Hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent nebula  ·  IC 4996  ·  NGC 6888
Crescent nebula in bicolor, 



    
        

            Bruce
Crescent nebula in bicolor
Powered byPixInsight
Crescent nebula in bicolor, 



    
        

            Bruce
Crescent nebula in bicolor
Powered byPixInsight

Technical card

Imaging telescopes or lenses: William Optics Star 71

Imaging cameras: Atik 460 EX

Mounts: CGEM DX

Guiding telescopes or lenses: Vixen VC 200L

Guiding cameras: Orion StarShoot Autoguider

Software: PHD guiding  ·  SequenceGeneratorPro  ·  photoshop  ·  CCDStack 2+

Accessory: Atik EFW2



Basic astrometry details

Astrometry.net job: 468895

RA center: 20h 12' 25"

DEC center: +38° 17' 27"

Pixel scale: 3.125 arcsec/pixel

Orientation: -179.952 degrees

Field radius: 1.157 degrees


Resolution: 1800x1965

Locations: Meadowlark Ridge Observatory, New Glarus, Wisconsin, United States

Description

This image was developed from Ha, OIII & RGB data. RGB was used only for star color.

Exposure: HaIII:R:G:B = 180m:60m:60:60:60 (RGB bin2x2)

Color mapping: Red:Ha Green: 80% OIII / 20& Ha Blue: OIII

Image taken July 3 & 4, 2014

Comments

Sky plot

Sky plot

Histogram

Crescent nebula in bicolor, 



    
        

            Bruce