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Hercules eso 1211a by Hugo Buddelmeijer

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Taken by
Hugo Buddelmeijer Hugo Buddelmeijer
Explore score
104
Size
0.22 Gigapixels
Views
3822
Date added
Mar 29, 2012
Date taken
Mar 29, 2012
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Description

From www.eso.org/public/images/eso1211a Will open in a new tab or window/ released under the Creative Commons Attribution 3.0 Unported license.

This new image, taken with the VLT Survey Telescope (VST) shows a wide variety of interacting galaxies in the young Hercules galaxy cluster. The sharpness of the picture and the sheer number of objects captured — across a full square degree — in less than three hours of observations attest to the great power of the VST and its OmegaCAM camera to explore the nearby Universe. This picture has been cropped and does not cover the full VST field of view.

Credit: ESO/INAF-VST/OmegaCAM. Acknowledgement: OmegaCen/Astro-WISE/Kapteyn Institute


Gigapan Comments (3)

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  1. Hugo Buddelmeijer

    Hugo Buddelmeijer (August 02, 2012, 09:45AM )

    The 'Bad Astronomy' blog has a nice post about this image. Some of the red and green lines are identified as asteroids in the comments. However, the large green one is not and might be a satellite. blogs.discovermagazine.com/badastr onomy/2012/03/07/labors-of-the-hercules-cluster&nb sp;Will
open in a new tab or window/

  2. Hugo Buddelmeijer

    Hugo Buddelmeijer (April 12, 2012, 02:49AM )

    @tiga tatton, I think these are satellite trails. The picture is a composite image: different observations are used for the red, green and blue values of the pixels. So there seems to be an object that was moving along the sky during the 'green' observation. (Note the colors are false: what is green in the picture is not necessarily green for our eyes.) These objects are usually satellites. However, those stripes are often longer and uninterrupted (and removed), so it might be something else. Identifying artifacts in images can be very hard in astronomy: how do you tell the difference between something very unusual but really out there and something introduced by us?

  3. tiga tatton

    tiga tatton (March 29, 2012, 02:28PM )

    What are the bright (and faded) green lines?

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