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All Journal Jurnal Riset dan Kajian Pendidikan Fisika YUDISIA : Jurnal Pemikiran Hukum dan Hukum Islam Al-Ahkam: Jurnal Ilmu Syari'ah dan Hukum 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 Journal of Islam and Science ELFALAKY: Jurnal Ilmu Falak Proceeding International Seminar of Islamic Studies 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

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 Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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

Studi Konstelasi Peradaban Arab dari Kitab Suwar Al-Kawakib Al-Thabita Menggunakan Software Stellarium Hariyadi Putraga; Arwin Juli Rakhmadi; Muhammad Hidayat; Muhammad Dimas Firdaus
YUDISIA : Jurnal Pemikiran Hukum dan Hukum Islam Vol 13, No 2 (2022): YUDISIA: Jurnal Pemikiran Hukum dan Hukum Islam
Publisher : Program Studi Hukum Keluarga Islam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21043/yudisia.v13i2.16965

Constellations originating from Arab civilization are still very little known and studied. Kitab Al-Kawakibal-Thabitahal-Sufi contains stars that include star coordinates and approximate magnitudes, as well as star details with their graphs. This study aims to examine the differences in the number of stars in the constellation samples, compare the visual appearance of the illustrations on the Stellarium software and study the differences in the shapes of the western constellations and the Arab constellations. This research is a literature study by analyzing data on the number of stars, their position, and presentation of the constellations written by al-Sufi in his work Al-Kawakib Al-Thabita SuwarThe number of stars in the sample constellations, the difference in illustration comes from the orientalization of the figures and at first glance, the magnitudes of the stars in al-Ṣūfi's works are similar to those of Ptolemy's. Al-Sufi identified a total of 134 additional stars, 65 stars located in the North constellation, 41 stars in the Zodiac constellation, and 28 stars in the Southern constellation. His observations show that the magnitude values of 520 stars out of a total of 1022 stars are identical between al-Sufi and Ptolemy. Stellarium provides an excellent visual presentation of the depiction of constellations in Arab civilization according to the book by al-Sufi.Konstelasi yang berasal dari peradaban Arab masih sedikit sekali dikenal dan dipelajari. Kitab al-Kawakib al-Thabitah karya Al-Ṣūfi berisi bintang yang mencantumkan koordinat bintang dan perkiraan magnitudo, serta detail bintang dengan grafiknya. Penelitian ini bertujuanuntuk mengkaji perbedaan jumlah bintang pada sampel konstelasi, membandingkan tampilan visual ilustrasinya pada software Stellarium dan mempelajari perbedaan bentuk konstelasi barat dan konstelasi Arab. Penelitian ini merupakan kajian Pustaka dengan melakukan analisis data jumlah bintang, posisi dan penyajian rasi bintang yang dituliskan oleh al-sufi dalam karyanya Suwar Al-Kawakib Al-Thabita. Hasil penelitian menunjukkan perbedaan antara konstelasi dari buku Almagest dan kitab al-Kawakibal-Thabitah berupa perbedaan jumlah bintang pada konstelasi sampel, perbedaan ilustrasi berasal dari orientalisasi figur dan Sepintas besar magnitude bintang-bintang pada karya al-Ṣufi mirip dengan karya Ptolemy. Al-Sufi mengidentifikasi secara total jumlah 134 bintang tambahan, 65 bintang terletak di rasi bintang Utara, 41 bintang in rasi bintang Zodiac dan 28 bintang di rasi bintang Selatan. Pengamatannya menunjukkan bahwa nilai magnitudo 520 bintang dari total 1022 bintang yang identik antara Al-Sufi dan Ptolemy. Stellarium memberikan sajian visual yang sangat baik terhadap penggambaran konstelasi pada peradaban Arab menurut kitab karya Al-Sufi.

