(Article updated in May 2021) The epidemic in 2020 brought great changes to the world. At the same time, the weather and atmospheric conditions were quite well because of the reduction of industrial activities. In 2020, I got many chances to photograph the Milky Way, especially in the urban area of Macau, even with seriously light pollution. I accomplished the missions with M4/3 cameras and the STC-Optics Astro-Multispectra filter, that I want to introduce now. I bought it and test it out immediately after the Taiwanese optics manufacturer STC-Optics launched the Olympus M4/3 clip filter. […]