太陽黑子移近子午線

C.L.Chan

今早太陽黑子移近子午線, Sunspot group in Solar Activity Cycle 25,HKT: 2020/11/09, 09h38m Telescope: Astro Physics, Star 12 ED, D=12cm, Stop downto 1.8 inches, F.L.=102cm, Prime Focus, Thousand Oaks Glass solar filter ND5.Losmandy G-11 Equatorial Mount with motor drive. Canon EOS 700D camera, IRblock filter removed, ISO 100, 1/4000 sec exposure, jpg format. Stacking 16frames in 30 & Wavelet by RegiStax 6, Final touch by Microsoft Photo,Atmospheric Transparent: 8/10, Seeing: 8/10. Equipment borrowed from Mr. Ng.The location in this observation is Kennedy Town, Hong Kong 堅尼地城.