Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Sh2-103
Pickering's Triangle, lefty7283
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Pickering's Triangle

Pickering's Triangle, lefty7283
Powered byPixInsight

Pickering's Triangle

Equipment

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Acquisition details

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Description

I tried to replicate the colors of my Eastern Veil Nebula photo from last summer (minus the RGB stars), which is another part of the Cygnus Loop that Pickering's Triangle is in. Other than some misshapen stars I'm pretty satisfied with this image. Captured on May 30, June 1, 2, 6, 7, 12, July 11, 13, 14, 15, and 16th, 2020 from a Bortle 6 zone.

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**[Equipment:](https://i.imgur.com/6T8QNsv.jpg)**

* TPO 6" F/4 Imaging Newtonian

* Orion Sirius EQ-G

* ZWO ASI1600MM-Pro

* Skywatcher Quattro Coma Corrector

* ZWO EFW 8x1.25"/31mm

* Astronomik LRGB+CLS Filters- 31mm

* Astrodon 31mm Ha 5nm, Oiii 3nm, Sii 5nm

* Agena 50mm Deluxe Straight-Through Guide Scope

* ZWO ASI-120MC for guiding

* Moonlite Autofocuser

**Acquisition:** 17 hours 40 minutes (Camera at Unity Gain, -15°C)

* Ha- 56x600"

* Oiii- 50x600"

* Darks- 30

* Flats- 30 per filter

**Capture Software:**

* Captured using [N.I.N.A.](https://nighttime-imaging.eu/) and PHD2 for guiding and dithering.

**PixInsight Processing:**

* BatchPreProcessing

* SubframeSelector

* StarAlignment

* [Blink](https://youtu.be/sJeuWZNWImE?t=40)

* ImageIntegration

* DrizzleIntegration (2x, VarK=1.5)

* DynamicCrop

* AutomaticBackgroundExtraction

* Deconvolution (EZ decon star mask used with self made lum mask)

* EZ denoise

* EZ soft stretch per channel

* ChannelCombination to combine Ha and Oiii (HOO > RGB)

* AutomaticBackgroundEXtraction

* Extract L > LRGBCombination (chrominance noise reduction

* [Curves](https://i.imgur.com/YcKQRqM.jpg)Transformations for lightness, hue and saturation

* ACDNR

* MMT noise reductiom

* LocalHistogramEqualization

* EZ Star reduction 2x

* HDRMultiscaleTransform (masked to apply to the brightest parts of the nebula)

* More curves

* Resample to 80%

* Annotation

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