Sun through Coronado H-alpha filters

Updated : 29 March 2005.

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sun_04m15_4xd1-regis_wavelet_image1-11C_V2_G_flat_MX_PS.jpg (1000 kB)

  • CCD : STL11000M ABG 1x1 binning
  • Exposure time : 0.04 s
  • Date and Time : 26. Mar. 2005, 14:30 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 clear filter, 90mm and 60mm H-alpha filter
  • Image processing : MAxim V4.08 (artifical flat reduction), Registax (stacking and wavelets)
  • Problems/comments : Further processing in Photoshop (blurring for artifical flat, levels, colorized). Image is stack of 11 images dithered randomly by moving the mount. Imaged at my backyard, Mol, Belgium.

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