Celestial 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

Equipment

Imaging Telescopes Or Lenses
William Optics Star 71
Imaging Cameras
Atik 460 EX
Mounts
CGEM DX
Accessories
Atik EFW2
Software
CCDWare CCDStack · SequenceGeneratorPro · PHD guiding · photoshop
Guiding Telescopes Or Lenses
Vixen VC 200L
Guiding Cameras
Orion StarShoot AutoGuider

Acquisition details

Basic astrometry details

Astrometry.net job: 468895

RA center: 20h12m25s.9

DEC center: +38°1727

Pixel scale: 3.125 arcsec/pixel

Orientation: -179.952 degrees

Field radius: 1.157 degrees

Resolution: 1800x1965

File size: 1.1 MB

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