Sun through Coronado H-alpha filters

Updated : 22 May 2005.

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best_stacked_R3_PS_combtext.jpg (1200 kB)

  • CCD : STL11000M ABG 1x1 binning
  • Exposure time : 0.006 s
  • Date and Time : 22. May 2005, 10:11 UT
  • Instrument : FSQ @ f/19 (SM60)
  • Focal length : ca. 1200 mm (2x Powermate)
  • FWHM : about 0.05 nm (double stacked H-alpha filters)
  • Filters : Astronomik red filter, 90mm and 60mm H-alpha filter
  • Image processing : MAxim V4.11 (image acquisition, now it works again with short exposures), Registax (stacking and wavelets)
  • Problems/comments : Further processing in Photoshop (colorized). Image is stack of 5 images graded with Imageplus V2. Imaged at my backyard through clouds, Mol, Belgium.

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