The image of the Horsehead nebula is a combination four images taken
  at NOT with the 1024X1024 Brorfelde CCD camera in the R band in
  October 1994.  The exposure time for each individual exposure is 10
  minutes.  Seeing is around 2 arcsec.  The four images have been binned
  by 2X2 pixels and shifted to their correct places using some stars in
  the field.

         1/3/1995   Kari Nilsson