THE STUDY OF ARABIC CONSTELLATION FROM THE BOOK SUWAR AL-KAWAKIB AL-THABITA USING STELLARIUM SOFTWARE Hariyadi Putraga; Arwin Juli Rakhmadi Butar-Butar; Muhammad Hidayat; Muhammad Dimas Firdaus
Journal of Islam and Science Vol 9 No 2 (2022): July-December
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jis.v9i2.31526

The constellations originating from Arab civilization were still very little known and studied. Al-Ṣūfi's book, al-Kawākib al-Thābitah, contains the record of coordinates, approximate magnitudes, and star details with graphs. This study examines the difference of stars in the sample constellation, compares the visual appearance of the illustrations on the Stellarium software, and studies the differences between the western constellations and the Arabic constellations. The result shows some differences between the constellations of the almagest and al-Kawākib al-Thābitah in the number of stars in the sample constellations, differences in illustrations from the orientalized figures, and the star magnitude in al-Ṣūfi's work that similar to Ptolemy's works. Al-Sufi identified a total of 134 additional stars, 65 stars located in the Northern constellations, 41 stars in the Zodiac constellation, and 28 stars in the Southern constellations. His observations showed that the magnitude values of 520 stars out of a total of 1022 stars were identical between al-Sufi and Ptolemy. Stellarium provides an excellent visual presentation of the Arabic constellations according to Al-Sufi's book that shows position, illustration, and mapping in the night sky.

ANALISIS PENGARUH APHELION DAN PERIHELION TERHADAP SUHU MENGGUNAKAN WEATHER STATION Abu Yazid Raisal; Hariyadi Putraga; Muhammad Hidayat; Arwin Juli Rakhmadi
Jurnal Environmental Science Vol 3, No 2 (2021): April
Publisher : UNIVERSITAS NEGERI MAKASSAR

Matahari merupakan sumber energi utama bagi kehidupan di Bumi. Perubahan aktifitas Matahari jangka panjang memegang peranan penting dalam perubahan iklim global. Perubahan iklim tersebut menyebabkan naik turunnya suhu di permukaan bumi. Pancaran cahaya Matahari tersebut membawa energi bahkan radiasi. Total radiasi yang diterima dipermukaan bumi dipengaruhi oleh jarak Matahari, intensitas radiasi Matahari, panjang hari. Jarak Matahari selalu berubah sepanjang tahun dikarenakan orbit Bumi mengelilingi Matahari berbentuk elips. Saat Bumi berada pada jarak terdekat dengan Matahari disebut perihelion. Saat Bumi berada pada jarak terjauh dari Matahari disebut aphelion. Penelitian ini bertujuan untuk mengetahui pengaruh aphelion dan perihelion terhadap suhu di kota Medan menggunakan weather station. Aphelion dan perihelion tidak memiliki dampak yang signifikan terhadap suhu Bumi. Ketika jarak Bumi paling dekat dengan Matahari (perihelion), suhu Bumi justru lebih rendah dibandingkan dengan saat jarak Bumi paling jauh dengan Matahari. Suhu Bumi sedikit lebih tinggi pada bulan Juli dikarenakan bagian utara planet Bumi yang padat akan daratan lebih condong ke arah Matahari, dimana daratan lebih cepat panas dibandingkan dengan lautan. Selain itu suhu di permukaan Bumi juga dipengaruhi oleh pola angin.

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.

Pengamatan Hilal Siang Hari di OIF Cabang Barus Muhammad Dimas Firdaus; Hariyadi Putraga; Muhammad Hidayat; Arwin Juli Rakhmadi
Astroislamica: Journal of Islamic Astronomy Vol. 1 No. 2 (2022): Astroislamica: Journal of Islamic Astronomy (Desember)
Publisher : Islamic Astronomy Department, Sharia and Law Faculty

Crescent observation as one of the practices carried out within the scope of falak science has an escalation in methods to adapt the development of science and technology. The development of crescent observation method has an impact on the observation time. In the past, observing crescent only focused when the sun had set, but now observing crescent can be done since the sun is still above the horizon. OIF UMSU as an institution engaged in the field of falak science also conducts crescent observations every month from noon. On November 25, 2022, OIF Barus Team managed to capture the new moon crescent at noon at 13:49 WIB with an elongation of 18°25'. This observation could maximizing existing instruments to obtain crescent images with smaller elongation.

