DonutUFO-Q uickExplanatio [FNSうたの夏まつり]
Donut UFO - Quick Explanation
Out-of-focus stars (or other small lights) are a common source of \UFO\ photos and videos. Sometimes they look like \orbs\, and sometimes they have rings in them that make them look more \donut\ shaped. Here I demonstrate how you can duplicate the effect with your phone.
Diffraction rings explained: https://www.telescope-optics.net/diffraction_pattern_and_aberrations.htm
Good example of Venus out of focus: https://www.youtube.com/watch?v=ydvsLzLYZM0
Out-of-focus stars (or other small lights) are a common source of \UFO\ photos and videos. Sometimes they look like \orbs\, and sometimes they have rings in them that make them look more \donut\ shaped. Here I demonstrate how you can duplicate the effect with your phone.
Diffraction rings explained: https://www.telescope-optics.net/diffraction_pattern_and_aberrations.htm
Good example of Venus out of focus: https://www.youtube.com/watch?v=ydvsLzLYZM0
