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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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ANALISIS KOMPARASI NILAI KONTRAS MICHELSON PADA PENGAMATAN HILAL BERBASIS OPEN COMPUTER VISION Damanhuri, Adi
ELFALAKY: Jurnal Ilmu Falak Vol 7 No 2 (2023): Desember
Publisher : UIN ALAUDDIN MAKASSAR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/ifk.v7i2.42443

Abstract

Observing the crescent moon to determine the beginning of the Hijri month has important notes in the form of the validity of the observation results and contrast problems. The application of astronomical observation technology and instrumentation can help the crescent moon observation process to increase the validity of observation results and increase contrast, including the use of an Open Computer Vision (OpenCV) based observation system. In OpenCV you can run a multiview menu, which displays several image profiles at once even if you only use 1 (one) camera instrument. Various models and observation systems have been widely applied, but it is necessary to quantify them to see the effectiveness of the observation results. Analysis of the effectiveness of observation results can be done by measuring the resulting image contrast value. From 8 data from observations carried out on 19 July 2023 in Sidarjo (7°27'39.2" S 112°39'23.2" E), with Michelson contrast, a very significant increase in the image contrast value was obtained, namely an average of 0, 90, with the lowest increase of 0.86 and the highest contrast increase of 0.92.
Contextualising Fajr Sadiq: Response to Dawn Research Findings with the Sky Quality Meter (SQM) Maskufa, Maskufa; Damanhuri, Adi; Sopa, Sopa; Hadi, Ahmad Chairul
Mazahib Vol 23 No 1 (2024): VOLUME 23, ISSUE 1, 2024
Publisher : Fakultas Syariah UINSI Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21093/mj.v23i1.7293

Abstract

The article needs to address the problem of dawn time too early in Indonesia. To prove this, the researcher used the Sky Quality Meter (SQM) in four locations with different sky brightness levels: Labuan Bajo, Belitung, Sidoarjo, and Bogor. In addition, the article also seeks to explain the views of the government and Islamic organization using SQM. This research uses normative, astronomical, and sociological approaches. The results showed that the value of the sun's tilt during the Dawn Sadiq period was -19.30º to -13.58º. The appearance of dawn can be detected earlier in locations with high sky brightness and low light pollution, such as in Labuan Bajo (-19.30º), while in other places with opposite conditions, the appearance of Dawn Sadiq is slower, such as in Bogor (-13.58º). If the SQM observation in Labuan Bajo is used as a reference, it will not significantly impact the current dawn schedule (dip = -20⁰). The use of SQM for dawn observation is acceptable to the Ministry of Religion and Islamic organizations. However, considering the mixed results of dawn research with SQM, the response of the Ministry of Religious Affairs, Nahdlatul Ulama, and the Islamic Association still uses dip = -20º, while Muhammadiyah shifts to dip = -18⁰. To minimize differences, it is necessary to conduct joint research on an ongoing basis to produce stable data on the setting of the sun at dawn.
Multiview Implementation in Open CV-based Crescent Observation Application Damanhuri, Adi; Samun, Samun; Solikin, Agus
Al-Marshad: Jurnal Astronomi Islam dan Ilmu-Ilmu Berkaitan Vol 9, No 2 (2023): Al-Marshad
Publisher : University of Muhammadiyah Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/jam.v9i2.16201

Abstract

Determining the beginning of the Hijri month is very important for Muslims, especially in Indonesia. One way to determine the beginning of the month is by observing the new moon or moon sighting. In the process of hilal (crescent) sighting, there are theoretically obstacles related to the validity of the sighting results. By implementing an observation system that has the function of displaying and storing observations through a developed application, it is hoped that it can help to increase the validity of the new moon observation. This study answers two problem formulations, specifically: (1) Can an OpenCV-based new moon observation application be built? (2) Can the multiview function be implemented with OpenCV? By using the Phyton programming language, the OpenCV library, and other additional libraries, an OpenCV-based new moon observation application has been successfully created, and at the same time the Multiview function has been implemented. The used application works well, especially the multiview function and the function to save the observations in the specified image format.
Batas Kualitas Langit yang Ideal untuk Lokasi Observasi Awal Waktu Subuh Damanhuri, Adi; Solikin, Agus
Al-Marshad: Jurnal Astronomi Islam dan Ilmu-Ilmu Berkaitan Vol 8, No 1 (2022): Al-Marshad
Publisher : University of Muhammadiyah Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/jam.v8i1.9355

