Nebula between Sadr and Eta Cygni (Yuichi Kawamoto)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Crescent nebula · IC 1311 · IC 1318 · NGC 6871 · NGC 6883 · NGC 6888 · NGC 6914 · Part of the constellation Cygnus (Cyg) · The star 22Cyg · The star 25Cyg · The star 27Cyg · The star 28Cyg · The star 29Cyg · The star 34Cyg · The star 35Cyg · The star 47Cyg · The star Sadr (γCyg) · The star ηCyg · gamma Cyg nebula

Nebula between Sadr and Eta Cygni, Yuichi Kawamoto

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Nebula between Sadr and Eta Cygni

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Nebula between Sadr and Eta Cygni

Cygnus nebulous area between the Sadl and Eta Cyg, from the famous bright clusters around Sadl down to southern, relatively faint, widely spread behind the star cloud.

Wide field like this is typically planned with camera lenses, but fine star cloud cannot be resolved with shorter lenses. I then took my 300mm class Borg and planned a six panel mosaic to acquire details and yet wide field.

Cygnus in April was at low altitude then quality of images were not satisfactory yet for the long exposure. Waiting for Summer and Autumn to get better condition, I want to expand its plan to wider area to cover all nebula around the area.

F

Description: A-F are original subframes of L image, to identify coordinates for alignments thanks to astrobin's platesolving :)

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I

Description: First attempt of mosaic composition of L subframes. Corrected some unmatched star positions between Cyg2 and Cyg4

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J

Description: Combined LRGB with RGB images obtained from DSLR.

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L

Description: Trial of enhancement with first LRGB, resolution reduced by 1/2 from the original mosaic image of 8,238x9,778.

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M

Description: LRGB with DSLR RGB image mixed for better mosaic composition. Star sharpness not satisfactory.

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N

Description: Revised L reprocessing flatness of individual subframes.

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O

Description: Final revision. Image size reduced to 1/2 from original mosaic image of 8,275x9835.

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Status	Basic success
Started	...
Astrometry.net job	1672181
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Nebula between Sadr and Eta Cygni

Nebula between Sadr and Eta Cygni

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Nebula between Sadr and Eta Cygni

Nebula between Sadr and Eta Cygni

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M

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