Giotto’s brief encounter, Twenty years ago |
Giotto’s brief encounter, Twenty years ago |
Mar 10 2006, 09:20 AM
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Member Group: Members Posts: 370 Joined: 12-September 05 From: France Member No.: 495 |
Giotto’s brief encounter
http://www.esa.int/esaCP/SEMSZ0NVGJE_index_0.html Twenty years ago, in the night between 13 and 14 March 1986, ESA’s Giotto spacecraft encountered Comet Halley. |
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Nov 14 2009, 08:50 PM
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
I have a question. Can I put here some improved Halley comet images, or do I have to write to dr. H. U. Keller first? There in an information on PDS data set, that the data are copyrighted and the owner of copyright is dr. H. U. Keller. Data are free of charge for scientific purposes. But if I post them here, are they scientific purposes?
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Nov 17 2009, 01:31 PM
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Junior Member Group: Members Posts: 52 Joined: 16-November 06 Member No.: 1364 |
I have a question. Can I put here some improved Halley comet images, or do I have to write to dr. H. U. Keller first? There in an information on PDS data set, that the data are copyrighted and the owner of copyright is dr. H. U. Keller. Data are free of charge for scientific purposes. But if I post them here, are they scientific purposes? A message from Dr. H.U. Keller: Hallo machi (and others), I am really impressed (and not for the first time) what members of the general space community can do with images. The GIF animation impressively shows how small the actual transmitted images (near closest approach) are, only 74 by 74 pixels, and it shows how complex the corrections are for the geometric distortion of the images taken from a rotating spacecraft with a line scanning camera. It also shows that the tracking (autonomous by the computers of the camera) worked very well until Giotto was hit by debris. Here is a movie (6MB) for your viewing pleasure simulating the approach, but made from a composite image where 64 images are inserted in an earlier (large image) image providing more and more resolution around the brightest feature. © 1986-2009 MPS. Finally a word concerning the copyright. The copyright was introduced to control (or prohibit) manipulated images. Publication in a non-profit environment is free and encouraged. So please help to maintain the integrity of the images and the scientific results. Thanks for your interest. Regards, H. Uwe Keller |
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