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Junction of Pickering's Triangle and the "Funnel", 



    
        

            Min Xie
Junction of Pickering's Triangle and the "Funnel"
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Junction of Pickering's Triangle and the "Funnel"

Technical card

Imaging telescopes or lenses: QHYCCD PoleMaster  ·  Takahashi FSQ-85EDP

Imaging cameras: ASI1600mm Pro

Mounts: Astro-Physics Mach1GTO CP3

Guiding telescopes or lenses: QHYCCD QHYOAG-M

Guiding cameras: QHYCCD QHY5II-M

Focal reducers: Takahashi Flattener 1.01x

Software: ProDigital Software StarSpikes Pro 4  ·  StarNet++  ·  Adobe Photoshop 2019 CC  ·  Astro Pixel Processor  ·  Sequence Generator Pro  ·  PixInsight 1.8 Ripley

Filters: Astrodon 3nm SII 31mm  ·  Astrodon 3nm OIII 31mm  ·  Astrodon 3nm Ha 31mm  ·  Astrodon E Series Gen II Blue 31mm  ·  Astrodon E Series Gen II Red 31mm  ·  Astrodon E Series Gen II Green 31mm

Accessory: PrimaLuceLab Sesto Senso Robotic Focusing Motor  ·  ZWO EFW  ·  Kingdel NC860 (i7-8550U)


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" (gain: 0.00) -10C bin 1x1
Astrodon E Series Gen II Green 31mm: 60x60" (gain: 0.00) -10C bin 1x1
Astrodon E Series Gen II Red 31mm: 60x60" (gain: 0.00) -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: 31.67


Basic astrometry details

Astrometry.net job: 3248749

RA center: 20h 48' 56"

DEC center: +31° 29' 56"

Pixel scale: 1.294 arcsec/pixel

Orientation: 139.312 degrees

Field radius: 0.832 degrees


Resolution: 3928x2455

Locations: Backyard, Coppell, Texas, United States

Data source: Backyard

Description

Comparing to the head of the NGC 6960, area the Pickering's Triangle that connecting to the "Funnel" gives more peaceful and smooth feeling. Subtle but strong Ha and O-III signals provide lots of beautiful details. Not sure if I did a good enough job here. The final result seems not as smooth as I thought. Planning on using S-II signal data to add one more layer of color blending. Sadly, it didn't help. Possibly I didn't have enough S-II time. The full version could be found here: Western Veil, Pickering's Triangle & The "Funnel".

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
5348
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Junction of Pickering's Triangle and the "Funnel", 



    
        

            Min Xie