AXIS 232D Network Dome Camera located in Sydney Australia
Webcams located at SOAR Observatory – The Southern Astrophysical Research Telescope located in Chile
BRT Tenerife Telescope Webcam located in Spain
Webcam located at Mauna Kea observatory at the University of Hawaii Hilo
Webcam from the Canada-France-Hawaii Telescope observatory in Hawaii
Webcam at JAT Observatory in Fairless Hills, Pennsylvania
最少有多6個太陽天文台同時關閉
"we note that all these solar/space cams down at the same time"
頻率嘅定義係乜
人類可以調教自己嘅頻率同宇宙同步嗎?