Sharpless 2-203 is one of the 313 emission nebulae compiled by American astronomer Stewart Sharpless in 1959. The nebula is an H II Region, defined as a large cloud of partially ionized hydrogen in which star formation has recently occurred.

Technical Information       
Date:              November, 2014
Location:        Green Valley, Arizona
Telescope:      Takahashi FSQ-106EDX
Camera:         SBIG STT-8300M
Filters:            Astrodon Gen 2
Mount:            AstroPhysics 1200
Exposure:       LRGB = 12:2:2:2 hours respectively, all unbinned
Software:        Acquisition: Maxim DL 5, TheSkyX, Pinpoint, CCD Commander
                       Processing: CCDStack, PhotoShop CS6 with various plugins