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Radon Transform

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Astronomers Outsmart Starlink to Protect Hubble Observations

Originally Published 2 years ago — by Inverse

Astronomers have developed a new tool to identify and remove satellite trails in Hubble images using a mathematical "trick" called Radon Transform. The tool identifies where the bad pixels are and the extent to which they affect the image and then calls them out. The software tool sums up all the light along every possible straight path across a given HST image, making it "pop out" in the transformed image. This approach works even for those that are very faint in the original image. Ground-based telescopes will also need to work out similar mathematical workarounds to fix images after the fact.

science astronomy astronomy ground-based-telescopes hubble-space-telescope image-calibration radon-transform satellite-trails

Hubble Images Now Clearer with New Software.

Originally Published 2 years ago — by PetaPixel

The Hubble Space Telescope's images are increasingly being spoiled by satellites, but researchers at the Space Telescope Science Institute have developed new software to mitigate the issue and remove the troublesome satellites from photos. The new tool identifies satellite trails in photos captured by Hubble’s Advanced Camera for Surveys using an image analysis technique called “Radon Transform.” The software is up to ten times more sensitive than prior software and identifies “roughly twice” as many trails as its previous studies.

science space-technology hubble-space-telescope image-analysis radon-transform satellite-interference space-technology space-telescope-science-institute