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Contains:  IC 4601, IC 4603, IC 4604, IC 4605, M 4, M 80, NGC 6093, NGC 6121, NGC 6144, Part of the constellation Scorpius (Sco), The star 12Sco, The star 13Sco, The star 22Sco, The star Al Niyat (σSco), The star Antares (αSco), The star οSco, The star ρOph, The star τSco, The star ψOph, The star ωOph, rho Oph nebula
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Rho Ophiuchi, 


            Onur Atilgan
Rho Ophiuchi
Powered byPixInsight

Rho Ophiuchi

Technical card

Imaging telescopes or lenses:Canon 200mm USM F2.8 L II

Mounts:Sky-Watcher EQ6 Pro

Software:Pixinsight 1.8

Dates:June 29, 2019

Frames: 25x120" ISO3200

Integration: 0.8 hours

Darks: ~25

Bias: ~100

Avg. Moon age: 26.02 days

Avg. Moon phase: 13.31%

Bortle Dark-Sky Scale: 2.00

Mean SQM: 21.60

Temperature: 16.00

Basic astrometry details job: 2802243

RA center: 16h 27' 36"

DEC center: -23° 48' 43"

Pixel scale: 6.900 arcsec/pixel

Orientation: 89.288 degrees

Field radius: 6.301 degrees

Resolution: 5469x3648

Data source: Traveller


Location: Alacam Mountains, Dursunbey, Balikesir.

Version C is the luminance mask I produced while processing the image. I liked it so much that I wanted to share it as a version as well.



Onur Atilgan
License: Attribution-ShareAlike Creative Commons


  • Rho Ophiuchi, 


            Onur Atilgan
  • Final
    Rho Ophiuchi, 


            Onur Atilgan
  • Rho Ophiuchi, 


            Onur Atilgan

Sky plot

Sky plot


Rho Ophiuchi, 


            Onur Atilgan