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You are welcome to use our images for private and non-profit educational purpose if the authorship and copyright is acknowledged by a minimum credit line:

© T. Credner & S. Kohle,

The observers for a particular image might differ and are given in each image description. A corresponding institute or observatory might be quoted below the image data and should be mentioned in addition.

For any other purpose the image authors have to be contacted. For printing quality we have high resolution files available. We are grateful if image requests of publishers and authors contain as much information as possible:

  - requested image
  - author name
  - title and content of publication
  - publisher
  - printed image size (if already known)
  - print run
We will answer as fast as possible!

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Digital Images of the Sky