NGC 6894 (Cyg)

Technical data:    This image was done in cooperation with the Capella-Obseratory team and using their 24"f/8-Cassegrain telescope located in Crete/Greece

                           SBIG STL11000 with Custom Scientific-Filterset

                           LRGB exposure times in total (L=6x600s; R=3x600s; G=3x600s; B=3x600s; all unbinned)

                           FWHM of this image is 1,2" in the summed luminance file

                           Authors: Volker Wendel, Josef Pöpsel, Stefan Binnewies, Prof. Dr. Hanns Ruder

Below you can see a previous version done by the Spiegelteam in germany under ligth polluted skies and, as obvious, a bit overprocessed.

Technical data:    12"f/20-Schiefspiegler for Luminance and a 15"f/5 Newtonian for color channels

                           SBIG ST10XME, CFW8 and AO7

                           LRGB (L=10x300s; R=5x300s; G=5x300s; B=4x300s; RGB bin2, AstroDon filters were used)

                          Authors: Bernd Flach-Wilken & Volker Wendel

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