Hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  34 P Cyg  ·  Crescent Nebula  ·  Crescent nebula  ·  NGC 6888  ·  NGC6888  ·  PK076+01.2  ·  Sh2-105  ·  The star 34Cyg
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Crescent HOO, 


            Nico Augustin
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Crescent HOO

Imaging telescopes or lenses: Skywatcher Evostar 72ed

Imaging cameras: ZWO ASI294MC Pro

Mounts: iOptron CEM25P

Guiding telescopes or lenses: Orion Mini Guide Scope 50 mm

Guiding cameras: ZWO ASI174MM Mini

Software: Topaz Labs DeNoise AI  ·  Adobe Photoshop 2020  ·  PixInsight 1.8  ·  Astro Pixel Processor

Filters: Optolong L-eNhance

Accessory: OVL Field Flattener  ·  Ikarus Technologies StellarMate OS  ·  Raspberry Pi 4

Dates:Sept. 1, 2020Sept. 3, 2020

Frames:Optolong L-eNhance: 80x300" (gain: 120.00) -5C bin 1x1

Integration: 6.7 hours

Darks: ~50

Flats: ~30

Flat darks: ~30

Avg. Moon age: 15.02 days

Avg. Moon phase: 98.96%

Bortle Dark-Sky Scale: 4.00

Astrometry.net job: 3828763

RA center: 20h 12' 15"

DEC center: +38° 20' 9"

Pixel scale: 1.398 arcsec/pixel

Orientation: 176.098 degrees

Field radius: 1.400 degrees

Resolution: 6000x4000

Locations: N von Selenter See bei Gut Salzow, Fargau-Pratjau, Schleswig-Holstein, Germany

Data source: Traveller


Imaged under the bright Moon... The l-eNhance tri-band filter is really effective in combination with my ASI294MC but eben then the bright moon killed a lot of contrast :-) However, I tried to rescue some OIII and a first attempt to work with the data did not completely failed. At least it was the first astrophotography chance for me since weeks.



  • Crescent HOO, 


            Nico Augustin
  • Final
    Crescent HOO, 


            Nico Augustin


Description: "True Tone" Version of the same data but stacked and drizzled in PixInsight. No HOO composite this time as there is not really enough signal from OIII for a satisfying result.

Uploaded: ...

Sky plot

Sky plot


Crescent HOO, 


            Nico Augustin