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Contains:  IC 4603, IC 4604, IC 4605, M 4, M 80, NGC 6093, NGC 6121, NGC 6144, The star 22Sco, The star Al Niyat (σSco), The star Antares (αSco), The star οSco, The star ρOph, rho Oph nebula
Rho Complex, 


            Jirair Afarian
Rho Complex
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Rho Complex

Technical card

Dates:June 7, 2019

Frames: 118x90" (gain: 90.00) -18C bin 1x1

Integration: 3.0 hours

Darks: ~30

Flats: ~40

Avg. Moon age: 4.41 days

Avg. Moon phase: 20.41%

Bortle Dark-Sky Scale: 6.00

Mean FWHM: 5.80

Temperature: 13.00

Basic astrometry details job: 2734180

RA center: 16h 24' 24"

DEC center: -25° 0' 32"

Pixel scale: 3.984 arcsec/pixel

Orientation: 307.238 degrees

Field radius: 3.252 degrees

Resolution: 4904x3236

Locations: Home Observatory, Richmond Hill, Ontario, Canada

Data source: Backyard


First attempt at the Rho Complex, very heavy light polluted part of the sky (facing south towards Toronto) and very low in the sky (max altitude I got was just under 20 degrees and the majority was taken just above 15 degrees). So not ideal conditions. Either way I am happy to say I captured something! Almost 3hrs worth, 90s subs with the RedCat 51 and ASI071 color camera.



Jirair Afarian
License: None (All rights reserved)

Sky plot

Sky plot


Rho Complex, 


            Jirair Afarian