Wide field (29°x19°) image of Swan (Cyg) constellation in H alpha spectrum line (RGB) (Vladimir Machek)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: IC 5068 · IC 5070 · NGC 6960 · NGC 7000 · North America Nebula · Part of the constellation Cygnus (Cyg) · Pelican Nebula · The star 31Cyg · The star 32Cyg · The star Deneb (αCyg) · The star Gienah (εCyg) · The star Sadr (γCyg) · The star δCyg · The star ηCyg · The star νCyg · The star ξCyg · The star τCyg · Veil Nebula

Wide field (29°x19°) image of Swan (Cyg) constellation in H alpha spectrum line (RGB), Vladimir Machek

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Wide field (29°x19°) image of Swan (Cyg) constellation in H alpha spectrum line (RGB)

Powered byPixInsight

Wide field (29°x19°) image of Swan (Cyg) constellation in H alpha spectrum line (RGB)

The same photo as I uploaded on September 24, 2021 in RGB "true" colour mode. According to Photoshop measurement of my RGB subframes, the vast majority of H+ colour have RGB coordinates is approx 140/0/10. In this way I have processed this image.

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OBJECT: The Swan Constellation (Cyg), FOV 29°x19°.

GEAR: Nikon Z7 Kolari Full Spectrum + Nikkor Z 70-200/2,8 @ 70, Astronomic H+ 9nm Clip in filter, Dew heater strip, sensor pixel scale 12,46 arcsec/px, tracking mount iOptron CEM60EC - 3 star alignment, no auto guiding.

ACQUISITION: July 10, 2021, Struz, CZ, Subexposure 300s, f 2,8, ISO 1600, Interval 20 s, RAW-L, Light 14x, Dark 15x, Bias 20x, Flat 20x, DarkFlats 10x. Total exposure time 70 min. Astronomical twilight, no wind, 10° C, no Moon, Light pollution - Bortle 5.

STACKING AND POST PROCESSING: AstroPixelProcessor , Adobe Photoshop CC 2021 No cropped, image size 3840 x

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Astrometry.net job	5033006
PixInsight job	n/a
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Wide field (29°x19°) image of Swan (Cyg) constellation in H alpha spectrum line (RGB)

Wide field (29°x19°) image of Swan (Cyg) constellation in H alpha spectrum line (RGB)

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Wide field (29°x19°) image of Swan (Cyg) constellation in H alpha spectrum line (RGB)

Wide field (29°x19°) image of Swan (Cyg) constellation in H alpha spectrum line (RGB)

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