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



    
        

            Steve Milne
Iris Nebula in Cepheus
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Technical card

Imaging telescopes or lenses: TEC-140

Imaging cameras: QSI 690 WSG-8

Mounts: 10 Micron GM2000 HPS II UP

Guiding telescopes or lenses: TEC-140

Guiding cameras: Starlight Xpress Lodestar X2

Focal reducers: TEC Field Flattener

Software: Sequence Generator Pro  ·  Adobe Photoshop 6 CS  ·  Open PHD PHD 2.5  ·  Pixinsight 1.8

Filters: Astrodon Tru-Balance LRGB E-Series Gen 2 Blue  ·  Astrodon Tru-Balance LRGB E-Series Gen 2 Green  ·  Astrodon Tru-Balance LRGB E-Series Gen 2 Red  ·  Astrodon Tru-Balance LRGB E-Series Gen 2 Luminance


Dates:July 23, 2020

Frames:
Astrodon Tru-Balance LRGB E-Series Gen 2 Blue: 40x300" bin 1x1
Astrodon Tru-Balance LRGB E-Series Gen 2 Green: 40x300" bin 1x1
Astrodon Tru-Balance LRGB E-Series Gen 2 Luminance: 48x600" bin 1x1
Astrodon Tru-Balance LRGB E-Series Gen 2 Red: 40x300" bin 1x1

Integration: 18.0 hours

Avg. Moon age: 2.99 days

Avg. Moon phase: 9.79%


Basic astrometry details

Astrometry.net job: 3699472

RA center: 21h 1' 48"

DEC center: +68° 4' 8"

Pixel scale: 0.743 arcsec/pixel

Orientation: 89.484 degrees

Field radius: 0.441 degrees


Resolution: 3328x2676

Locations: E-EyE, Fregenal de la Sierra, Extremadura, Spain

Data source: Own remote observatory

Remote source: e-EyE Extremadura

Description

The Iris Nebula (Caldwell 4, NGC 7023) is a bright reflection nebula approximately 1,400 light years from Earth in the constellation of Cepheus.

The Iris was imaged between 12 and 23 July 2020 from an imaging rig in Spain that is owned and operated by Barry Wilson and me.

Capture details are as follows:

Telescope: TEC 140
Camera: QSI 690
Filters: Astrodon LRGB
Mount: 10 Micron GM1000HPS

Lum: 48 x 600s
Red: 40 x 300s
Green: 40 x 300s
Blue: 40 x 300s

A total of 18 hours exposure.

Data Capture: Steve Milne & Barry Wilson
Image Processing: Steve Milne

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Iris Nebula in Cepheus, 



    
        

            Steve Milne