黑子已變成單極

C.L.Chan

太陽黑子已變成單極了, Sunspotgroup HKT: 2020/11/12, 10h06mTelescope: Astro Physics, Star 12 ED, D=12cm, Stop down to 8 cm, F.L.=102cm,Prime Focus, Baader solar film ND5. Losmandy G-11 Equatorial Mount with motordrive. Canon EOS 700D camera, IR block filter removed, ISO 100, 1/2000 sec exposure,jpg format. Stacking 21 frames in 37 & Wavelet by RegiStax 6, Final touchby Microsoft Photo, Atmospheric Transparent: 8/10, Seeing: 8/10. Equipmentborrowed from Mr. Ng. The location in this observation is Kennedy Town, HongKong 堅尼地城.