Cygnus Loop widefield HaOIIIRGB (Sergey Trudolyubov)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: 52 Cyg · BW Vul · Filamentary nebula · IC 1340 · Lace-work nebula · NGC 6960 · NGC 6974 · NGC 6979 · NGC 6992 · NGC 6995 · Network nebula · Sh2-103 · The star 52Cyg · Veil nebula

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Cygnus Loop widefield HaOIIIRGB

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Cygnus Loop widefield HaOIIIRGB

A widefield Ha/OIII/RGB image of the Cygnus Loop supernova remnant complex taken with Rokinon 135mm f2 lens and ZWO ASI183MM Pro camera over the course August-November 2018. The lens was riding piggyback on the Stellarvue APO SVA130T triplet mounted on the Orion HDX-110 EQ-G mount.

The image is a combination of narrowband (Ha and OIII) and RGB data. The synthetic luminance was produced using Ha and OIII data. Each color channel is a blend of the broadband and narrowband images: R(R and Ha), G(G and OIII), B(B and OIII). The narrowband exposures were taken with lens stopped at f2.8 and camera gain 53, while RGB data was captured at f4.0 and gain 0.

Ha: 30x1200s and 28x2000s (@ f2.8, Gain 53, bin1x1)

OIII: 16x2000s (@ f2.8, Gain 53, bin1x1)

R: 36x300s (@ f4.0, Gain 0, bin1x1)

G: 24x300s (@ f4.0, Gain 0, bin1x1)

B: 24x300s (@ f4.0, Gain 0, bin1x1)

Total exposure: 41.4 hours

The black and white Ha images in Revision B and C show the intricate structure of shocks and diffuse emission that gave this supernova remnant its Veil/Cirrus Nebula name. Fainter features in the outer parts of the nebula correspond to the shock front from the SN blast. The brighter filamentary and diffuse features (like Eastern Veil (NGC 6992, NGC 6995, and IC 1340), Western Veil (NGC 6960), Pickering's Triangle and Southeastern Knot) are due to interaction of the supernova blast wave with interstellar clouds.

Original
B
C
Final
E

B

Description: Ha+NII image

Uploaded: ...

C

Description: Inverted Ha+NII image

Uploaded: ...

E

Description: Adjusted image contrast

Uploaded: ...

Samyang 135 f/2
Camera Lens Astrophotography
Sharpless2 Objects
ZWO ASI183/QHY183

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Status	Advanced success
Started	...
Astrometry.net job	2423710
PixInsight job	O4GBUUHTBHN0P4I1ZTJ0S1FZIQ3QVH3W
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	20h51m22s.92
RA (top/left)	20h59m07s.84
RA (top/right)	20h43m33s.10
RA (bottom/right)	20h43m58s.87
RA (bottom/left)	20h58m53s.30

Dec (center)	+30°33′11″.2
Dec (top/left)	+32°43′15″.2
Dec (top/right)	+32°42′13″.0
Dec (bottom/right)	+28°21′26″.4
Dec (bottom/left)	+28°22′22″.3

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Cygnus Loop widefield HaOIIIRGB

Cygnus Loop widefield HaOIIIRGB

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Cygnus Loop widefield HaOIIIRGB

Cygnus Loop widefield HaOIIIRGB

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