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Contains:  NGC 7822
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NGC 7822 in the Hubble Palette, 


            Douglas J Struble
NGC 7822 in the Hubble Palette

NGC 7822 in the Hubble Palette

Technical card

Resolution: 4009x5015

Dates:June 24, 2017June 25, 2017June 26, 2017July 26, 2018July 28, 2018July 30, 2018

Astrodon Ha 5nm: 56x120" (gain: 139.00) -20C bin 1x1
Astrodon Ha 5nm: 76x240" (gain: 139.00) -20C bin 1x1
Astrodon OIII 3nm: 53x180" (gain: 139.00) -20C bin 1x1
Astrodon OIII 3nm: 73x240" (gain: 139.00) -20C bin 1x1
Astrodon SII 3nm: 60x180" (gain: 139.00) -20C bin 1x1
Astrodon SII 3nm: 61x240" (gain: 139.00) -20C bin 1x1

Integration: 21.5 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 8.48 days

Avg. Moon phase: 50.50%

Bortle Dark-Sky Scale: 6.33 job: 2175068

RA center: 0.759 degrees

DEC center: 67.291 degrees

Pixel scale: 0.551 arcsec/pixel

Orientation: 20.249 degrees

Field radius: 0.491 degrees

Locations: Backyard Red Zone Observatory, Taylor, MI, Michigan, United States

Data source: Backyard


While I love my BiColor process in narrowband with Ha and OIII with it's more natural appeal, it always lacks the detail and sharpness I get out of the traditional hubble palette due to the extra signal I get from the SII data. I suppose that is why I often a process a version of both.

NGC 7822 is a young star forming complex in the constellation of Cepheus. The complex encompasses the emission region designated Sharpless 171, and the young cluster of stars named Berkeley 59. The complex is believed to be some 800-1000 pc distant with the younger components aged no more than a few million years. The complex also includes one of the hottest stars discovered within 1 kpc of the Sun, namely BD+66 1673, which is an eclipsing binary system consisting of an O5V that exhibits a surface temperature of nearly 45000 K and a luminosity ~100,000 times that of the Sun. The star is one of the primary sources illuminating the nebula and shaping the complex's famed pillars of creation-type formations, the elephant trunks.



Douglas J Struble
License: None (All rights reserved)

Sky plot

Sky plot


NGC 7822 in the Hubble Palette, 


            Douglas J Struble