Analysis tool for lunar crescent visibility criterion based on integrated lunar crescent database

Faid, M.S.; Mohd Nawawi, M.S.A.; Mohd Saadon, M.H.

doi:10.1016/j.ascom.2023.100752

Astronomy and Computing

2023

DOI: 10.1016/j.ascom.2023.100752

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Analysis tool for lunar crescent visibility criterion based on integrated lunar crescent database

M.S. Faid,

M.S.A. Mohd Nawawi,

M.H. Mohd Saadon

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Cited by 3 publications

References 16 publications

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Hijri Month Determination in Southeast Asia: An Illustration Between Religion, Science, and Cultural Background

Mohd Nawawi,

Faid,

Saadon

et al. 2024

Heliyon

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Hijri Month Determination in Southeast Asia: An Illustration Between Religion, Science, and Cultural Background

Mohd Nawawi,

Faid,

Saadon

et al. 2024

Heliyon

View full text Add to dashboard Cite

HilalPy: Software to analyse lunar sighting criteria

Faid,

Mohd Nawawi,

Abdul Wahab

et al. 2023

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Alteration of twilight sky brightness profile by light pollution

Faid,

Shariff,

Hamidi

et al. 2024

Sci Rep

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The phenomenon of twilight has been stipulated as naturally dependent on the variables of solar depression, aerosol concentration and ozone composition. The unique color spectrum of twilight is attributed by ozone layer and aerosol, whereas its brightness is heavily relying on the altitude of sun below horizon. While all the natural dependence is being researched extensively, the impact of light pollution on the brightness of the twilight is not being explored thoroughly. The objective of this study is to find out the alteration of light pollution towards the natural behavior of twilight sky brightness. Total of 84 data of twilight brightness was collected from 2014 until 2022 using Sky Quality Meter, and the specific location with profile classified as urban, suburban and pristine is investigated to study the impact of light pollution on twilight brightness. The result demonstrates that the stability of twilight brightness, which naturally factored by solar depression within the range of 18°, discovered to be heavy influenced by the zenith light pollution of the location sky, as evidenced by location that has zenith pollution of 17.11, 19.77, and 21.39, has horizontal twilight brightness of 14.84, 19.55 and 21.2 and solar depression during brightness stability at 11.5°, 15.67° and 17.49°.

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Analysis tool for lunar crescent visibility criterion based on integrated lunar crescent database

Cited by 3 publications

References 16 publications

Hijri Month Determination in Southeast Asia: An Illustration Between Religion, Science, and Cultural Background

Hijri Month Determination in Southeast Asia: An Illustration Between Religion, Science, and Cultural Background

HilalPy: Software to analyse lunar sighting criteria

Alteration of twilight sky brightness profile by light pollution

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