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Contains:  NGC 6997, NGC 7000, North America nebula, The star 57Cyg, The star ξCyg
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North America Nebula (NGC7000), 



    
        

            JDJ
North America Nebula (NGC7000)
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North America Nebula (NGC7000)

Technical card


Dates:Aug. 29, 2019Sept. 3, 2019

Frames:
Optolong Ha 12nm 2": 29x180" ISO400 bin 2x2
Orion Skyglow 2" Filter: 39x180" ISO200 bin 2x2

Integration: 3.4 hours

Avg. Moon age: 16.55 days

Avg. Moon phase: 11.96%


Basic astrometry details

Astrometry.net job: 3118535

RA center: 20h 58' 46"

DEC center: +44° 18' 0"

Pixel scale: 4.167 arcsec/pixel

Orientation: 4.076 degrees

Field radius: 2.050 degrees


Resolution: 1948x2959

Locations: Home, Silver Spring, Maryland, United States

Data source: Backyard

Description

Imaged the NGC7000, the North America Nebula, towards the end of this past summer from my backyard in the northern suburbs of Washington, DC. This turned out to be a great target for me thanks to high declination (away from the worst of the light pollution to my south) and great H-alpha signal which really shines with the modified DSLR. Imaged in RGB and NB Ha to generated final NBRGB image.

Imaged with WO GT81 at F4.7 (382 mm focal length) using Flat6A II field flattener/0.8x reducer, Orion Skyglow filter & Optolong 12nm Ha filter, and full spectrum modified Nikon D5300.

NBRGB Version (D=Final):
NBRBG image generated from OSC RGB data and H-alpha NB data using the Pixinsight NBRVB-AIP script. Ha in Red set to 50%. I like the results from this script better than the result from the NBRGBCombination script.

NBRGB Version (Rev C):
NBRBG image generated from OSC RGB data and H-alpha NB data using the Pixinsight NBRGB combination script. Red was augmented by H-alpha data with a scale factor of 5.0.

RGB Version:
Pre-processed using PixInsight Batch Pre-Processing (BPP) script. Images calibrated using darks, bias, and flats. Stacked 39 subs (180 sec at ISO 200) for a total integration time of ~2 hours. Post-processed in Pixinsight: Cropped, gradient removal with ABE, MLT for noise reduction, Background Neutralization, Color Calibration, SCNR, stretched using Arcsinh then Histogram Transformation Tool, Curves Transformation, HDR transform, Local histogram transform, and Color Saturation boost.

H-alpha NB Version:
See: https://astrob.in/z5ikxy/0/

Comments

Author

JDJ
JDJ
License: None (All rights reserved)
840
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Revisions

  • North America Nebula (NGC7000), 



    
        

            JDJ
    Original
  • North America Nebula (NGC7000), 



    
        

            JDJ
    B
  • North America Nebula (NGC7000), 



    
        

            JDJ
    C
  • Final
    North America Nebula (NGC7000), 



    
        

            JDJ
    D

B

Description: Binned 2x for NBRGB combination with Ha data

C

Description: NBRGB Version

D

Description: NBRGB version created from RGB and Ha data using the NBRVB-AIP script in PixInsight.

Sky plot

Sky plot

Histogram

North America Nebula (NGC7000), 



    
        

            JDJ