Hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  IC 5068  ·  IC 5070  ·  M 39  ·  NGC 7000  ·  NGC 7092  ·  North America Nebula  ·  Part of the constellation Cygnus (Cyg)  ·  Pelican Nebula  ·  The star 31Cyg  ·  The star 32Cyg  ·  The star 63Cyg  ·  The star Deneb (αCyg)  ·  The star Sadr (γCyg)  ·  The star νCyg  ·  The star ξCyg  ·  The star σCyg  ·  The star τCyg  ·  The star υCyg
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Deneb, Sadr, North America nebula wide field, 



    
        

            Marzo Varea
Deneb, Sadr, North America nebula wide field
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Deneb, Sadr, North America nebula wide field

Getting plate-solving status, please wait...
Deneb, Sadr, North America nebula wide field, 



    
        

            Marzo Varea
Deneb, Sadr, North America nebula wide field
Powered byPixInsight

Deneb, Sadr, North America nebula wide field

Technical card

Imaging telescopes or lenses: Sony Carl Zeiss Vario Sonnar T* 1,8-4,9/10,4-37,1

Imaging cameras: Sony DSC-RX100 II

Mounts: Sky-Watcher Star Adventurer Mini

Software: François Meyer, team free-astro Siril  ·  M27trognondepomme SiriLic


Dates:Aug. 16, 2018

Frames: 15x30" (7' 30") ISO3200

Integration: 7' 30"

Darks: ~40

Avg. Moon age: 5.60 days

Avg. Moon phase: 31.49%

Bortle Dark-Sky Scale: 5.00


Basic astrometry details

Astrometry.net job: 4069021

RA center: 20h 50' 31"

DEC center: +45° 12' 21"

Pixel scale: 13.794 arcsec/pixel

Orientation: 1.768 degrees

Field radius: 12.663 degrees


Resolution: 3672x5496

Locations: Ladera, Alcañiz, Aragón, Spain

Data source: Traveller

Description

A wide field centered between NGC7000 and Deneb. M29 and M39 are included. A too short exposure, as it was the first light (first track?) session of my Star Adventurer Mini and I took images of too many targets (including my first upload here, "Sagitta, Vulpecula").
Camera settings: focal length 37.1 mm (full frame equivalent 100 mm), f:4.9, ISO 3200; high ISO noise correction on (rookie mistake).
This is the first version I now deem half-decent. Preprocess: all fifteen lights, no bias or flats, forty darks with dark optimization, cosmetic correction (sigma 3, 3). Stacking: mean with rejection (winsorized sigma 3, 3). Postprocess: subtractive background extraction, green noise removal, photometric color calibration, color saturation increase, Asinh transformation, histogram transformation.
Coming soon(ish), I hope, although don't dare to expect because I am lazy and I suspect flats are tricky: using flats to remove those two pesky fake dark nebulae to the north and what I think is overcorrection of vignetting in the background extraction step.

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