5/26/2023 0 Comments Earth moon viewerEach night, the moon rises and sets almost an hour later than the night before. But if you take a little bit closer look, you start to see that this is not the whole story. ![]() In general (assuming that you are viewing from a place not particularly close to one of the poles) the bodies we see in the sky rise in the East, and set in the West about 12 hours later. This might sound odd, because the rock we live on spins pretty quickly relative to the most obvious points of reference. The sun would make it's way across the sky, from one horizon to the other over a period of about two weeks, to rise again in another two weeks. And it would be seen to spin, the continents coming in and out of view over the course of an Earth day (24 hours). The Earth would always appear in approximately the same location in the sky, when viewed from a point on the lunar surface. Picture 5 shows my stellarium location settings on the moon Shows other end of the oscilation near the 185 azimuth line (see yellow arrows) You can use Gemini (lower right corner) for reference (see yellow arrows) from head to crotch of one Gemini twin would be a good reference for how wide the oscillation is (not sure if your sundial can detect the difference) Other end of ellipse near 185 azimuth line Shows one end of the oscillation near the 200 azimuth line (see yellow arrows) ![]() Yellow lines are azimuth (gif itself rotated to approximately match the orientation of the 260 degree azimuth line in the first picture)Īnswer for Emilio Pisanty comment on whether the oscillation is detectable by eyeįield of view 60 degrees (default view when stellarium first opened) ![]() One whole day 24 hours (give or take a few minutes) ![]() By the way the sun is of course the brightest and i use it as reference for recording (start record when sun is in frame then stop when it appears again in the same position which is roughly one month) Sorry about the quality- limited to 256 colors for smaller gifs. Still new at stellarium but here are some quick capture gif lasting one month.
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