First Sightings of Lunar Crescent 2015-2019 for Brunei Darussalam

First Sightings of Lunar Crescent 2015-2019 for Brunei
First Sightings of Lunar Crescent 2015-2019 for Brunei (Click on the image for a larger version)

The table above provides the dates and concise data to hunt for the youngest possible lunar crescent in this country, which is a very challenging activity.

First sighting of the new crescent moon is used as the basis of various calendars to signal the start of the new month. For instance, Islam requires that the sighting of the the new crescent moon should be made with the naked eye.

Predicting the first sighting of the new crescent moon has been attempted since the time of the Babylonians. These ancient methods relied on the age of the Moon and the time difference between moonset and sunset. More modern methods use the angular separation of the Sun and Moon, the altitude difference between the Sun and Moon, their relative azimuths and the width of the crescent.

Guidelines on using the table.
Guidelines on using the table.

The following table shows the dates of possible first sighting of new moon crescent (in Arabic known as hilal) for Brunei Darussalam. These dates are colour-coded based on the moon altitude and a crude prediction of the new moon sighting can be related as follow:

1. Red that indicates the moon altitude which is less than 2°. A very slim chance of visibility due to low altitude.
2. Orange that signifies the moon altitude between 2° and 5.5°. There is a slim chance of crescent visibility. However visibility might be improved with the use of optical aids and excellent atmospheric conditions.
3. Yellow that the moon is at altitude between 5.5° and 7.5°. There is a good chance that the crescent is visible to the naked eyes under excellent atmospheric conditions.
4. Green that shows the moon’s altitude is more than 7.5°. The lunar crescent is positioned reasonably high above the horizon making it easily visible to the naked eye.

If you manage to sight the crescent on the dates provided, please share your experience and photos via pabd@bruneiastronomy.org

More info: Jadual Kenampakan Pertama Anak Bulan Di Negara Brunei Darussalam 2000 – 2099

 

 

2011 Aug 30 Brunei Sight Syawal Cresent 1432

Bandar Seri Begawan – The astronomical Society of Brunei Darussalam (PABD) carried out the moon crescent observation at Agok Hill in the afternoon. The weather was very cloudy and the moon crescent was only observed for a few minutes from 18:55 local time through telescopes, binocular and naked eyes.

The 31-hour-old new moon crescent visible through a telescope at 18:55 local time from Bukit Agok, August 30, 2011.
The 31-hour-old new moon crescent visible through a telescope at 18:55 local time from Bukit Agok, August 30, 2011.
A few minutes before the sunset. The weather condition was partly cloudy.
A few minutes before the sunset. The weather condition was partly cloudy.

Present at the observation were Pengiran Shahdani (Vice President II), Awang Hj Mohamad Azri (Exco) and 4 other members.

The result of the observation was submitted to Islamic Crescents’ Observation Project (ICOP). See worldwide observation result here.

Assigned vantage points throughout the country could sight the new moon of Syawal 1432 H. The official announcement of the sighting was also made on TV and Radio and Brunei Darussalam starts Aidilfitri tommorrow, 31 August 2011.

Visibility Predictions for the New Crescent Moon 1980 – 2030

This is a table computed by Her Majesty’s Nautical Almanac Office computes and distributes predictions of lunar crescent visibility for Bandar Seri Begawan, Brunei Darussalam from Year 1980 until 2030.

Visibility Predictions for the New Crescent Moon are catagorised by
A Easily visible
B Visible under perfect conditions
C May need optical aid to find the crescent Moon
D Will need optical aid to find the crescent Moon
E Not visible with a telescope
F Not visible, below the Danjon limit

Download below:

2007 July 15 First Crescent Sighted

"The crescent was captured on 15 July 2007 @ 6.50 pm (Bukit Shahbandar) with Olympus E-500 Digital camera attached to a 10 inch LX-200 with  focal reducer." said Hj Mahadi based on his ICOP report.
“The crescent was captured on 15 July 2007 @ 6.50 pm (Bukit Shahbandar)
with Olympus E-500 Digital camera attached to a 10 inch LX-200 with
focal reducer.” said Hj Mahadi based on his ICOP report.

The first crescent or hilal was visible from this country during the new moon sighting by the Survey Department on July 15. Based on the account, the moon’s altitude was
about 10.465 degrees, elongation of 11.223 degrees and it was 22 hours 33 minutes old at sunset. The visibility based on Mooncalc indicates that on 15th July 2007, the new moon should be easily visible from many parts of the world but ICOP report generalised, Brunei being the first eastern country to sight the new moon crescent.

Congratulation to the moon sighting committees of the Survey Department.

2004 Nov 13 Laporan Cerapan Hilal Syawal 1425H anak bulan yang paling muda kelihatan

Anak bulan Syawal 1425 H pada 13 Nov 2004 yang berumur kurang 20  jam. Bukit Agok. Oleh Pg Shahdani Pg Anom.
Anak bulan Syawal 1425 H pada 13 Nov 2004 yang berumur kurang 20 jam. Bukit Agok. Oleh Pg Shahdani Pg Anom.

Bandar Seri Begawan, 13 November 2004 – Rukyah Hilal Syawal diadakan pada petang hari ini bersamaan 29 Ramadhan.

Persatuan Astronomi Negara Brunei Darussalam juga membuat cerapan anak bulan pada petang tadi bertempat di kawasan lapang Bukit Agok, Tutong. Hanya empat orang ahli PABD yang hadir untuk pencerapan.

Ufuk Barat ketika matahari terbenam (jam 18:02) 13 November 2004. Bukit Agok, Tutong
Ufuk Barat ketika matahari terbenam (jam 18:02) 13 November 2004. Bukit Agok, Tutong

Walaupun kawasan sebelah ufuk barat berawan sedikit, sabit anak bulan yang berumur kurang dari 20 jam telah kelihatan selepas beberapa minit matahari terbenam.
Continue reading “2004 Nov 13 Laporan Cerapan Hilal Syawal 1425H anak bulan yang paling muda kelihatan”