19 karma · joined August 12, 2018
i think everyone replying to you just got wooshed.
my bad - and here, i made this as a mea culpa to show that it's legit: https://i.imgur.com/aTvpilo.gif
you can see that they are all identical star fields, and you can see the slight egg shaped stars at an angle, which happens when a shutter is opened for ~30 seconds or so (because stars move across the sky.) the photographer would have to have a relatively quick shutter to capture the fine details of the ash cloud burst, but at that speed it would not pick up the stars at all.
however, but they are not insurmountable, and many people are doing it:https://spectrum.ieee.org/aerospace/aviation/cheaper-lighter...
also, the high altitude penalties for electric motors are completely negligible. cooling efficiency for an electric motor has nothing to do with power output.
citation needed.
it's unclear to me how i am supposed to help improve this.