EECS 351 Fall 2024 Final Project - Owen Sayer, Alex Bossio, Ian Steele, Nathan Newman
The James Webb Space Telescope (JWST) is the current state-of-the-art space telescope run by NASA. It is used to capture images of our universe and to explore the science behind its formation. In many of the images captured by the JWST, we can see a hexagonal pattern of light coming off of bright stars due to diffraction (explained more here). While these patterns are very interesting and can be quite beautiful, we have an interest in removing them to achieve a more "natural" image, without the physical artifact. To do so can be challenging.
In this project we will explore many different techniques in order to identify these diffraction patterns and then to remove them from the image while maintaining as much of the rest of the original as possible. Some of the detection methods include frequency spectrum analysis and edge detection. Removal methods include averaging, deblurring, localized averaging, and dictionary learning.
NGC 7469 - a Chandra, Webb, and Hubble Composite image [1].
Of crucial importance to astronomical images from the JWST is the scientific accuracy of the images. When creating the images (as described here), the image specialists at NASA are very careful to ensure the techniques they apply don't create any aberrations or artifacts. However, due to the shape of the telescope, the diffraction pattern is created when images are taken of bright stars. This pattern is an artifact, so it does not represent what the stars truly look like. Hence, there is an interest in trying to remove these patterns from JWST images to preserve the image's scientific integrity.