M17, NGC 6618, NGC 6530 Nebulosa de emissão - Emission nebula , dim 20'x15' Sgr, 18:20:48.0 -16 11 00

M17 "Nebulosa do Cisne" Takahashi FC60 f/8.3 (500mm)+ATIK-1HS 2.3" res 80% Takahashi P2Z exp: 16' (16x60)