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Contains:  Veil nebula, Lace-work nebula, Filamentary nebula, NGC 6960, The star 52Cyg
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Western Veil, Pickering's Triangle & The "Funnel", 





    
        

            Min Xie
Western Veil, Pickering's Triangle & The "Funnel"

Western Veil, Pickering's Triangle & The "Funnel"

Technical card

Resolution: 3151x4202

Dates:Aug. 19, 2019Aug. 20, 2019Aug. 21, 2019Aug. 22, 2019Aug. 24, 2019Aug. 25, 2019Aug. 26, 2019Aug. 27, 2019Sept. 3, 2019Sept. 4, 2019Sept. 5, 2019Sept. 6, 2019

Frames:
Astrodon 3nm Ha 31mm: 276x300" (gain: 139.00) -10C bin 1x1
Astrodon 3nm OIII 31mm: 180x300" (gain: 139.00) -10C bin 1x1
Astrodon 3nm SII 31mm: 72x300" (gain: 139.00) -10C bin 1x1
Astrodon E Series Gen II Blue 31mm: 60x60" -10C bin 1x1
Astrodon E Series Gen II Green 31mm: 60x60" -10C bin 1x1
Astrodon E Series Gen II Red 31mm: 60x60" -10C bin 1x1

Integration: 47.0 hours

Darks: ~40

Flats: ~40

Flat darks: ~40

Avg. Moon age: 16.82 days

Avg. Moon phase: 46.19%

Bortle Dark-Sky Scale: 9.00

Mean SQM: 17.96

Temperature: 31.75

Astrometry.net job: 2909301

RA center: 311.867 degrees

DEC center: 31.148 degrees

Pixel scale: 1.708 arcsec/pixel

Orientation: 139.920 degrees

Field radius: 1.246 degrees

Locations: Backyard, Coppell, Texas, United States

Data source: Backyard

Description

This is the third and probably the last summer "All-Backyard" project for 2019 - all data, Ha, S-II, O-III and R/G/B are imaged from my bortle class 9 backyard over 12 nights. The amount of data is about the same as my previous project. But the seeing over these nights were not good at all. I can see the mean values from light sub-frames vary from 20%-30%.

This time, PixInsight was not used for the color blending. Instead, the color combination is done in Photoshop. I am pretty thrilled about how easy this way is - the result changes in real-time when the scroll-bars is moving! Very efficient and instinctive.

Overall, pretty happy about the result. The resolving power of the 85mm refractor really shines. There are actually more details that I believe my processing skills didn't pull out. I decided to post the "full" version and two cropped versions in separate uploads - they all have enough details to be standalone.

The Head of Western Veil & 52Cyg
Junction of Pickering's Triangle and the "Funnel"

Thanks for looking!

Comments are welcome!

Pre-processing of Narrowband Masters

- Calibration / Integration, Astro Pixel Processor
- Deconvolution, PixInsight (Only for H-Alpha)
- MultiscaleMedianTransform (Denoise), PixInsight
- ScreenTransferFunction / HistogramTransformation, PixInsight.

Pre-processing of RGB Masters

- Calibration / Integration, Astro Pixel Processor
- Dynamic Background Extraction, PixInsight
- MorphologicalTransformation, PixInsight
- ScreenTransferFunction / HistogramTransformation, PixInsight.

RGB Combination

- LRGBCombination, PixInsight
- MorphologicalTransformation, PixInsight
- ScreenTransferFunction / HistogramTransformation, PixInsight.

Narrowband Combination

- Color Combination, Photoshop

Narrband & RGB Combination

- Star Layer Combination, Photoshop

Comments

Author

mxcoppell
Min Xie
License: Attribution-NonCommercial Creative Commons
17878
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Revisions

  • Final
    Western Veil, Pickering's Triangle & The "Funnel", 





    
        

            Min Xie
    Original
  • Western Veil, Pickering's Triangle & The "Funnel", 





    
        

            Min Xie
    E

E

Backyard APOD !

Sky plot

Sky plot

Histogram

Western Veil, Pickering's Triangle & The "Funnel", 





    
        

            Min Xie