觀測記錄 20150821 M27 HOO 2015-08-21 admin M27 (Dumbbell Nebula) HOO hubble plates, Hα=200mins,OIII=200mins Alluna RC 16″ Sbig ST-i OAG guider Sbig STL-11000m -10°C Soft Bisque Paramount ME Ground alt =30m Kinmen, Taiwan. MPC CODE=P25 Maxim DL Pro 5, PS