Typology of dawn light curves in high and low light pollution areas

M Basthoni, H Setyanto - AIP Conference Proceedings, 2022 - pubs.aip.org
Based on visual observations, the emergence of dawn can be grouped into three groups
which are influenced by the zenith distance of the Sun, namely: astronomical dawn (Z= 108) …

Light pollution disturbance in detecting zodiacal light and twilight

M Basthoni, T Djamaluddin, A Izzuddin - AIP Conference Proceedings, 2023 - pubs.aip.org
It has been analyzed 285 light curve SQM (Sky Quality Meter) data for night sky conditions
until dawn in clear conditions and without moonlight interference in 20 locations. The …

DETERMINING THE INITIAL TIME OF MORNING PRAYER USING THE SOUND OF A ROCK'S CROWD

AZ Fikrah - Al-Hilal: Journal of Islamic Astronomy, 2024 - journal.walisongo.ac.id
Fajr al-ṣādiq is an indication of the entry of Fajr time. Another indication is the sound of a
rooster's crowing, which can be predicted based on his biological clock. Apart from that …