Internet Archive Scholar

The Beginning of Astronomical Time and the Feriae Martis [chapter]

Leonardo Magini
2014 Stars, Myths and Rituals in Etruscan Rome  

Preserved Fulltext

fulltext thumbnail
Web Archive Capture PDF (280.9 kB)
https://web.archive.org/web/20170812090525/http://www.idosi.org/mejsr/mejsr12(1)12/18.pdf

A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL. The file type is application/pdf.

According to fiqh, muslim prayer time of Isha' begins when shafaq phenomenon disappears at dusk. This research implements astronomical determinations to study the phenomenon and result the empirical descriptions. The observation was conducted at Tanjung Aru, Sabah, East Malaysia. Based on suitability, the disappearance of shafaq al-abyad is applied for Malaysia locality condition. The research has employed SQM-LE meter to collect sky brightness data. According to the results, the sky brightness
more » ... magnitude for the disappearance of shafaq al-abyad is obtained averagely at 20.79 ± 0.36 mag/arcsec with mean solar depression 2 angle at 107.99° ± 0.16°. The results are considered to be still consistent with the theoretical value of 108° which marks the beginning of night time and the disappearance of daylight.
doi:10.1007/978-3-319-07266-1_1 fatcat:pedtlsp5hnfhlliedc5vmgkbga
Citation

Leonardo Magini. "The Beginning of Astronomical Time and the Feriae Martis." Stars, Myths and Rituals in Etruscan Rome (2014) 1-3