Mewlon-300CRS with Reducer F7.2　fl.2160mm Bitran BJ-53L Starlight Xpress OAG
AstroDon SII5nm Ha5nm OIII5nm filter SII10x600sec. Ha4x100min. OIII10x600sec. SAO R=SII G=Ha B=OIII 12/23-24/2014(JST)
CCDStack2, MaxIm DL6.03, StellaImage7, PhotoshopCC

Trapezium in Orion
05h 35m 04s -05 27' 00" Dim 47'