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Contains:  NGC 7023
Getting plate-solving status, please wait...
Iris Nebula (NGC 7023), 


            Ara Jerahian
Iris Nebula (NGC 7023)

Iris Nebula (NGC 7023)

Technical card

Resolution: 1656x1345

Dates:June 30, 2019July 3, 2019July 8, 2019July 26, 2019

ZWO 1.25" Blue: 60x240" -20C bin 1x1
ZWO 1.25" Green: 67x240" -20C bin 1x1
ZWO 1.25" Lum: 173x120" -20C bin 1x1
ZWO 1.25" Red: 64x240" -20C bin 1x1

Integration: 18.5 hours

Darks: ~50

Flats: ~50

Flat darks: ~50

Bias: ~50

Avg. Moon age: 14.43 days

Avg. Moon phase: 20.61%

Bortle Dark-Sky Scale: 5.00

Temperature: 15.62 job: 2869187

RA center: 315.362 degrees

DEC center: 68.174 degrees

Pixel scale: 1.160 arcsec/pixel

Orientation: 234.305 degrees

Field radius: 0.344 degrees

Locations: Home, Cape Elizabeth, ME, United States

Data source: Backyard


The Iris Nebula (LBN 487) in Cepheus lies 1300 ly away and is 6 ly across. The cluster of stars within the nebula is designated as NGC 7023. These designations are often used interchangeably. The nebula is illuminated largely by V380 Cep, a light blue 7-mag star with a B-V color index of 0.32.

I wanted to focus in on this nebulosity since I find the churning dark dust immediately surrounding the bright core mesmerizing.

I hope you enjoy.



Ara Jerahian
License: None (All rights reserved)


  • Iris Nebula (NGC 7023), 


            Ara Jerahian
  • Iris Nebula (NGC 7023), 


            Ara Jerahian
  • Iris Nebula (NGC 7023), 


            Ara Jerahian
  • Final
    Iris Nebula (NGC 7023), 


            Ara Jerahian


Applied a gentle UnsharpMask to the nebulosity.

Sky plot

Sky plot


Iris Nebula (NGC 7023), 


            Ara Jerahian