Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  IC 1848  ·  IC 1871  ·  IC1848  ·  Sh2-197  ·  Sh2-198  ·  Sh2-199  ·  Sh2-201
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The Soul Nebula, 


            Sinan Arkin
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The Soul Nebula

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Imaging telescopes or lenses: Takahashi FSQ 106 EDX4

Imaging cameras: FLI ML16200

Mounts: Celestron CGX

Guiding telescopes or lenses: Takahashi FSQ 106 EDX4

Guiding cameras: ASI ZWO ASI120mm mini

Software: Photoshop CC  ·  Sequence Generator Pro  ·  Pleaides Astrophoto PixInsight  ·  Open PHD Guiding Project PHD2 Guiding

Filters: Chroma 3nm OIII 50mm  ·  Chroma 5nm SII 50mm  ·  Chroma 5nm Ha 50mm  ·  Chroma G 50mm  ·  Chroma R 50mm  ·  Chorma B 50mm

Accessory: PrimaLuceLab ECCO  ·  Celestron SkySync GPS  ·  Celestron StarSense  ·  Optec Alnitak Flip-Flat  ·  Optec Sagitta OAG  ·  PrimaLuceLab Eagle 3  ·  FLI Filter Wheel 5-7  ·  MoonLite NiteCrawler WR35  ·  QHYCCD Polemaster

Chroma 3nm OIII 50mm: 80x300" -20C bin 1x1
Chroma 5nm Ha 50mm: 82x300" -20C bin 1x1
Chroma 5nm SII 50mm: 84x300" -20C bin 1x1
Chorma B 50mm: 30x120" -20C bin 1x1
Chroma G 50mm: 30x120" -20C
Chroma R 50mm: 30x120" -20C bin 1x1

Integration: 23.5 hours

Darks: ~30

Flats: ~30

Flat darks: ~30

Bortle Dark-Sky Scale: 6.00

Astrometry.net job: 4042034

RA center: 2h 54' 4"

DEC center: +60° 22' 27"

Pixel scale: 2.327 arcsec/pixel

Orientation: -59.924 degrees

Field radius: 1.750 degrees

Resolution: 4292x3298

Locations: Bellapais, Kyrenia, Cyprus

Data source: Backyard


The nebula in modified HSO, stars in RGB. About 7 hours of data for each of the narrowband filters and 1 hour each for the broadband filters.



  • The Soul Nebula, 


            Sinan Arkin
  • The Soul Nebula, 


            Sinan Arkin
  • Final
    The Soul Nebula, 


            Sinan Arkin


Description: Raised black point, sharpening and application of LHE for the nebula; better treatment of stars

Uploaded: ...


Description: Reduced blue background glow

Uploaded: ...

Sky plot

Sky plot


The Soul Nebula, 


            Sinan Arkin