Add to ORKGIn astronomy, there are three types of dawn. They are astronomical, nautical, and civil dawn. The sunlight is starting to appear on the east horizon when the Sun altitude is 18o below the horizon. Hence, there is a change on the sky brightness. The sky brightness can be affected by the moon phases. The sky brightness level is monitored by Sky Quality Meter (SQM). The SQM was installed upward to the zenith. There are 4 locations of measurement in Yogyakarta. The data has been collected for nine months to obtain the complete moon phases. The beginning of astronomical dawn is time when the sky brightness level is starting to decrease. The moving average algorithm was employed to determine the beginning of astronomical dawn. The time when the ...
The first visibility of the dawn occurs at a definite angle of the sun depression, Do which is used ...
Obscuration of the Sun by the Moon during total solar eclipse generates the changing of the sky bri...
Astronomy has been practiced for as long as humans have been looking at the sky. Early civilizations...
In astronomy, there are three types of dawn. They are astronomical, nautical, and civil dawn. The s...
In astronomy, there are three types of dawn. They are astronomical, nautical, and civil dawn. The su...
In astronomy, there are three types of dawn. They are astronomical, nautical, and civil dawn. The s...
The indication of began to enter the shubuh prayer time is when emerge the morning dawn and lasted u...
Zodiacal light is a night sky phenomenon that can occur before or after dusk. Additionally, zodiacal...
Switching off the light for one hour is annual global event to celebrate the Earth Hour. At that tim...
Early fajr time research was carried out by various parties with various techniques, one of which wa...
This paper summarizes ISRN’s 3-years research on the occurrence of dawn and dusk to mark the timing...
This study aims to observe the determination of the beginning of the Hijri month in the implementati...
The main challenge in the young crescent moon (YCM) observation is the ability to detect the appeara...
The meteorological data is important to be collected especially at the observatory. Temperature and ...
The aim of this study is to detect elusive lightthat indicate the prayer time (Isha’). Therefore, we...
The first visibility of the dawn occurs at a definite angle of the sun depression, Do which is used ...
Obscuration of the Sun by the Moon during total solar eclipse generates the changing of the sky bri...
Astronomy has been practiced for as long as humans have been looking at the sky. Early civilizations...
In astronomy, there are three types of dawn. They are astronomical, nautical, and civil dawn. The s...
In astronomy, there are three types of dawn. They are astronomical, nautical, and civil dawn. The su...
In astronomy, there are three types of dawn. They are astronomical, nautical, and civil dawn. The s...
The indication of began to enter the shubuh prayer time is when emerge the morning dawn and lasted u...
Zodiacal light is a night sky phenomenon that can occur before or after dusk. Additionally, zodiacal...
Switching off the light for one hour is annual global event to celebrate the Earth Hour. At that tim...
Early fajr time research was carried out by various parties with various techniques, one of which wa...
This paper summarizes ISRN’s 3-years research on the occurrence of dawn and dusk to mark the timing...
This study aims to observe the determination of the beginning of the Hijri month in the implementati...
The main challenge in the young crescent moon (YCM) observation is the ability to detect the appeara...
The meteorological data is important to be collected especially at the observatory. Temperature and ...
The aim of this study is to detect elusive lightthat indicate the prayer time (Isha’). Therefore, we...
The first visibility of the dawn occurs at a definite angle of the sun depression, Do which is used ...
Obscuration of the Sun by the Moon during total solar eclipse generates the changing of the sky bri...
Astronomy has been practiced for as long as humans have been looking at the sky. Early civilizations...