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

Technical card

Imaging telescope or lens: Canon 200mm f/2.8

Imaging camera: Canon 6D

Mount: Orion Atlas EQ-G

Guiding telescope or lens: Megrez 90

Guiding camera: ZWO ASI 120 MM

Software: O'Telescope BackyardEOS

Resolution: 5496x3670

Dates: June 24, 2017

Frames: 50x130" ISO4000

Integration: 1.8 hours

Darks: ~50

Bias: ~50

Avg. Moon age: 0.45 days

Avg. Moon phase: 0.23%

Bortle Dark-Sky Scale: 4.00 job: 1625778

RA center: 247.891 degrees

DEC center: -24.188 degrees

Pixel scale: 6.910 arcsec/pixel

Orientation: -94.345 degrees

Field radius: 6.343 degrees


Another go at the Rho Ophiuchi cloud complex, this time pushing the ISO configuration to the limits of my sky darkness.



Eduardo Oliveira


Sky plot

Sky plot


Rho Ophiuchi Cloud Complex, Eduardo Oliveira

Made possible by

O'Telescope BackyardEOS