Hemisphere:  Northern  ·  Contains:  55 Cyg  ·  56 Cyg  ·  57 Cyg  ·  60 Cyg  ·  62 ksi Cyg  ·  B349  ·  B350  ·  B352  ·  B353  ·  B355  ·  B358  ·  IC 5068  ·  IC 5070  ·  IC5068  ·  IC5070  ·  NGC 6997  ·  NGC 7000  ·  NGC6996  ·  NGC6997  ·  NGC7000  ·  North America nebula  ·  Pelican nebula  ·  Sh2-117  ·  The star 55Cyg  ·  The star 56Cyg  ·  The star 57Cyg  ·  The star 60Cyg  ·  The star ξCyg
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North America Nebula and Pelican Nebula in Narrowband, 



    
        

            Nico Carver
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North America Nebula and Pelican Nebula in Narrowband

Imaging telescopes or lenses: Canon 200 mm f/2.8 L II USM

Imaging cameras: ZWO ASI1600MM-Cool

Mounts: Orion Atlas EQ-G

Guiding telescopes or lenses: Orion 50mm Guide Scope with helical focusing

Guiding cameras: QHYCCD 5L-II M

Software: Photoshop CS6  ·  PHD2 Guiding  ·  Main Sequence Software Sequence Generator Pro  ·  Pixinsight 1.8  ·  Cartes du Ciel

Filters: Astrodon Tru-Balance 1.25" 5nm Ha  ·  Astrodon Tru-Balance 1.25" 3nm OIII

Accessory: Shoestring Astronomy EQDIR


Dates:May 26, 2017June 25, 2017

Frames:
Astrodon Tru-Balance 1.25" 3nm OIII: 19x180" (gain: 139.00) -20C bin 1x1
Astrodon Tru-Balance 1.25" 3nm S2: 17x180" (gain: 139.00) -20C bin 1x1
Astrodon Tru-Balance 1.25" 5nm Ha: 20x180" (gain: 139.00) -20C bin 1x1

Integration: 2.8 hours

Avg. Moon age: 1.20 days

Avg. Moon phase: 1.80%

Bortle Dark-Sky Scale: 3.67

Mean SQM: 20.65

Mean FWHM: 20.30


Astrometry.net job: 1638232

RA center: 20h 56' 42"

DEC center: +44° 13' 23"

Pixel scale: 3.587 arcsec/pixel

Orientation: -1.909 degrees

Field radius: 2.769 degrees


Resolution: 3400x4400

Data source: Traveller

Description

Used the SHO-AIP script in PixInsight.

Comments

Author

2ghouls
Nico Carver
License: None (All rights reserved)
7385
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Revisions

    North America Nebula and Pelican Nebula in Narrowband, 



    
        

            Nico Carver
    Original
  • Final
    North America Nebula and Pelican Nebula in Narrowband, 



    
        

            Nico Carver
    B
    North America Nebula and Pelican Nebula in Narrowband, 



    
        

            Nico Carver
    C
    North America Nebula and Pelican Nebula in Narrowband, 



    
        

            Nico Carver
    D

B

Description: "Print" version. Since prints always come out darker than how I see them on the screen due to the inherent differences between subtractive vs additive color, I always bring up the exposure a bit in Photoshop before printing. When I did that with this photo, it revealed some interesting structures (at least on screen, they were mostly lost in the print). The trade-off to raising the levels is that it made some of the color transitions more blocky (less smooth). It is probably revealing the limitation of only 3 hours of integration on this so far. Anyways, if you are reading this I would love to hear your thoughts on this photo and/or calibrating astrophotos for printing.

C

Description: Using the Selective Color tool in Photoshop. A more traditional Gold and Blue look.

D

Description: A more "natural" look I think by shifting towards red / magenta. Might be my favorite so far. What do you think?

Sky plot

Sky plot

Histogram

North America Nebula and Pelican Nebula in Narrowband, 



    
        

            Nico Carver