Butterfly nebula (Constelletion Cygnus)

La nébuleuse du papillon dans la constellation du Cygne  (IC 1318)

>>>>>> To a labeled and annoted image of the Butterfly nebula (IC 1318)

DESCRIPTION

 

The butterfly nebula is a two-lobed nebular object that, when viewed in visible light or in false color images, takes on an apparent structure resembling the appearance of a butterfly.
IC 1318 nebula is a large area of emission nebulosity around Sadr, Gamma Cygnii, the brightest star in this image. The two sections of nebulosity to the left of Gamma are called the Butterfly Nebula and have the catalog designation of IC 1318. LDN 889 is the large area of dark nebulosity that separates the two halves of the Butterfly Nebula, and B 343 is the small but very dense dark nebula surrounded by the clouds of nebulae on the right side of the image. This is a large area of emission nebulosity around Sadr, Gamma Cygnii, the brightest star in this image.
Credit : APOD and Wikipedia informations

 

ACQUISITION

   
 

Date

  13, 15,17 Juillet 2008 – Lozère, France
 

Telescope/Optics

  Takahashi FSQ 106ED
 

Mount

  Takahashi EM200
 

Camera CCD

  SBIG STL 4020M
 

Focuser

  Robofocus/FocuxMax
 

Filters

  Ha/SII/OIII Astrodon filters
 

Guidage

  Yes, FS60C remote guiding head SBIG
 

IMAGING PROCESS

   
 

Exposures

 

Ha(28*5min) SII(26*5min) OIII(37*5min)
Total : 8hOut temperature : 8°C. In CCD temperature : -25°

 

Softwares for acquisition

  Robofocus, Focusmax, CCDsoft V5, TheShy6 Pro, CCDAP 3 Pro, CCDInspector
 

Softwares for digital image processing

 

Calibration, Registration, Color stack with CCDstack 1.0 (CCDIS plug-in). Level and curves adjustements with Photoshop CS3. Final processing with PIXINSIGHT 1.2


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