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NGC 6946

Date:5.5.(V,I)/6.5.(B)1995 Time:1:30 UT (V,I); 1:45 UT (B) Exposure:B: 600s; V,I: 1200s
Field of View:13.0' x 10.3' Receiver: HoLiCam, 20482 CCD Filter:B, V, I
Instrument: 1m, f=3680mm Observatory: Hoher List Observer:S. Kohle, T. Credner

© Copyright by the observers

Astronomical Institutes of the University of Bonn

From Colors to Astrophysics:

This color composite made out of exposures in the B, V and I filters represents a view similar to the impression of a naked eye view through a very big telescope. The only difference is that the I filter is sensitive to the near infrared rather than the normal red.

In contrast to NGC 4631,NGC 6946 is a spiral galaxy seen face on . The blue color of the spiral arms is dominated by young massive stars, the red color of the bulge in the center of the galaxy is due to an old population of red giants.

  • The poster at the 1997 meeting of the Astronomische Gesellschaft in Innsbruck.
  • the NGC 6946 page of Hartmut Frommert
  • search for scientific articles using ADS
  • search for more WEB pages using EXCITE