Sun through Coronado H-alpha filters

Updated : 16 March 2005.

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AGA_Average1000_SUNM20_002_2XD1_-010R_bias_filters_MX_PS.jpg (530 kB)

  • CCD : STL11000M ABG 1x1 binning
  • Exposure time : 0.02 s
  • Date and Time : 15. Mar. 2005, 12:27 UT
  • Instrument : FSQ @ f/17.7 (SM60)
  • Focal length : 1060 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 V4.06 (Kernel and FFT filters)
  • Problems/comments : Further processing in Photoshop (levels, colorized, unscharp mask, contrast). Imaged at my backyard, Mol, Belgium

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