Pengukuran Kecerahan Langit Malam dan Polusi Cahaya di Provinsi Sumatera Utara Hariyadi Putraga; Arwin Juli Rakhmadi; Muhammad Dimas Firdaus; Muhammad Hidayat
Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) 2022: Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) 2022
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/prosidingsnfa.v7i0.71953

Abstract: The astronomical phenomenon that occurs at a certain time and duration becomes objects for study and research. However, not every location provides the astronomical phenomenon visibility that observers want. To achieve the best data, the best observer position is also needed. During the author’s experience pursuing astronomical phenomena around North Sumatra, only a few places provide good visibility. This is related to the night sky brightness level and light pollution of the location. The night sky brightness is a variable that needed to be included to determine the location used for astronomical observation points so the observers could get the best results. The measurement was taken using a photometer named Sky Quality Meter in several locations around North Sumatra to find the best sky brightness data value reading. From the measurements, the maximum reading results for the East coast of North Sumatra is 19.39 MPSAS, for mid-North Sumatra 20.92 MPSAS, and for the West coast was 21.87 MPSAS. The location with the best night sky brightness quality and the lowest light pollution is the West coast of North Sumatra.Abstrak: Fenomena astronomi yang terjadi pada waktu dan durasi tertentu menjadi salah satu objek kajian dan penelitian. Namun, tidak semua lokasi memberikan keterlihatan fenomena astronomi seperti yang diinginkan pengamat. Untuk mendapatkan data dengan kualitas terbaik, diperlukan pula lokasi pengamat terbaik. Dalam perjalanan penulis mengejar fenomena astronomi di sekitar Sumatera Utara, hanya beberapa tempat saja yang memberikan hasil keterlihatan dengan baik. Hal ini terkait dengan tingkat kecerahan langit malam dan tingkat polusi cahaya di lokasi tersebut. Kecerahan langit malam merupakan salah satu variabel yang perlu dimasukkan dalam penentuan lokasi pengamatan astronomi agar pengamat bisa mendapatkan hasil terbaik. Pengukuran yang dilakukan menggunakan sebuah fotometer yaitu Sky Quality Meter di beberapa lokasi untuk mendapatkan data kecerahan langit malam di sekitar Sumatera Utara. Dari pengukuran yang dilakukan, didapatkan hasil maksimal untuk pesisir timur Sumatera Utara adalah 19,39 MPSAS, pertengahan Sumatera Utara adalah 20,92 MPSAS, dan untuk pesisir Barat adalah 21,87 MPSAS. Maka lokasi dengan kualitas kecerahan langit malam terbaik dan polusi cahaya paling rendah berada sekitar pesisir Barat Sumatera Utara.

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

Show Abstract | Download Original | Original Source | Check in Google Scholar

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.

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

Show Abstract | Download Original | Original Source | Check in Google Scholar

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".

Co-Authors Abu Yazid Raisal Abu Yazid Raisal Ajraini Nazli Ajraini Nazli Arwin Juli Rakhmadi Arwin Juli Rakhmadi Butar-Butar Hasrian Rudi Setiawan Hidayat, Muhammad Isra Hayati Leo Hermawan Marataon Ritonga Muhammad Dimas Firdaus Muhammad Dimas Firdaus Muhammad Dimas Firdaus Muhammad Dimas Firdaus Muhammad Dimas Firdaus Muhammad Hidayat Muhammad Hidayat Muhammad Hidayat Nor Azam bin Mat Noor Riskiyan Hadi Rizkiyan Hadi

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