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Contains:  NGC 7023
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NGC 7023, The Iris Nebula, 


            Randal Healey
NGC 7023, The Iris Nebula

NGC 7023, The Iris Nebula

Technical card

Resolution: 3284x2470

Dates:April 13, 2019April 16, 2019April 18, 2019

Astrodon BLUE 36mm - Gen2 E-Series Tru-Balance: 24x180" -20C bin 1x1
Astrodon GREEN 36mm - Gen2 E-Series Tru-Balance: 22x180" -20C bin 1x1
Astrodon HA 36mm - 5nm: 22x600" -20C bin 1x1
Astrodon Olll 36mm - 3nm: 24x600" -20C bin 1x1
Astrodon RED 36mm - Gen2 E-Series Tru-Balance: 24x180" -20C bin 1x1

Integration: 11.2 hours

Darks: ~50

Flats: ~50

Bias: ~100

Avg. Moon age: 11.10 days

Avg. Moon phase: 81.61% job: 2655581

RA center: 314.761 degrees

DEC center: 68.147 degrees

Pixel scale: 1.572 arcsec/pixel

Orientation: 12.853 degrees

Field radius: 0.897 degrees

Locations: Healey "Utahopia" Observatory, Kaysville, Utah, United States

Data source: Own remote observatory


Iris Nebula in HA,OIII,RGB
I have shot the Iris nebula before but was particularly please with the amount of surrounding nebulousness material I was able to capture this time. I hope you enjoy.

The Iris Nebula is a reflection nebula approximately 6 light years across and 1,300 light years away from Earth in the Cepheus constellation. Within the nebula, dusty nebular material (i.e.; interstellar dust and gas) surrounds a massive, hot, young star in its formative years. Central filaments of cosmic dust glow with a reddish photo-luminescence as some dust grains effectively convert the star's invisible ultraviolet radiation to visible red light. The nebula's dominant color, blue, is the result of dust grains reflecting star light. Infrared observations indicate that this nebula may contain complex carbon molecules known as PAHs.



Randal Healey
License: None (All rights reserved)

Sky plot

Sky plot


NGC 7023, The Iris Nebula, 


            Randal Healey