Image:Open-cluster-Messier-7.jpeg

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Description

Open star cluster Messier 7 also called Ptolemy Cluster, photographed at La Palma, Roque de los Muchachos (Degollada de los Franceses). Photo taken the following equipement:

  • Camera/Telecope: Pentax SDHF 500 6.7/500 on GP/DX, tracing ST4 at 600mm (Sonnar 4/300 with 2x tele converter)
  • Exposure: 40 min
  • Film: Kodak E200 35mm (Push to 600 ASA)
  • Scanner: Scan service
  • Processing: Removed vignetting, colour and contrast correction.
  • additional remark: faintest object visible at 6.5 mag
Deutsch: Der offene Sternhaufen Messier 7
Source

Homepage of Oliver Stein
Date

Sept. 2004
Author

Oliver Stein
Permission

Quotation of the permission Oliver Stein gave me in a mail after my call at forum.astronomie.de for a GFDL-free release of astro photos:


GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License".

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