Sh2-115: Emission nebula in Cygnus (Jonathan W MacCollum)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: HD195711 · HD196018 · HD196090 · HD196178 · HD196196 · LBN 352 · LBN 357 · LBN 358 · LBN 362 · LBN 367 · LBN 368 · LBN 372 · LBN 375 · LBN 376 · PK085+04.1 · Sh2-115 · Sh2-116

Sh2-115: Emission nebula in Cygnus

Link: https://projects.darkflats.com/ImagingLog/950mm/sh2-115%20Take%202.html

Sh2-115: Emission nebula in Cygnus

Link: https://projects.darkflats.com/ImagingLog/950mm/sh2-115%20Take%202.html

**Sh2-115 - Emission nebula in Cygnus**
* Orion 8in f4.9 Newt with TSWynne68 | QHY600m | Chroma: RGB Ha5nm Oiii3nm | Antlia: L Sii3.5nm
Data taken over 13 Nights between 2022-08-03 and 2022-10-09
Integration time: 39hr
* 5nm Ha: 10hr48m | 3nm Oiii: 10hr 18m | 3.5nm Sii: 12hr 12m
* L: 1hr 16m | R: 1hr 39m | G: 1hr 30m | B: 1hr 21m
Processing:
* Lightly Process the LRGB image using DBE, PCC, then stretched with GHS (RGB/k mode, then Color mode)
* Independently stretch and contrast enhance each Ha, Sii and Oiii images including Starnet, Noise-Reduction, GHS, HDR, LHE, MMT Sharpening and Curves
* Produce a starless SOO using channel combination
* Produce a starless SHO using channel combination
* Extract the luminance from SHO to apply as detail layer to the SOO image
* Blend the shadows of the SOO with the highlights from the SHO image ``SOO*~SHO_L+SHO*SHO_L``
* Add the LRGB to the SOOBlendSHO [NightPhotons style](https://www.nightphotons.com/guides/star-addition)

```
mtf(.025,
mtf(.975, SOOBlendSHO)+
mtf(.995, RGB))
```

* Apply one final contrast S-Curve

Imaging and Processing Log [Here](https://projects.darkflats.com/ImagingLog/950mm/sh2-115%20Take%202.html)

Final
Original
B

B

Title: Starless SOO blend SHO before adding LRGB

Description: Starless SOO blend SHO before adding LRGB

Uploaded: ...

/r/astrophotography

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Status	Advanced success
Started	...
Astrometry.net job	6426693
PixInsight job	TFX2OSZVGUZ5XS11CZNW21UAR8PUOZ51
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h33m45s.33
RA (top/left)	20h32m19s.64
RA (top/right)	20h41m12s.67
RA (bottom/right)	20h35m16s.13
RA (bottom/left)	20h26m22s.38

Dec (center)	+46°59′31″.5
Dec (top/left)	+45°43′30″.6
Dec (top/right)	+47°13′31″.1
Dec (bottom/right)	+48°15′22″.4
Dec (bottom/left)	+46°43′43″.9

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Sh2-115: Emission nebula in Cygnus

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