Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  Iris Nebula  ·  NGC 7023  ·  NGC7023  ·  VdB139
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Iris Nebula (Reprocessed), 


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Iris Nebula (Reprocessed)

Imaging telescopes or lenses: Planewave CDK24

Imaging cameras: FLI Proline 16803

Mounts: Planewave L600

Guiding cameras: Starlight Xpress Ultrastar

Focal reducers: None

Software: PixInsight 1.8  ·  Sequence Generator Pro  ·  Photoshop CS3  ·  PHD Guiding 2  ·  CCDWare CCD Inspector  ·  Planewave PWI4  ·  Planewave PWI3  ·  Maxim DL6

Filters: Astrodon 50mm B  ·  Astrodon 50mm R  ·  Astrodon 50mm L  ·  Astrodon 50 mm G

Accessory: FLI CFW-5-7  ·  Astrodon Monster MOAG  ·  Hedrick Focuser  ·  Planewave Delta-T  ·  Planewave EFA

Astrometry.net job: 3646350

RA center: 21h 1' 24"

DEC center: +68° 10' 8"

Pixel scale: 0.468 arcsec/pixel

Orientation: 1.834 degrees

Field radius: 0.231 degrees

Resolution: 2686x2320

Locations: KG Observatory, Julian, CA, United States

Data source: Backyard


This is a reprocess of my prior image from September 2019.

Skies were relatively dark (21.4) and steady (1.8") during luminance capture. But with only 2 hours of luminance, denoise was a challenge.

I feel this version may be a bit more natural with less noise and minimized red halos around stars from red acquisition during an unsteady period.

I also cropped closer to hide the noisier dark nebulosity and rotated 180 to match some APOD reference shots. (-:



    Iris Nebula (Reprocessed), 


  • Final
    Iris Nebula (Reprocessed), 




Description: Cleaned up some sharpening artifacts.

Uploaded: ...

Sky plot

Sky plot


Iris Nebula (Reprocessed),