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Contains:  NGC 7822
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NGC 7822 in BiColor Ha & OIII, 


            Douglas J Struble
NGC 7822 in BiColor Ha & OIII

NGC 7822 in BiColor Ha & OIII

Technical card

Resolution: 4009x5012

Dates:June 23, 2017June 25, 2017July 26, 2018July 27, 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

Integration: 14.5 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 14.61 days

Avg. Moon phase: 50.43%

Bortle Dark-Sky Scale: 6.25 job: 2171643

RA center: 0.760 degrees

DEC center: 67.291 degrees

Pixel scale: 0.551 arcsec/pixel

Orientation: 20.255 degrees

Field radius: 0.491 degrees

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

Data source: Backyard


I originally tried capturing NGC 7822 in the hubble palette when I first got into narrowband. It is not the best DSO to start out on in narrowband, as it is really faint; especially in OIII and SII. This is a bicolor version in Ha and OIII. I am capturing more SII still and will do a hubble palette version. I had to really massage the OIII data even after capturing more OIII this year and combing it with last year's data. This is a combination of data taken last year with my old 102mm and this year with my current 152mm triplet.

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 BiColor Ha & OIII, 


            Douglas J Struble