4 ms·
This kind of stuff is really awe-inspiring. I have a couple of questions for anyone who is knowledgeable on the subject: 1. Looking at the light from the tiny
by turdnagel 4y ago
This kind of stuff is really awe-inspiring. I have a couple of questions for anyone who is knowledgeable on the subject:
1. Looking at the light from the tiny red-shifted galaxies that are ~13 billion years old... would the Milky Way appear the same to an observer ~13 billion ly from us?
2. What is the cause of the star pointed artifacts (specifically, having 6 major "points") for particularly bright objects? If you zoom in closely on any one of the points, you can almost make out a hex grid, as if the shape of the telescope's mirrors is the cause. Is that correct?
- ip26 4y agoThe points are caused by the support arms of the secondary mirror.
- opwieurposiu 4y ago1. Yes pretty much. 2. Yes the artifact shape is related to the mirror shape, and the support arms which block some light. this is called a Diffraction spike. There are a bunch of fake web telescope image videos on YouTube with 4pointed diffraction spikes so you can tell they are taken from a different telescope. https://en.wikipedia.org/wiki/Diffraction_spike https://en.wikipedia.org/wiki/Diffraction_spike
- 12ian34 4y agoon 1., I'm not sure but I'd guess so, yes. on 2., you are seeing Diffraction Spikes[0] which are artefacts of the telescope's design. [0]: https://en.wikipedia.org/wiki/Diffraction_spike https://en.wikipedia.org/wiki/Diffraction_spike