Timeline for What is the "lost light" in this unusual Hubble Deep Sky image?
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
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| Jan 25, 2019 at 21:19 | comment | added | Peter Erwin | "In the space between the galaxies, the image processing gives garbage results (the white areas)" -- the white isn't quite "garbage", it's just the faintest parts of the image (no extended light from the bright galaxies). It will be dominated by Poisson noise, so there won't be much useful information. | |
| Jan 25, 2019 at 21:18 | comment | added | Peter Erwin | "Basically they're trying to remove all sources of noise from the image" -- that's not actually possible. What they're trying to do is remove systematic instrumental variations due to differences in the sensitivity of different parts of the detector and differences in how the optics distribute the light. If you don't do this, you'll have an image with distortions in the brightness that aren't due to the actual astronomical sources. | |
| Jan 25, 2019 at 17:31 | comment | added | Hobbes | I've made an attempt at summarizing the paper, but this is far outside my expertise. | |
| Jan 25, 2019 at 17:29 | history | edited | Hobbes | CC BY-SA 4.0 |
added more info
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| Jan 25, 2019 at 16:27 | history | answered | Hobbes | CC BY-SA 4.0 |