The Dividing Cell Nebula

A.K.A. NGC6888 - Crescent Nebula in Cygnus

Uploaded 10/18/09

Select an image size for a larger view: 800 x 600 1290 x 960 1600 x 1200

This is the RGB data ONLY.

There are few objects in the sky as amazing as a hot OB type star blowing huge amounts of hydrogen at a high velocity into the interstellar medium. The hot stellar wind that drives this nebula is just below center, the 7.2 magnitude type O4 known as HD 192163.These object known as Wolf-Rayet Bubbles are rare in the sky, and this one is amongst the best. Also known as Sharpless 2-105, this bubble is 18 arcminutes in size.

Instrument: 12.5" f/5 Home made Newtonian Mount: Astrophysics 1200 QMD CCD Camera: SBIG 10XME NABG with Enhanced Water Cooling Guider: Meade DSI Pro w/Lumicon Newt Easy Guider Exposure: RGB = 90:90:90 = 4.5 Hours Total AstroDon RGB Combine Ratio: 1: 1.05: 1.2 Location: Payson, Arizona, Elevation: 5150 ft. Sky: Seeing FWHM = 10 arcsec (Maxim DL - 10min subframe), Transparency 8/10 Outside Temperature: 55 F CCD Temperature: -30 C Image Processing Tools: Maxim DL: Calibration, deblooming (Starizona Debloomer), aligning, stacking PixInsight: Curves, Deconvolution Photoshop CS2: Curves, Color Correction, Gradient removal (Grad Xterminator), Cleanup HOME GALAXIES EMISSION NEBS REFLECTION NEBS COMETS GLOBULARS OPEN CLUST PLANETARIES LINKS