Sh2-112, Sh2-115, Berkeley 90, and Sh2-116 (Abell 71, PK 085+4.1) (Gary Lopez)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: PK085+04.1 · Sh2-112 · Sh2-115 · Sh2-116

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Sh2-112, Sh2-115, Berkeley 90, and Sh2-116 (Abell 71, PK 085+4.1)

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Sh2-112, Sh2-115, Berkeley 90, and Sh2-116 (Abell 71, PK 085+4.1)

Near the North America Nebula is a region rich with deep-sky objects. At the center of this image is an emission nebula cataloged Sh2-115, an area of hydrogen, sulfur, and oxygen gases surrounding an open star cluster, Berkeley 90. To the right is what appears to be a bright blue planetary nebula that was originally cataloged Abell 71 (PK 085+4.1). Upon further analysis the object is now consider part of the Sh2-115 complex and is cataloged Sh-116. On lower left of the image is Sh2-112, a star-forming region of gases and dust honeycombed with channels and Bok globules.

The data for this image were collected in 2018 using an SW Esprit 100 (FL 550mm) and in 2020 using a WO GT71 (FL 336mm). In other images where I combined data acquired using telescopes with different focal lengths, the wide field data served for color mapping and the narrow field provide structure and FOV via a luminance mask. In this image, however, I reversed that approach. The FOV of this image is the wide field data. The narrow field provides the detailed structure of Sh2-115 and Sh2-116. I used a combination of Pixinsight and Photoshop to combine the two data sets and feather out the seam between the images.

SF Bay Area Imagers
ZWO ASI1600MM/QHY163M
Suburban Astrophotography
Fine Art Astrophotography
Sharpless2 Objects

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Status	Advanced success
Started	...
Astrometry.net job	4033347
PixInsight job	2I9TGZAXH6M6FTGXDVG0ZOTM7RKA17CG
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	20h34m12s.58
RA (top/left)	20h43m57s.78
RA (top/right)	20h34m41s.60
RA (bottom/right)	20h24m15s.70
RA (bottom/left)	20h33m45s.28

Dec (center)	+46°50′53″.7
Dec (top/left)	+46°15′43″.9
Dec (top/right)	+48°37′22″.2
Dec (bottom/right)	+47°22′54″.4
Dec (bottom/left)	+45°04′26″.4

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Sh2-112, Sh2-115, Berkeley 90, and Sh2-116 (Abell 71, PK 085+4.1)

Sh2-112, Sh2-115, Berkeley 90, and Sh2-116 (Abell 71, PK 085+4.1)

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Sh2-112, Sh2-115, Berkeley 90, and Sh2-116 (Abell 71, PK 085+4.1)

Sh2-112, Sh2-115, Berkeley 90, and Sh2-116 (Abell 71, PK 085+4.1)

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