NGC 6888[Caldwell 27, Sharples 105) Crescent Nebula (Cygnus) 초승달 성운 - Telescope : Takahashi FCT-100 - Corrector : William Optics 68 Flattener - Camera : SBIG ST-8300M - Mount : RainbowAstro RST-135 - Guide Telescope : 60mm finder guide - Guide Camera : ZWO ASI 174mm - Filter : Baader Ha (7nm) - Exposure : 300s x 15 shot - Date/Time : 20. Aug., 2020 / 03:29(KST)~ - Location : Deuksan, South Korea..