Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  NGC 7023
NGC 7023 - The Iris Nebula, 


            Steve Furlong
NGC 7023 - The Iris Nebula
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NGC 7023 - The Iris Nebula

Technical card

Imaging telescopes or lenses: Altair Astro RC 8"

Imaging cameras: ATIK 383L+ mono

Mounts: Skywatcher NEQ6 PRO

Guiding cameras: Starlight Xpress Lodestar guide camera

Focal reducers: Astro Physics CCDT67 0.67x

Software: PixInsight 1.7

Filters: Baader Planetarium LRGB 2"

Dates:June 3, 2013

Frames: 53x600"

Integration: 8.8 hours

Avg. Moon age: 24.80 days

Avg. Moon phase: 23.27%

Basic astrometry details

Astrometry.net job: 308536

RA center: 21h 1' 33"

DEC center: +68° 9' 57"

Pixel scale: 1.007 arcsec/pixel

Orientation: 86.840 degrees

Field radius: 0.566 degrees

Resolution: 620x461


NGC7023 the Iris Nebula is bright reflection nebula in the constellation Cepheus. It is approximately 1300 light years away and 6 light years across. NGC7023 is the cluster inside the nebula. The nebula is illuminated by a +6.8 mag star SAO19158.

L:= 36 x 600s
R:= 6 x 600s
G:= 6 x 600s
B:= 5 x 600s

Taken on the nights of 31st May, and the 3rd, 5th, 6th and 13th June 2013.

An incomplete data set that I have tried to do my best with in order to try and finish this image. Seriously lacking in colour data due to the typical UK weather.


Sky plot

Sky plot


NGC 7023 - The Iris Nebula, 


            Steve Furlong