Sun through Coronado H-alpha filters

Updated : 03 February 2005.

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sun_m10_003_-027c4xd1_IP_PS_red.jpg (120 kB)

  • CCD : STL11000M ABG 1x1 binning
  • Exposure time : 0.003 s
  • Date and Time : 22. Jan. 2005
  • Instrument : FSQ @ f/23.55 (SM90)
  • Focal length : 2120 mm (4x Powermate)
  • FWHM : about 0.07 nm (stacked H-alpha filters)
  • Filters : Astronomik clear filter, 90mm H-alpha filter
  • Image processing : MAxim V4.06 and Imageplus V2
  • Problems/comments : Further processing in Photoshop. Image was done at my backyard, Mol, Belgium

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