-
From www.eso.org/public/images/eso1211a
/ 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 objec...-
Stats
- Favorites
- 0
- Comments
- 3
- Snapshots
- Total Views
- 1175
- Explore Score
- 104
GigaPan Comments (3)
Toggle Minimize gigapan_commentHugo 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;
/
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?
tiga tatton (March 29, 2012, 02:28PM )
What are the bright (and faded) green lines?