M17: the Omega nebula in Sagittarius

A diffuse HII region, some of whose light is blocked by dark interstellar dust clouds.

Images taken: Avery Tucker, Carolina Cassisa, Sept. 18 - Nov. 8, 2023.

Telescope: CDK 17 in.

Camera: SBIG ST-10 CCD camera

Image processing: CCDoops + CCDSoft + Photoshop CS.

Images taken: A. Lavinghouse, N. Seawright, Casey Kirk, on Oct. 3-4, 2010.

Telescope: Meade 12 in at f/5.71 (f=70 in).

Camera: SBIG ST-10 CCD camera

Image processing: CCDoops + CCDSoft + Photoshop CS.