Good question. Answer: I cheated. I pulled back the camera POV high above the galaxy's plane. Then, making sure there wasn't anything in the background, I HELD DOWN THE ARROW KEY for the duration of my video recording to spin the camera's POV and create the ILLUSION that the galaxy was rotating.
To make differential rotation, I overlaid two versions of the same video clip with appropriate opacities, and played back the smaller inner clip at double speed.
How can you make a spiral galaxy rotate in celestia?
ArataMusic1 2 years ago
Good question. Answer: I cheated. I pulled back the camera POV high above the galaxy's plane. Then, making sure there wasn't anything in the background, I HELD DOWN THE ARROW KEY for the duration of my video recording to spin the camera's POV and create the ILLUSION that the galaxy was rotating.
To make differential rotation, I overlaid two versions of the same video clip with appropriate opacities, and played back the smaller inner clip at double speed.
theropod 2 years ago
do galaxys turn clockwise as well?
jtlupo 2 years ago
All spiral galaxies do. It just depends on whether you're looking at it from above, or below.
theropod 2 years ago 2