Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  NGC 7023
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The Iris Nebula - NGC 7023/Caldwell 4, 



    
        

            Serge Caballero
The Iris Nebula - NGC 7023/Caldwell 4
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The Iris Nebula - NGC 7023/Caldwell 4

Getting plate-solving status, please wait...
The Iris Nebula - NGC 7023/Caldwell 4, 



    
        

            Serge Caballero
The Iris Nebula - NGC 7023/Caldwell 4
Powered byPixInsight

The Iris Nebula - NGC 7023/Caldwell 4

Imaging Telescopes Or Lenses
Astro-Tech AT8IN
Imaging Cameras
QHY CCD QHY8
Mounts
CGEM
Filters
Lumicon UHC 2"
Accessories
Baader Planetarium MPCC Mark III
Software
Star Tools · Stark Labs Nebulosity 3.1.X · Photoshop CS6 · ADGSoftware PHD2 (OpenPHD)
Guiding Telescopes Or Lenses
Orion 50 mm mini guider
Guiding Cameras
Orion SSAG

Acquisition details

Dates:
Sept. 8, 2013 ·  June 4, 2014
Frames:
30x600" (5h) (gain: 11.00) -10C bin 1x1
37x360" (3h 42') (gain: 11.00) -8C bin 1x1
Integration:
8h 42'
Darks:
10
Flats:
20
Flat darks:
20
Bias:
90
Avg. Moon age:
4.57 days
Avg. Moon phase:
23.43%
Bortle Dark-Sky Scale:
5.00
Temperature:
21.00

Basic astrometry details

Astrometry.net job: 293805

RA center: 21h00m45s.6

DEC center: +68°0755

Pixel scale: 1.974 arcsec/pixel

Orientation: 179.154 degrees

Field radius: 0.961 degrees

Resolution: 2919x1940

Locations: Backyard, Gainesville, FL, United States

Description

The Iris Nebula (NGC 7023/Caldwell 4) is bright (magnitude 6. reflection nebula in the constellation Cepheus, spanning 6 light years across and about 1,300 light years from the Solar System. The Iris is surrounded by large areas and lanes of dark dust that are difficult to image from suburban skies, but some traces of this dust is visible here.

B Version re-processed to lift up dust from the background and to try to give the dust some of the characteristic brown I've seen in other images.

Comments

Revisions

  • Final
    The Iris Nebula - NGC 7023/Caldwell 4, 



    
        

            Serge Caballero
    Original
  • The Iris Nebula - NGC 7023/Caldwell 4, 



    
        

            Serge Caballero
    B

Sky plot

Sky plot

Histogram

The Iris Nebula - NGC 7023/Caldwell 4, 



    
        

            Serge Caballero