Sun through Coronado H-alpha filters

Updated : 28 January 2006.

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AGA_Average1000_SUN001-2XD-100C_RX_PS.jpg (700 kB)

  • CCD : STL11000 ABG
  • Exposure time : 0.01 s
  • Date and Time : 28. January 2006, 12:35 UT
  • Instrument : FSQ @ f/13 (SM90)
  • Focal length : ca. 1200 mm (2x Powermate)
  • FWHM : about 0.05 nm (double stacked H-alpha filter)
  • Filters :
  • Image processing : Photoshop
  • Problems/comments : Further processing in Registax (wavelets) and Photoshop (colorized). Best image out of several graded with Imageplus V2.75. Imaged at my backyard in Mol, Belgium.

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