Sunspot 태양 흑점 2019.4.13.
Sunspot. 태양 흑점. 2019. 04. 13. 07:54 UTC (16:54 KST). Bum-Suk Yeom. 염범석. http://cometsky.com/astrophotos/sunspot_20190413_med_bsyeom.jpg Taken by Bum-Suk Yeom on April 13, 2019 UTC @ Iksan, South Korea. Details: 07:54 UTC (16:54 KST), Takahashi TOA-150 Apo refractor (f=1100mm, F7.3), Canon EOS M6 camera, Solar filter, ISO 200, f/7.3, 1/2000 sec x 4. 2019. 04. 13. 16:54 KST, 다카하시 토아-150 아포 굴절망원경 (..
2019. 4. 14.