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All Journal Jurnal Riset dan Kajian Pendidikan Fisika YUDISIA : Jurnal Pemikiran Hukum dan Hukum Islam JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) SPEKTRA: Jurnal Kajian Pendidikan Sains Jurnal Environmental Science MUST: Journal of Mathematics Education, Science and Technology Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) Jurnal SOLMA ORBITA: Jurnal Pendidikan dan Ilmu Fisika Jurnal Dinamika Sosial Budaya Al-Hikmah: Jurnal Agama dan Ilmu Pengetahuan Journal of Islam and Science Jurnal Ilmu Pemerintahan, Administrasi Publik, dan Ilmu Komunikasi (JIPIKOM) ELFALAKY: Jurnal Ilmu Falak Proceeding International Seminar of Islamic Studies Al-Hilal: Journal of Islamic Astronomy Al-Afaq: Jurnal Ilmu Falak dan Astronomi DIKTUM: JURNAL SYARIAH DAN HUKUM Astroislamica: Journal of Islamic Astronomy Jurnal Ilmu dan Inovasi Fisika Wahana Fisika : Jurnal Fisika dan Terapannya Al-Ahkam: Jurnal Ilmu Syari'ah dan Hukum JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah)

Hariyadi Putraga

Universitas Muhammadiyah Sumatera Utara

Author-ID : 2478333

Religion Arts Humanities Astronomy Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Uji Akurasi Perhitungan Waktu Ashar menggunakan Rubu’ Al-Mujayyab Muhammad Hidayat; Arwin Juli Rakhmadi; Hariyadi Putraga
DIKTUM: Jurnal Syariah dan Hukum Vol 20 No 1 (2022): DIKTUM: Jurnal Syariah dan Hukum
Publisher : Fakultas Syariah dan Hukum Islam Institut Agama Islam Negeri (IAIN) Parepare

The study aims to measure the calculation of time using Rubu Al-Mujayyab, in addition to explaining in detail the steps on calculating time of Ashr using Rubu' Al-Mujayyab. The research method used in this research is experimental. The results of this study indicates that Rubu Al-Mujayyab has a fairly high time calculation accuracy, especially in calculating of the Ashr time. It is evident that there is no difference in the results of time calculations using Rubu' Al-Mujayyab by applying the Contemporary Hisab Method and Accurate Times Software. In addition, Rubu Al-Mujayyab can determine the declination of the Sun and there are other functions of the Asr line that can make it easier for users to determine after the beginning of time until the length of the shadow of an object is doubled or the beginning of time.

ZIJ ULUGH BEK AND HIS INFLUENCE ON ISLAMIC ASTRONOMY DEVELOPMENT IN NUSANTARA Arwin Juli Rakhmadi; Hariyadi Putraga; Nor Azam bin Mat Noor
Proceeding International Seminar of Islamic Studies INSIS 5 (March 2023)
Publisher : Proceeding International Seminar of Islamic Studies

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Ulugh Bek (d. 853 H/1449 AD) was a Muslim scientist who mastered mathematics and astronomy, he also served as director of the Samarkand Observatory. One of his works in astronomy is “Zij Ulugh Bek” also known as “Zij al-Sulthany”. This zij contains data or astronomical tables of celestial bodies which include studies of hisab and calendar, the celestial bodies' area, planets, and the star's position. In its development, this work significantly influences the Islamic science idea and development in Nusantara, where the Islamic science books written by Islamic science national figures refer to and quote this zij a lot. Genealogically, Ulugh Bek’s Zij is one of the main sources of Islamic science studies development in Nusantara, while the astronomical data contained in this book is fairly accurate so it is still suitable to use at present.

Penentuan Awal Waktu Subuh Menggunakan Kamera DSLR dan Metode Moving Average Hariyadi Putraga; Arwin Juli Rakhmadi; Muhammad Dimas Firdaus; Muhammad Hidayat
JIIF (Jurnal Ilmu dan Inovasi Fisika) Vol 6, No 2 (2022)
Publisher : Universitas Padjadjaran

Keberadaan Teknologi terutama optik dan digital yang dapat digunakan dengan pengaturan serupa dimanapun agar dapat dilaksanakan siapa saja dapat menjadi standar baru untuk penentuan dan tampilan visual awal waktu subuh yang terlihat di lapangan. Kamera Digital yang dapat diambil dengan berkala sehingga dapat menghasilkan deretan gambar sesuai waktu dan menujukan perbedaan langit saat transisi waktu subuh menjadi salah satu pilihan dan alat pembuktian awal waktu subuh di dunia.Hasil dari penelitian ini menunjukkan terdapat perbedaan awal waktu subuh menurut Kemenag dengan hasil olahan citra menggunakan metode moving average. Hasil olahan citra tersebut berhasil menunjukkan awal perubahan langit pada waktu subuh dengan terlihatnya perubahan nilai pixel yang signifikan. Dari penelitian ini ditemukan hasil awal waktu subuh pada tanggal pengamatan berada pada saat matahari pada dip -17° 07' 12".

