Contains: NGC 6281, NGC 6268, IC 4628, NGC 6242, NGC 6231, The star ζ2Sco, The star ζ1Sco, The star μ2Sco, The star μ1Sco, Part of the constellation Scorpius (Sco)
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IC4628 Prawn Nebula widefield

Technical card

Imaging telescope or lens: Canon 300mm f/4.0 L

Imaging camera: Canon Eos6da

Mount: iOptron 3200

Guiding telescope or lens: Skywatcher 9x50 finder

Guiding camera: Lacerta MGEN

Software: Pleiades Astrophoto, S.L. Pix InsightPhotoshop

Resolution: 3660x2436

Dates: Aug. 21, 2017

Frames: 41x120"

Integration: 1.4 hours

Avg. Moon age: 29.24 days

Avg. Moon phase: 0.10% job: 1844794

RA center: 253.849 degrees

DEC center: -40.357 degrees

Pixel scale: 6.901 arcsec/pixel

Orientation: 269.638 degrees

Field radius: 4.214 degrees

Locations: Hakos Guest Farm, 100km past Windhoek, Namibia


The wider field around IC4628 is rich in star clusters, dark and emission nebulae. The line of bright blue stars culminating in cluster NGC6231 near Grafias the bright yellow star is a hallmark of the Scorpius milkyway. Eos6da at Iso 1250.

Visit the closeup with 8" f/4 at






annotated version

Sky plot

Sky plot


IC4628 Prawn Nebula widefield,