M57 in Lyra

Updated : 12 June 2006.

Click on image to get larger size image (full res).
M57_20(R+L)(R+Ha)GB_Karel_Josch.jpg (4500 kB)

  • CCD : STL11000 ABG
  • Exposure time : 690 min H-a and 127:70:70:80 min LRGB (total 17.5 h)
  • Date and Time : May and June 2006
  • Instrument : 40cm @ f/8
  • Focal length : 3260 mm
  • FWHM : about 3 arcsec
  • Filters : Astronomik H-alpha (6nm) and SBIG LRGB filters
  • Image processing : Image processed by Karel Teuwen
  • Problems/comments : Collaboration between Karel (LRGB) and myself (H-alpha). Imaged in Turnhout and Mol, Belgium.

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