Pengaruh Emisi Cahaya dari Data VIIRS Day/Night Band pada Kecerlangan Langit Malam di Observatorium Ilmu Falak Universitas Muhammadiyah Sumatera Utara (OIF UMSU) Arwin Juli Rakhmadi; Ajraini Nazli; Hariyadi Putraga; Muhammad Hidayat
Wahana Fisika Vol 8, No 1 (2023): June
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/wafi.v8i1.42451

Sebagai tempat pengamatan astronomi, Observatorium Ilmu Falak Universitas Muhammadiyah Sumatera Utara (OIF UMSU) membutuhkan kualitas langit malam yang bebas dari polusi cahaya. Atas dasar hal tersebut, penelitian ini melakukan analisa pengaruh polusi cahaya pada kualitas langit astronomis di OIF UMSU (3°34’56’’ LU dan 98°43’18’’ BT). Pengamatan kualitas langit malam dilakukan oleh OIF UMSU dari Februari 2018-Maret 2020 dengan Sky Quality Meter (SQM) fotometer pada arah zenit. Dari 588 hari pengamatan, Kami memperoleh rata-rata kecerlangan langit malam dan kecerlangan langit malam maksimum adalah 16,73 mpdbp dan 18,43 mpdbp. Nilai tersebut memberikan batas magnitudo pengamatan mata telanjang (NELM) masing-masing sebesar 2,86 dan 4,32. Untuk meninjau kontribusi cahaya artifisial pada kualitas langit malam di OIF UMSU, kami meninjau emisi cahaya malam hari dari pengamatan satelit Suomi National Polar-Orbiting Partnership (S-NPP) dengan sensor Visible Infrared Imaging Radiometer Suite (VIIRS) dalam rentang tahun 2018-2020. Emisi cahaya malam hari di Kota Medan menunjukkan peningkatan sebesar 5,51-5,93%/tahun. Hubungan antara kecerlangan langit malam yang menggunakan SQM dan data VIIRS memiliki korelasi lemah dengan R2 = 0.03. Berbagai faktor mempengaruhi lemahnya korelasi tersebut, antara lain nilai kecerlangan langit malam yang dipengaruhi faktor cuaca dan cahaya bulan serta pengamatan kecerlangan langit malam yang hanya berada di satu titik lokasi. Kata kunci: polusi cahaya,kecerlangan langit malam, Sky Quality Meter, VIIRS Day/Night band

THE DETERMINATION OF DAWN TIME IN MEDAN USING SQM WITH RASPBERRY PI BASED Putraga, Hariyadi; Rakhmadi, Arwin Juli; Hidayat, Muhammad; Firdaus, Muhammad Dimas
Proceeding International Seminar of Islamic Studies INSIS 5 (March 2023)
Publisher : Proceeding International Seminar of Islamic Studies

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The beginning of dawn prayer is still a hot debate among Falak practitioners and astronomers in Indonesia. The Adzan marks the start of dawn prayer time were too fast because the sky is still dark and not as mentioned in the Hadith, which is when the sky gets brighter. This study aims to prove the change from the night sky to the bright sky using a photometer called SQM with a recording device based on Raspberry Pi so that it can be used easily, quickly, lightly, and also safe to be left in a location during the data collection process. The results obtained in this study show that SQM on Raspberry can function properly, the dawn time at SQM readings using Raspberry Pi shows that the Sun is in the dip range of 15-18 degrees below the horizon when the sky changes brighter occurred

STUDY OF HILAL’S CONTRAST USING INFRARED FILTER IN DAYLIGHT HILAL OBSERVATION Firdaus, Muhammad Dimas; Rakhmadi, Arwin Juli; Hidayat, Muhammad; Putraga, Hariyadi
Proceeding International Seminar of Islamic Studies INSIS 5 (March 2023)
Publisher : Proceeding International Seminar of Islamic Studies

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Hilal observation has already undergone a very significant development of techniques. From daytime observations, up to the uses of various instruments that can support the success of observations. One of the routine activities carried out by the Falak Science Observatory of Muhammadiyah University of North Sumatra is daytime hilal observation. The hilal observation conducted by OIF UMSU uses an infrared filter instrument that can transmit light at infrared wavelengths and filter light at other wavelengths. This research tries to compare the contrast of daylight hilal images taken using filters and not using filters.The results obtained from the experiments carried out resulted in a contrast value using an infrared filter is 129% using Weber contrast analysis, and 4% using Michelson contrast analysis.

