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NGC 7822 - Emission Nebula in Cepheus

Contains: NGC 7822

Technical card

Imaging telescope or lens: Takahashi FSQ-106N FSQ

Imaging camera: QSI 683 wsg-8 QSI

Mount: apt1200gto AP1200

Guiding telescope or lens: Takahashi FSQ-106N FSQ

Guiding camera: QSI 683 wsg-8 QSI

Software: CCD Autopilot 5

Resolution: 3149x1962

Dates: Aug. 29, 2014

Frames: 26x600"

Integration: 4.3 hours

Avg. Moon age: 3.09 days

Avg. Moon phase: 10.40% job: 1509413

RA center: 0.922 degrees

DEC center: 67.214 degrees

Pixel scale: 2.106 arcsec/pixel

Orientation: -179.648 degrees

Field radius: 1.085 degrees

Locations: ImagingInfinity Observatory, Bethune, SC, United States


NGC7822, otherwise known as Cederblad 214 (or alternately known in other catalogs as Sharpless 171) is a large emission nebula in the constellation of Cepheus. Prominently visible are a number of bright rimmed globules undergoing a process called photoevaporation, whereby radiation from nearby stars is eroding the light gaseous elements away, leaving heavier and darker dust clouds. The compression and evolution of these globules leads to star formation. Our own sun and solar system was likely formed in a similar manner from the remnants of earlier generations of stars that gave up the heavier elements that they had synthesized during their lifetimes when they ended their existence in supernova explosions.

NGC7822 lies at a distance of approximately 2750 light-years.



Hap Griffin

Sky plot

Sky plot


NGC 7822 - Emission Nebula in Cepheus, Hap Griffin