難得一見的兩組巨大黑子群同時出現

C.L.Chan

在第24周太陽黑子活動周期中 , 難得一見的兩組巨大黑子群同時出現 .
The Sun, 2014/12/20, HKT : 10h29m,
Telescope: Astro Physics, Star 12 ED, D=12cm, F.L.=102cm, Prime Focus, Thousand Oaks Glass solar filter ND5.Losmandy G-11 Equatorial Mount with motor drive.
Canon EOS 300D camera, ISO 100, 1/4000 sec exposure.
Atmospheric Transparent : 8/10, Seeing :85/10.
Wavelet and gamma processed by Registax,
Took at Kennedy Town, Hong Kong. Equipment borrowed from H.C.Ng.