely, determining the direction of the Qibla. This is because, according to jumhur ulama, facing the Qibla is included in the legal conditions of prayer. There are many opinions regarding the direction of the Qibla in prayer; some mention facing exactly towards the kaaba, and others mention facing towards the kaaba. The opinion that the qibla is just facing towards the kaaba is widely used by countries that are far from the kaaba; this is because, as long as the eye can see, it will not be able to see the kaaba. Therefore, qibla direction measuring devices are used to find out. Moreover, in today's advanced days, technology to find the direction of the Qibla has become more sophisticated. That way, wherever we are in all corners of the world, we can know the direction of the Qibla using existing tools. This will include knowing the direction of the Qibla in Tokyo, Japan, by using the orthodrom and loxodrom directions, which will be discussed in this article. Keywords: falak science, qibla direction, orthodrom, loxodrom.  
Konsep dan Aplikasi Rumus Sudut Bantu Segitiga Bola dalam Penentuan Arah Kiblat Solikin, Agus; Damanhuri, Adi
Azimuth: Journal of Islamic Astronomy Vol. 5 No. 1 (2024): Januari
Publisher : Program Studi Ilmu Falak UIN Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15642/azimuth.v5i1.2228

Abstract

Abstrak: Penelitian ini membahas aplikasi rumus sudut bantu dalam segitiga bola untuk menghitung arah kiblat umat Islam. Segitiga Bola adalah segitiga yang memiliki tiga sisi dan tiga sudut, dengan setiap sisi merupakan lingkaran besar dalam bola dan setiap sudut yang ada dalam segitiga bola terbentuk dari perpotongan dua buah lingkaran besar. Selaras dengan hal itu, dalam segitiga bola dikenal pula dengan aturan cosinus dan sinus seperti segitiga bangun datar. Berangkat dari segitiga bola dan aturan cosinus serta sinus maka dapat dibuat sebuah sudut bantu yang dapat berfungsi untuk menentukan sudut atau sisi dari segitiga bola yang belum diketahui. Berdasarkan hal tersebut, maka rumusan masalah dalam makalah ini yaitu tentang aplikasi rumus sudut bantu dalam perhitungan arah kiblat, dengan metode deskriptif kualitatif dan pendekatan grounded theory, data dikumpulkan melalui studi Pustaka. Data dikumpulkan dengan cara penelaahan dokumen-dokumen tersebut, selanjutnya data yang terkumpul dianalisis dengan cara deskriptif analitis induktif yang menggunakan pendekatan grounded theory. Sedangkan untuk mengetahui hasil perhitungan arah kiblat digunakan kalkulator casio fx-350MS. Berdasarkan penelitian yang telah dilakukan dapat diambil kesimpulan bahwa rumus sudut bantu segitiga bola memiliki akar rumus perhitungan dari aturan cosinus dan sinus dalam segitiga bola, dan jika diaplikasikan dalam perhitungan arah salat umat Islam maka akan memiliki bentuk rumus yang lain. Hasil menunjukkan bahwa rumus sudut bantu yang diturunkan dari aturan kosinus dan sinus segitiga bola dapat digunakan untuk menentukan arah kiblat secara akurat dengan bantuan kalkulator ilmiah.Kata Kunci: Segitiga bola, Rumus Sudut Bantu, Perhitungan Arah Kiblat, Umat Islam. Abstract: This study discusses the application of the auxiliary angle formula in a spherical triangle to calculate the direction of the qibla of Muslims. A ball triangle is a triangle that has three sides and three corners, with each side being a large circle in a sphere and each corner in a spherical triangle formed from the intersection of two large circles. In line with that, in a spherical triangle it is also known as the cosine and sine rules like a flat building triangle. Departing from the spherical triangle and the rules of cosine and sine can be made an auxiliary angle that can function to determine the angle or side of an unknown spherical triangle. Based on this, the formulation of the problem in this paper is about the application of the auxiliary angle formula in the calculation of the direction of the qibla, with a qualitative descriptive method and a grounded theory approach, data is collected through a literature study. Data is collected by studying these documents, then the collected data is analyzed in an inductive analytical descriptive way using a grounded theory approach. Meanwhile, to find out the results of the calculation of the Qibla direction, a Casio FX-350MS calculator was used. Based on the research that has been carried out, it can be concluded that the formula for the auxiliary angle of the spherical triangle has the root of the calculation formula of the rules of cosine and sine in a spherical triangle, and if it is applied in the calculation of the direction of prayer of Muslims, it will have another form of formula. The results show that the auxiliary angle formula derived from the cosine and sine rules of the spherical triangle can be used to accurately determine the direction of the qibla with the help of scientific calculators.Keywords: Ball triangle, Auxiliary Angle Formula, Qibla Direction Calculation, Muslims.
Co-Authors Achmad Nurfathoni Arifudin Adji, Gilang Bagas Putra Agus Solikin Agus, Agus Solikin Ahmad Chairul Hadi, Ahmad Chairul Akhmad Mukarram Ardiansyah, Givari Cahyono, Slamet Nur Hadi, Chairul Hamdani, Aristiono Holillur Rohman Husna, Amirah Himayah Insani, Eliyah Mulyasa Maskufa Maskufa Maskufa Maskufa Maskufa Mochammad Zidni Ilman Nafiah Say'ri Muhammad Syaifuddin Musaffa, Akhmad Fikril Nikmah, Ckamilatun Novi Sopwan Rohman, Holillur Saifullah, Mohammad Sultan Yusuf Samun, Samun Siti Tatmainul Qulub Sopa & Siti Rahmah Sri Hidayati