Sh2 115 Close up and Berkeley 90 Open Cluster (Nicla.Camerin_Maurizio.Camerin)

Sh2 115 Close up and Berkeley 90 Open Cluster

The little-studied cluster Berkeley 90 – III. Cluster parameters
"The open cluster Berkeley 90 is the home to one of the most massive binary systems in the Galaxy, LS III +46∘11, formed by two identical, very massive stars (O3.5 If* + O3.5 If*), and a second early-O system (LS III +46∘12 with an O4.5 IV((f)) component at least). Stars with spectral types earlier than O4 are very scarce in the Milky Way, with no more than 20 examples." https://academic.oup.com/mnras/article/465/1/784/2417483
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Dates: Oct. 10, 2021 · Oct. 22, 2021 · Nov. 4, 2021 · Nov. 5, 2021 · Nov. 6, 2021 · Nov. 29, 2021 · Dec. 3, 2021
Integration: 24h 41' 30"

Sh2 115 catch our attention and we really enjoy the view obtained in this area of the image. The open cluster inside it give an interesting weight and explanation what we are seeing around of this nebula and the tidal forces that modeled all the gases spreading around.

Worked with the Ha and [OIII] extraction and create a green synthetic channel this time using 50% of each extraction. Apply the usual workflow, but before I used in Siril the Histogram Transformation in both extraction results The cropped and final image was less redish and more neutral.

Thanks for visit us, we really appreciate it.

Processed July 2022

https://twitter.com/AstroOtus/status/1547493625755475968

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Status	Advanced success
Started	...
Astrometry.net job	5988707
PixInsight job	57PS9NX31F5MYZTSTJK5GLJ5WKPERXRM
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h34m39s.40
RA (top/left)	20h32m30s.35
RA (top/right)	20h36m38s.95
RA (bottom/right)	20h36m49s.20
RA (bottom/left)	20h32m36s.66

Dec (center)	+46°48′18″.1
Dec (top/left)	+46°27′19″.3
Dec (top/right)	+46°26′10″.3
Dec (bottom/right)	+47°09′08″.3
Dec (bottom/left)	+47°10′31″.6

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