Transformasi Hisab-Rukyat Dalam Penentuan Awal Bulan Hijriah di Muhammadiyah Ritonga, Marataon; Rakhmadi, Arwin Juli; Hidayat, Muhammad; Putraga, Hariyadi
Al-Hikmah: Jurnal Agama dan Ilmu Pengetahuan Vol. 21 No. 1 (2024): Al-Hikmah: Jurnal Agama dan Ilmu Pengetahuan (AJAIP)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/al-hikmah:jaip.2024.vol21(1).14676

Muhammadiyah as a tajdid (renewal) movement will continue to improve the system in determining the beginning of hijri month through studies, discussions seminars, and research so that the methods and criteria used are truly following the Qur’an, hadith and the Muslims needs in the world. This research purpose to analyze, explore, and discover the transformation and changes in methods made by Muhammadiyah to determine the new month. The research method in this study is a literature study, by conducting a study and book analysis, journals, Suara Muhammadiyah magazines, and related references that have a close relationship with the studies. Based on the study, it shows that Muhammadiyah has made several transformations in its ijtihad to determine the beginning of the new hijri month, starting from the hisab imkanur rukyat sytem, then replaced with the hisab ijtima’ qabl al-ghurub, and the last one was perfected with the hisab wujudul hilal.

Effectiveness Test of iOptron Cube-G Telescope for Hilal Observation Firdaus, Muhammad Dimas; Putraga, Hariyadi; Butar-Butar, Arwin Juli Rakhmadi; Hidayat, Muhammad
AL - AFAQ : Jurnal Ilmu Falak dan Astronomi Vol. 4 No. 2 (2022): Desember 2022
Publisher : Universitas Islam Negeri Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/afaq.v4i2.5341

The use of robotic telescopes in the practice of observing the Hilal in Indonesia is quite widespread. One type of telescope that is widely used by observers is the iOptron Cube. Telescopes with an alt-azimuth mounting type with GPS features can be used easily by observers who observes Hilal on a portable basis. The effectiveness of using this telescope needs to be studied more deeply because pointing accuracy and alt-azimuth tracking mounting capabilities require good computational ability to obtain the expected results. After being tested with two configurations (narrow and wide field of view) and seeing the various supporting features embedded in this telescope, it can be concluded that the iOptron Cube is quite effective for observing Hilal.

Analisis Peningkatan Polusi Cahaya Berdasarkan Pembacaan SQM dan Citra Satelit VIIRS tahun 2017 – 2022 di Kota Medan Putraga, Hariyadi; Raisal, Abu Yazid; Firdaus, Muhammad Dimas; Rakhmadi, Arwin Juli
AL - AFAQ : Jurnal Ilmu Falak dan Astronomi Vol. 5 No. 1 (2023): Juni 2023
Publisher : Universitas Islam Negeri Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/afaq.v5i1.7250

An analysis of light pollution has been carried out based on the reading of a photometercalled Sky Quality Meter (SQM) which shows the level of light pollution expressed in the MPASSreference. This study aims to determine the increase in light pollution in the city of Medan and to findout the implications for astronomical observations there. Light pollution distribution maps data andradiance quantity data are obtained through a platform that presents light pollution mapping and isfurther analyzed with literacy studies. Its Found that the radiance value is proportional to the level ofpollution and is influenced by the population of civilization in Medan from 2017 to 2022 soastronomical observations and phenomena are also decreasing to be visible.

Upaya memasyarakatkan astronomi melalui OIF Goes To School di Sekolah MIN 12 Medan Putraga, Hariyadi; Panjaitan, Nur Nilam Sary; Nasution, Makromatul afifah; Ritonga, Marataon; Rakhmadi, Arwin Juli
Jurnal Dinamika Sosial Budaya Vol. 26 No. 1 (2024): Juni (2024)
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/jdsb.v26i1.8832

Astronomi lahir dari kebutuhan masyarakat dalam pencarian penanda waktu dan arah. Namun, masyarakat sendiri belum banyak yang mengenal fenomena astronomi dan cenderung lupa bahkan tidak mengetahui tentang fenomena tersebut. Upaya mengenalkan astronomi kepada masyarakat merupakan salah satu solusi yang dilakukan oleh peneliti yang bekerjasama dengan OIF UMSU masih sebatas di sekolah dilakukan dengan memanfaatkan Program OIF Goes to School di Kota Medan. Program yang dilakukan adalah Sosialisasi dan mengedukasi masyarakat tentang fenomena astronomi, pengamatan matahari dengan teleskop dan kacamata matahari, serta instrumen Astronomi lainnya yang dibawa saat kegiatan berlangsung. Dari program yang dilakukan, masyarakat memberi respon melalui kuisioner dengan skala likert. Respon masyarakat sangat baik, dengan nilai rata-rata sebesar 3,71. Sebanyak 96% responden menyatakan perlu selalu diadakan kegiatan ini kembali.

Co-Authors Abu Yazid Raisal Ahmad Abdulwfa Ajraini Nazli Ajraini Nazli Andika, Muhammad Sadam Arwin Juli Rakhmadi Firdaus, Muhammad Dimas Hasrian Rudi Setiawan Hidayat, Muhammad Ismail Ismail Isra Hayati Leo Hermawan Marataon Ritonga Muhammad Dimas Firdaus Muhammad Dimas Firdaus Muhammad Hidayat Muhammad Qorib Nasution, Makromatul afifah Nor Azam bin Mat Noor Panjaitan, Nur Nilam Sary Riskiyan Hadi Rizkiyan Hadi Ruslandi Ruslandi Sinaga, Roynanda Thariq, Muhammad

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