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Contains:  NGC 6383, NGC 6357, NGC 6334, NGC 6281, IC 4628, rho Oph nebula, IC 4604, IC 4592, The star γLup, The star Lesath (υSco), The star Graffias (β1Sco), The star ζOph, The star Sabik (ηOph), The star Dschubba (δSco), The star εSco, Sargas (θSco), The star Girtab, The star Shaula (λSco), The star Antares (αSco), Part of the constellation Serpens (Ser), Part of the constellation Scorpius (Sco), Part of the constellation Ophiuchus (Oph), Part of the constellation Lupus (Lup)
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Testing the Canon 50mm f/1.4 lens - Rho Ophyuchi, 


            Eduardo Oliveira
Testing the Canon 50mm f/1.4 lens - Rho Ophyuchi

Testing the Canon 50mm f/1.4 lens - Rho Ophyuchi

Technical card

Imaging camera:Canon 6D

Mount:Astro-Physics Mach1GTO

Guiding telescope or lens:Megrez 90

Guiding camera:ZWO ASI 120 MM

Software:O'Telescope BackyardEOS

Resolution: 5496x3670

Dates:June 16, 2018

Frames: 12x200"

Integration: 0.7 hours

Avg. Moon age: 3.09 days

Avg. Moon phase: 10.42% job: 2109913

RA center: 16h 50' 33"

DEC center: -26° 52' 4"

Pixel scale: 26.345 arcsec/pixel

Orientation: 73.220 degrees

Field radius: 24.182

Locations: Home Observatory, Diamantina, MG, Brazil

Data source: Backyard


This was the first test of my recent acquired Canon EF 50mm f/1.4 lens. The lens was stopped down to f/2.8. Significant coma at the corners of the field but otherwise a good and fast lens.



Eduardo Oliveira
License: None (All rights reserved)

Sky plot

Sky plot


Testing the Canon 50mm f/1.4 lens - Rho Ophyuchi, 


            Eduardo Oliveira

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O'Telescope BackyardEOS