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File: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
Date
Source

Homepage of Oliver Stein

Author Oliver Stein
Permission
(Reusing this file)

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.
w:en:Creative Commons
attribution share alike 		This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
This licensing tag was added to this file as part of the GFDL licensing update.

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Date/TimeThumbnailDimensionsUserComment
current15:25, 25 November 2012Thumbnail for version as of 15:25, 25 November 2012900 × 604 (268 KB)Hawky.diddizLossless optimization
07:46, 24 May 2005Thumbnail for version as of 07:46, 24 May 2005900 × 604 (285 KB)ArnomaneOpen star cluster Messier 7, donated under GFDL by Oliver Stein, Horray :)

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