Sun through Coronado H-alpha filters

Updated : 1 May 2005.

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bestofall_PS_text.jpg (820 kB)

  • CCD : STL11000M ABG 1x1 binning
  • Exposure time : 0.003 s
  • Date and Time : 01. May 2005, 09:41 UT
  • Instrument : FSQ @ f/38 (SM60)
  • Focal length : ca. 2300 mm (4x Powermate)
  • FWHM : about 0.05 nm (double stacked H-alpha filters)
  • Filters : Astronomik red filter, 90mm and 60mm H-alpha filter
  • Image processing : MAxim V4.10 (image acquisition), Registax (stacking and wavelets)
  • Problems/comments : Further processing in Photoshop (colorized). Image is stack of 9 images. Imaged at my backyard, Mol, Belgium.

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