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WR134 nebula
(click and scroll on the image for 4K resolution)




Object:            WR134 nebula,  variable Wolf-Rayet star with a huge envelope of Hydrogen and Oxygen bubble in Cygnus.
Telescope:    
  Halpha & Oiii:   Astrograph 400 f/4 Newton.   Paramount ME.  ASI 6200 MM cmos.  Chroma Ha & Oiii filters.
                        Color:               Astrograph  250 f/4 Newton.  Paramount ME.  ATIK 16200 ccd.  Chroma RGB filters
Exposures:        Ha :     70 x 20'   ( 23:20 )
                          Oiii:   115 x 20'   ( 38:20 )
                          R:        20 x  5'   (   1:40 ) 
                          G:        20 x  5'   (   1:40 )  
                          B:        20 x  5'   (   1:40 )
                              Total:    66:40 hours

Resolution:       0.58"/pixel.   Luminance  FWHM after integration: 2.1" 
Date:                August - September  2022
Site:                 
Luminance:  Sagan Observatory      Las Rozas  (Spain)     - mag 4.5 suburban skies -
                        Color:           La Sagra Observatory  Puebla de Don Fadrique (Spain)    - mag 7 professional observatory skies -

Processing (PixInSight):
Bias, Dark & Flat calibration
Local Normalization
DBE
SpectroPhotometric Color Calibration
Starnetv2 for star masks
Histogram stretching
Color saturation adjustments
Morphological Transformation stars reduction
LocalHistogramEqualization