NGC 6618, M 17, Collinder 377 or OCL 44 is a beautiful emmision nebula projected against a very fine star field in the constellation of Sagittarius. It is roughly 15.00' by 3.00' arc minutes in the brightest parts but is much broader overall at some 46.00' by 37.00' arc minutes and shines at a magnitude of 7.30.

Taken with a Takahashi Sky-90 fitted with a Takahashi Reducer/Flattener and operating at f/4.5. Taken in the light of Hydrogen Alpha (Ha).