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Hemisphere:  Southern  ·  Contains:  IC 4601, IC 4603, IC 4604, IC 4605, M 19, M 4, NGC 6121, NGC 6273, Part of the constellation Scorpius (Sco), The star 22Sco, The star 24Oph, The star 26Oph, 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 (with bonus Comet), 


            Peter Pat
Rho Ophiuchi (with bonus Comet)
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Rho Ophiuchi (with bonus Comet)

Technical card

Imaging telescopes or lenses: Samyang 135mm f/2

Imaging cameras: Pentax K-5 IIs

Mounts: Skywatcher AZ-EQ6 GT AZ-EQ6 GT

Guiding cameras: Orion Starshoot Autoguider

Software: Adobe Photoshop CS5 PHOTOSHOP CS5.5

Dates:May 26, 2017

Frames: 20x90"

Integration: 0.5 hours

Avg. Moon age: 0.79 days

Avg. Moon phase: 0.71%

Basic astrometry details job: 1598725

RA center: 16h 39' 49"

DEC center: -24° 22' 37"

Pixel scale: 18.443 arcsec/pixel

Orientation: 90.886 degrees

Field radius: 7.117 degrees

Resolution: 1920x2008

Locations: Wiruna, Ilford, NSW, Australia


The Rho Ophiuchi region as a two panel mosaic using the Samyang 135mm lens. Comet 71P/Clark just happened to be in the field and can be seen as a small green dot below the yellow-orange nebulosity near Antares.

Pleased to have received an Honourable Mention for this image in the 2017 David Malin Awards!



Peter Pat
License: None (All rights reserved)

Sky plot

Sky plot


Rho Ophiuchi (with bonus Comet), 


            Peter Pat