North & South: Sh2-27, blue horsehead & Antares region (Frédéric Auchère)

Celestial hemisphere: Southern · Constellation: Scorpius (Sco) · Contains: 10 ome02 Sco · 10.05 · 11 Sco · 11.35 · 12 c01 Sco · 12.76 · 13 c02 Sco · 13 zet Oph · 13.40 · 14 nu. Sco · 14.19 · 15 psi Sco · 16 Sco · 17 chi Sco · 18 Oph · 18 Sco · 19 omi Sco · 20 Oph · 20 sig Sco · 21 alf Sco · 211 Isolda · 22 i Sco · 23 Oph · 23 tau Sco · 24 Oph · 24 Sco · 25 Sco · 3 Sco · 3 ups Oph · 4 Sco · And 88 more.

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North & South: Sh2-27, blue horsehead & Antares region

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North & South: Sh2-27, blue horsehead & Antares region

If I had known of Sh2-27 when I was in La Silla last year, I would have shot it to complement my Scorpius' head mosaic. But instead of the stunning Chilean sky, I took two panels last May from my french countryside site (with the Samyang @f2.0 + 6D atop the AZ-EQ6 instead of the Star Adventurer) in less favorable conditions. Bortle 3-4 maybe. Not that bad but the field was not more than 30° above the horizon while it was at the zenith last year! The individual frames are greenish...) So I had to deal with a pretty strong gradient in the northern two panels (left hand side) while there was virtually none in the two southern ones (right hand side). This, plus cirrus clouds passing by limited the SNR in the new panels and made the matching a bit challenging. Anyway, this is the best I can do for now. Acquisition details are for the new panels. Feedback welcome!

Final
Original
B

B

Description: 3200x1800 wallpaper

Uploaded: ...

Samyang 135 f/2
Imaged with APT
Camera Lens Astrophotography
Low-Cost Astrophotography
Very Wide Field

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Status	Advanced success
Started	...
Astrometry.net job	3817298
PixInsight job	K1X2YSFI0253HPCE0P7GOTVSN2TKUFSL
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	16h26m37s.4
RA (top/left)	15h57m24s.3
RA (top/right)	15h52m09s.8
RA (bottom/right)	17h00m50s.4
RA (bottom/left)	16h56m16s.7

Dec (center)	-19°05′09″
Dec (top/left)	-05°38′34″
Dec (top/right)	-31°58′31″
Dec (bottom/right)	-32°07′12″
Dec (bottom/left)	-05°44′39″

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North & South: Sh2-27, blue horsehead & Antares region

North & South: Sh2-27, blue horsehead & Antares region

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North & South: Sh2-27, blue horsehead & Antares region

North & South: Sh2-27, blue horsehead & Antares region

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