3 papers
astro-ph.IM2025
Spectroscopic study of the light-polluted night sky in Hong Kong
Chu Wing So, Chun Shing Jason Pun, Shengjie Liu
Spectroscopic study of the night sky has been a common way to assess the impacts of artificial light at night at remote astronomical observatories. However, the spectroscopic prope…
astro-ph.IM2025
Natural experiments from Earth Hour reveal urban night sky being drastically lit up by few decorative buildings
Chu Wing So, Chun Shing Jason Pun, Shengjie Liu +4
Light pollution, a typically underrecognized environmental issue, has gained attention in recent years. While controlling light pollution requires sustained efforts, Earth Hour off…
astro-ph.IM2024
Solar image quality assessment: a proof of concept using Variance of Laplacian method and its application to optical atmospheric condition monitoring
Chu Wing So, Edwin Lok Hei Yuen, Edgar Heung Fat Leung +1
Here we present a proof of concept for the application of the Variance of Laplacian (VL) method in quantifying the sharpness of optical solar images. We conducted a comprehensive s…