The Iris Nebula: NGC 7023 in Cepheus | Mayall Telescope
This image was obtained with the wide-field view of the Mosaic Camera on the 4-meter Mayall Telescope at Kitt Peak National Observatory. NGC 7023, also known as the Iris Nebula because of its flower-like shape, is a bright reflection nebula. The bluish glow of the nebula comes from a hot, massive star at the center of the nebula, named HD 200775. Blue light from the star is scattered off dust grains in the nebula, giving it its distinctive color. The dust can also be seen on the outer portions of the nebula, where it has a faint brownish color and blocks out stars behind it.
Distance: 1,300 light years
NGC 7023 was observed in the filters B (blue), V (green), R (orange) and Hydrogen-Alpha (red). The image is rotated 30 degrees CCW from North is up, East is to the left.
The Nicholas U. Mayall Telescope is a four-meter (158 inches) reflector telescope in Arizona named after the American observational astronomer of the same name. The telescope saw first light on February 27, 1973, and was the second-largest in the world at that time.
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Credit: T.A. Rector (University of Alaska Anchorage) and H. Schweiker (WIYN and NOIRLab/NSF/AURA)
Release Date: June 30, 2020
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