Abstract

This article describes the ideal sky quality limit to be used as an early subuh prayer time observation location, considering that early subuh prayer time research using a Sky Quality Meter (SQM) is mostly carried out from various observation locations with different sky quality. The research method used is quantitative with a sample of 6 observation locations with a daily data amount of 945. The data analysis carried out is to find a correlation between the night level which represents the quality of the sky and the inflection point which represents the sign of the appearance of the early subuh prayer time. Based on the analysis, it is concluded that the ideal sky quality limit to be used as a location for observing early subuh prayer time data using SQM is 20.35 mpsas. This limit is an important consideration for all parties who will conduct observations at early subuh prayer time, must choose locations that have a minimum night level of 20.35 mpsas.
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.
IMPLEMENTASI UJI MANN-WHITNEY DALAM EVALUASI PRESTASI HASIL BELAJAR DALAM KEGIATAN PELATIHAN SAILS-UINSA DI FAKULTAS SYARIAH DAN HUKUM UINSA Damanhuri, Adi; Solikin, Agus
Didaktis: Jurnal Pendidikan dan Ilmu Pengetahuan Vol 23 No 1 (2023)
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/didaktis.v23i1.12571

Abstract

Tujuan penelitian dalam paper ini adalah mengukur prestasi hasil belajar dalam kegiatan pelatihan SAILS-UINSA di Fakultas syariah dan Hukum dengan menggunakan Man-Whitney. Metode penelitian yang digunakan yaitu kuantitatif, dengan pengumpulan data menggunakan angket, data dianalisis secara diskriptif dan menggunakan mann-whitney. Berdasarkan hasil analisis terhadap data yang telah dikumpulkan, diperoleh kesimpulan bahwa pelatihan SAILS-UINSA di Fakultas Syariah dan UINSA secara diskripsi memberikan kenaikan rata-rata hassil prestasi belajar antara sebelum dan sesudah pelatihan yaitu sebesar 1,14, dengan peserta yang mengalami kenaikan prestasi belajar sebesar 57,14%. Namun, jika dianalsiis dengan mann-whitney pelatihan tersebut tidak memberikan kenaikan prestasi belajar.
Hifz Al Aql dan Penerapan Open-Ended Question dalam Materi Konsep Arah Kiblat Pada Mata Kuliah Matematika Astronomi Solikin, Agus; Qulub, Siti Tatmainul; Damanhuri, Adi; Sopwan, Novi; Rohman, Holillur
Edukasi Islami: Jurnal Pendidikan Islam Vol. 12 No. 02 (2023): Edukasi Islami: Jurnal Pendidikan Islam
Publisher : Sekolah Tinggi Agama Islam Al Hidayah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30868/ei.v12i02.3243

Abstract

Artikel ini bertujuan mendeskripsikan langkah-langkah penerapan pendekatan open ended question pada materi konsep arah kiblat di mata kuliah matematika astronomi dalam rangka menjaga semangat hifz al aql. Artikel ini merupakan hasil penelitian lapangan di prodi Ilmu Falak Fakultas Syariah Dan Hukum UIN Sunan Ampel Surabaya Semester Gasal Tahun Akademik 2022/2023. Langkah - langkah  penerapan pendekatan pada kajian ini terbagi menjadi tiga tahap, yaitu tahap pertama persiapan yang meliputi penyusunan lembar kerja mahasiswa yang memuat masalah tentang konsep arah kiblat dengan pendekatan open ended question. Tahap kedua pelaksanaan, dimulai dengan dosen pengampu menyampaikan motivasi, tujuan perkuliahan dan metode perkuliahan yang dilakukan. Kemudian dilanjutkan mahasiswa membentuk kelompok, bersama kelompoknya mahasiswa mendiskusikan penyelesaian masalah yang ada dalam lembar kerja mahasiswa, kemudian dilanjutkan dengan satu atau beberapa kelompok mewakili satu kelas untuk mempresentasikan hasil kinerjanya, sedangkan kelompok yang lain diminta untuk memberi tanggapan. Tahap kedua ini ditutup dengan kegiatan mahasiswa secara bersama-sama dengan dosen pengampu, membuat refleksi dan kesimpulan atas solusi penyelesaian masalah tersebut. Tahap ketiga yaitu evaluasi, pada tahap ini dosen melakukan penilaian terhadap hasil perkuliahan,
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