Hemisphere:  Northern  ·  Contains:  NGC 7538  ·  NGC7538  ·  Sh2-158
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NGC 7538, 


            Cedric Raguenaud
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Imaging telescopes or lenses: Skywatcher 300/1500

Imaging cameras: QHYCCD 183C

Mounts: Skywatcher EQ8 pro

Guiding telescopes or lenses: TS-Optics OAG

Guiding cameras: ZWO ASI120MM

Focal reducers: Baader MPCC Mark III Coma Corrector

Software: Gimp 2.10  ·  PixInsight 1.8 Ripley

Accessory: Home made focuser

Dates:July 17, 2020July 18, 2020July 19, 2020July 22, 2020

Frames: 83x600" (gain: 16.00) -15C bin 1x1

Integration: 13.8 hours

Avg. Moon age: 20.93 days

Avg. Moon phase: 5.76%

Bortle Dark-Sky Scale: 3.75

Mean SQM: 21.57

Astrometry.net job: 3694301

RA center: 23h 13' 40"

DEC center: +61° 30' 26"

Pixel scale: 0.655 arcsec/pixel

Orientation: -5.028 degrees

Field radius: 0.222 degrees

Resolution: 2048x1316

Locations: ORCA Observatory, Near Matha, Charente-Maritime, France

Data source: Own remote observatory


The rarely imaged NGC 7538 lives not too far from the Bubble nebula.

I was hoping for more data, but the weather has turned so I might not get any for a while. So I upload this version in the meantime.



Cedric Raguenaud
License: Attribution-NonCommercial-ShareAlike Creative Commons


  • NGC 7538, 


            Cedric Raguenaud
  • Final
    NGC 7538, 


            Cedric Raguenaud

Sky plot

Sky plot


NGC 7538, 


            Cedric Raguenaud