File:Phot-13b-99-hires.jpg

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Original file ‎(1,152 × 1,277 pixels, file size: 2.55 MB, MIME type: image/jpeg)

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Description
English: This "(V-I) colour-index image" was produced in the same way as Photo 13a/99. It is based on two other exposures, taken on the same date, through a visual-green filter (V) and a near-infrared-red filter (I), respectively. The exposure time was 3 min for both. The field size and orientation is the same. The round, dark spot at the upper left is an artefact. Dust lanes in the spiral arms absorb more green light and therefore appear redder than their surroundings. In this differential image, they are seen as dark regions. They are exceptionally sharp and particularly strong in the inner part of the galaxy.

ID: phot-13b-99

Press Release: 05/99

Long Caption: http://www.eso.org/public/outreach/press-rel/pr-1999/phot-13-99.html

Object: NGC 1232

Telescope: UT1/Antu

Instrument: FORS1

Size: 1152x1277

Credit: ESO
Date
Source http://www.eso.org/gallery/v/ESOPIA/Galaxies/phot-13b-99-hires.jpg.html
Author ESO
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Their website states: "Unless specifically noted, the images, videos, and music distributed on the public ESO website, along with the texts of press releases, announcements, pictures of the week, blog posts and captions, are licensed under a Creative Commons Attribution 4.0 International License, and may on a non-exclusive basis be reproduced without fee provided the credit is clear and visible."
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This file is licensed under the Creative Commons Attribution 4.0 International license.
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w:en:Creative Commons
attribution
This file is licensed under the Creative Commons Attribution 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.

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Date/TimeThumbnailDimensionsUserComment
current20:24, 2 May 2009Thumbnail for version as of 20:24, 2 May 20091,152 × 1,277 (2.55 MB)Fabian RRRR (talk | contribs){{Information |Description={{en|1=This "(V-I) colour-index image" was produced in the same way as Photo 13a/99. It is based on two other exposures, taken on the same date, through a visual-green filter (V) and a near-infrared-red filter (I), respectively.

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