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Contains:  IC 5070, NGC 7000, North America nebula, Pelican nebula, The star 56Cyg, The star 57Cyg
Getting plate-solving status, please wait...

Dark Molecular Cloud in NGC 7000

Technical card


Dates:July 15, 2019July 16, 2019July 17, 2019July 18, 2019July 19, 2019July 20, 2019July 21, 2019

Frames:
Astrodon 3nm Ha 31mm: 60x300" (gain: 139.00) -10C bin 1x1
Astrodon 3nm OIII 31mm: 72x300" (gain: 74.00) -10C bin 1x1
Astrodon 3nm SII 31mm: 72x300" (gain: 139.00) -10C bin 1x1
Astrodon E Series Gen II Blue 31mm: 120x30" (gain: 74.00) -10C bin 1x1
Astrodon E Series Gen II Green 31mm: 120x30" (gain: 74.00) -10C bin 1x1
Astrodon E Series Gen II Red 31mm: 120x30" (gain: 74.00) -10C bin 1x1

Integration: 20.0 hours

Darks: ~40

Flats: ~40

Bias: ~60

Avg. Moon age: 16.22 days

Avg. Moon phase: 94.11%

Bortle Dark-Sky Scale: 9.00

Mean SQM: 18.00

Temperature: 31.00


Basic astrometry details

Astrometry.net job: 3248588

RA center: 20h 55' 58"

DEC center: +43° 47' 16"

Pixel scale: 1.708 arcsec/pixel

Orientation: 0.637 degrees

Field radius: 1.332 degrees


Resolution: 4520x3330

Locations: Backyard, Coppell, Texas, United States

Data source: Backyard

Description

This is an "All-Backyard" project - all data from my bortle class 9 backyard under the moon, including Ha, S-II, O-III and R/G/B star layers. It took 7 nights to collect all the data for this project. It's quite unusual - one whole week with clear night sky. Right after I failed miserably trying to capture some data for the SH2-129/Ou4. Now I do admit that some targets are not practical for backyarders.

Learned quite a lot from imaging and processing the RGB stars. Intentionally, the stars are decreased a lot to expose more nebulosity. Three versions are made and uploaded - star spikes, no spikes and no stars. Don't know why one is better.

Comments are welcome!
Thinking about Western Veil as the next target.

Pre-processing of Narrowband Masters

- Calibration / Integration, Astro Pixel Processor
- Deconvolution, PixInsight (Only for H-Alpha)
- MultiscaleLinearTransformation (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

- PixelMath, PixInsight
- ScreenTransferFunction / HistogramTransformation, PixInsight.

Narrband & RGB Combination
- Star adjustment, Lightroom
- Final Touch-up, Photoshop

Comments

Author

mxcoppell
Min Xie
Like

Revisions

B

Description:Less spikes...

C

Description:Starless...

Sky plot

Sky plot

Histogram

Dark Molecular Cloud in NGC 7000, 



    
        

            Min Xie