7 ms·
1. Those are diffraction spikes that reflects the structure of the mirror, which is composed of hexagonal elements. 2. That is background galaxies that are dis
by kryptiskt 4y ago
1. Those are diffraction spikes that reflects the structure of the mirror, which is composed of hexagonal elements.
2. That is background galaxies that are distorted and heavily magnified due to gravitational lensing, gravity from a foreground galaxy can bend the light just like a lens (the sun bending the light from stars during an eclipse was an early test of general relativity just after WWI)
- 8note 4y agoDuplication can also come from gravitation lensing, as the light from the bright thing bends around either side of the heavy thing
- tkinom 4y agoThere should be some post post-processing algorithms that can remove/clean hex elements, right?
- peppertree 4y agoI can see lots of galaxies that are rather dim. Are the stars with diffraction spikes really close or just extra bright?