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Contains:  NGC 7023
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Inside the Iris Nebula in HA,OIII,RGB, 


            Randal Healey
Inside the Iris Nebula in HA,OIII,RGB

Inside the Iris Nebula in HA,OIII,RGB

Technical card

Resolution: 1018x967

Dates:April 22, 2019April 24, 2019April 25, 2019April 27, 2019

Astrodon BLUE 36mm - Gen2 E-Series Tru-Balance: 22x180" -20C bin 1x1
Astrodon GREEN 36mm - Gen2 E-Series Tru-Balance: 22x180" -20C bin 1x1
Astrodon HA 36mm - 5nm: 43x600" -20C bin 1x1
Astrodon Olll 36mm - 3nm: 24x600" -20C bin 1x1
Astrodon RED 36mm - Gen2 E-Series Tru-Balance: 24x180" -20C bin 1x1

Integration: 14.6 hours

Darks: ~50

Flats: ~50

Bias: ~100

Avg. Moon age: 20.35 days

Avg. Moon phase: 67.51% job: 2676842

RA center: 315.358 degrees

DEC center: 68.150 degrees

Pixel scale: 1.573 arcsec/pixel

Orientation: 12.232 degrees

Field radius: 0.307 degrees

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

Data source: Own remote observatory


Iris Nebula in HA,OIII,RGB
I published the Iris nebula before but this is a close-field look using combined data from my SCT and refactor.

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


Inside the Iris Nebula in HA,OIII,RGB, 


            Randal Healey