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Contains:  Cocoon nebula, IC 5146
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The Cocoon Nebula (IC 5146), 



    
        

            Josh Woodward
The Cocoon Nebula (IC 5146)
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The Cocoon Nebula (IC 5146)

Technical card


Dates:July 25, 2019July 26, 2019

Frames:
ZWO L 1.25": 221x60" (gain: 75.00) -15C bin 1x1
ZWO RGB 1.25" Filters: 140x180" (gain: 75.00) -15C bin 1x1

Integration: 10.7 hours

Darks: ~60

Flats: ~12

Flat darks: ~25

Avg. Moon age: 23.04 days

Avg. Moon phase: 40.64%

Bortle Dark-Sky Scale: 5.00


Basic astrometry details

Astrometry.net job: 2828675

RA center: 21h 50' 57"

DEC center: +47° 30' 32"

Pixel scale: 3.166 arcsec/pixel

Orientation: 273.077 degrees

Field radius: 1.219 degrees


Resolution: 2223x1656

Locations: backyard, Chico, CA, United States

Data source: Backyard

Description

This is a wide(ish) view of IC 5146. It was captured over the course of five nights. It consists of:
220 x lum - 60s
50 x red - 180s
45 x green 180 s
43 x blue 180s

PREPROCESS

PixInsight
* BLINK to check for glaring anomalies
* SUBFRAME SELECTOR to weed out irregular or high FWHM frames
* Batch Preprocessing FD

PROCESS RGB

PixInsight (Linear)
* Linear Fit with red as reference
* Star Alignment with Lum as reference
* Dynamic Crop with Lum as reference
* ABE on each channel
* Channel Combination
* ABE
* Photometric Color Calibration with G2V as reference
* SCNR at 50%
* TGV Denoise with flattened lum mask
* MMT with strong protection mask of high signal areas

PROCESS LUM
* Dynamic Crop
* RGB Working Space
* ABE
* Deconvolution
* TGV Denoise with flattened mask
* MMT with strong mask to protect high signal areas

PixInsight (Stretched)
* Arcsinh Stretch on lum and RGB
* LRGB Combination
* ACDNR
* SCNR 100%
* HT to brighten image
* Color Saturation with combined range+star mask to reduce saturation (Arcsinh Stretch oversaturated stars)
* HDR Multiscale Transform
* Morphological Transform
* Dark Structure Enhance

PHOTOSHOP CC

* Raw Filter tweaks
* image size (50%)
* Save to jpeg

Comments

Author

j_n_dubya
Josh Woodward
License: None (All rights reserved)
520
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The Cocoon Nebula (IC 5146), 



    
        

            Josh Woodward

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