NGC 7000 "The Great Wall"
Telescope: 0.25m at Mayhill, NM
Camera Filters: Hydrogen, Oxygen, Sulfur, Luminance
Total exposure: 11 hours
Image width: 1.5 degree
The Great Wall is a portion of the North American / Pelican nebular complex, a very large, relatively faint, hydrogen-emission nebula. The North-American nebula complex’s shape devolves from selective obscuration by intervening dusty patches between us and the hydrogen cloud.