Oleh Shahir Akram Hassan & Mohd Shukri Hanapi
Pusat Kajian Pengurusan Pembangunan Islam (ISDEV)
Universiti Sains Malaysia
11800 Pulau Pinang
Tel: 04-6532661 Faks: 04-6532124
E-mail: email@example.com / firstname.lastname@example.org
Kertas kerja ini merupakan sebahagian daripada hasil penyelidikan yang bertajuk Pengaplikasian Rukyah dan Hisab di Asia Tenggara [(RUI)1001/CISDEV/816269] dan telah dibiayai oleh Geran Research University Individual (RUI), Universiti Sains Malaysia (2015–2016).
By MOHAMMAD SH. ODEH, Arab Union for Astronomy and Space Sciences (AUASS), P.O. Box 141568, Amman 11814, Jordan (e-mail: email@example.com) (Received 12 May 2005; accepted 19 September 2005)
Abstract. A new criterion for lunar crescent visibility has been established using 737 observations, almost half of them obtained by the Islamic Crescent Observation Project (ICOP). This criterion is based on two variables, viz. the topocentric arc of vision and the topocentric crescent width. The new model is able to predict the visibility of the lunar crescent both for naked eye and optically aided observations. From the database we found a Danjon limit of 6.4 degrees.
Introduction The lunar crescent visibility has been studied by many astronomers since the Babylonian era, with as a result currently more than 12 different criteria for lunar crescent visibility, based on a number of sightings in different lunar conditions. Many of these criteria were developed by Islamic astronomers, since a number of Islamic religiouseventsaredirectlyrelatedtolunarcrescentsighting.Forexample,thenew Lunar (Hijric) month begins on the next day of sighting the new crescent at west after sunset.
Buku ini adalah dihasratkan sebagai rujukan bagi ilmuan-ilmuan di Negara Brunei Darussalam dan sumbangan kajian berunsur saintifik. Di dalam buku ini terkandung kompilasi jadual waktu bagi kenampakan anak bulan yang pertama. Penghasilan jadual ialah dengan mengunakan berbagai-bagai perisian astronomi dan program yang diaturacara oleh Hazarry bin Hj Ali Ahmad.
Moon watchers can download this eBook Your Guide to the Moon, a supplementary edition in Astronomy magazine 2014, by Robert Burnham. It features moon watchers’ tips and moon maps which will guide you the location of lunar craters and maria visible in each lunar cycle from new crescent to last quarter. It will definitely aid your lunar observation. Download it here
Above: Professor Boonrucksar Soonthornthum (IAU) with members of the Astronomical Society of Brunei Darussalam. More Photos.
Bandar Seri Begawan – Brunei Darussalam Astronomical Society had a discussion with Professor Boonrucksar Soonthornthum, Director of National Astronomical Research Institute of Thailand (NARIT), yesterday afternoon (16 July 2011).
Among the purposes of the meeting is to promote astronomy education and popularizing astronomy in this country. Boonrucksar who is also the national members of International Astronomy Union (IAU) wishes the Astronomical Society of Brunei Darussalam, and Brunei in general, to establish cooperation with South-East Asian Astronomy Network (SEAAN). This network serves South-East Asian countries to collaborate and strengthen Astronomical research activities in this region.
Briefing on the International Astronomy Union information is also presented by Professor Boonrucksar Soonthornthum. He explained that “Thailand has become a national member of the IAU in 2006 and currently there are 70 countries or national members.” Currently, Brunei has not been a candidate to become the member of the IAU.
NARIT has a number of modern observatories. Among them is the Thai National Observatory is located in the Province of Chiang Mai houses a 2.4 meter telescope. Attract also established five fruits and k. Public Observatories One of the prototype is located in Southern Thailand (about the same latitude as Brunei) and Professor Boonrucksar Suggested that this observatoy to be one of the research center for Islamic Astronomy. These observatories are expected to be in operation in 2012, next year.
Present at the meeting were Exco PABD: Dk Ratna (Treasurer), Hj Julaihi (Deputy Secretary-I), Pg Shahdani (Deputy Secretary II) and Dyg Salmah (Exco member). Also participating in the discussions is Dr Dr Hj Norarfan Hj Zainal, Deputy Raes of Seri Begawan Religious Teachers University College (Kupu SB).