The Sun hits the high point at summer solstice (June) and the low point at the winter solstice (December). Observe the Sun moving in a figure eight shape, tracing out the analemma over the course of a year. Time Controls by Key presses – time jumping: equals, minus, left and right bracketsĮach time the day or week jump keys are pressed the Sun will seem to move in the sky. Use the Left Bracket or Right Bracket keys to go week by week. Use the Plus (+) or Minus (-) keys to go day by day. We are going to do a Day by day time lapse. To see the Analemma we have to do some time travel.
Stellarium screenshot – Sun at a good zoom level locked into the viewport. A good zoom level is where you can see a little bit of ground and the Sun is in view. Get to a good zoom level using the scroll function on the mouse or trackpad. Stellarium screenshot showing the Sun locked in the viewport. This will keep the Sun in the viewport as we do some time travel. Lock the Sun into the viewport using the Space bar. Time Controls by Key presses 8 to go to “now”, J, K, L to do Time Lapse Find the SunĬommand + F and type “sun” (with no quotes) into the window.
Set the time to around 7:00am local time. ( Download it here if you don’t have it already). Here is a quick tutorial on time control. In this visualization we will be using the Time Control features of Stellarium. The analemma is easier to see when it is animated. The June weeks are at the top left, December weeks at the bottom right and April and September weeks are in the middle at the crossing of the figure 8. The pictures show every Sun position frozen in the sky each week at the same time of day: early in the morning. Stellarium can help you see sky patterns and practice Physical Astronomy.īy following this article you will be able to see the analemma moving – a figure 8 shaped path that the Sun follows yearly.Ībove is a composite image that shows the position of the Sun in the morning sky each week.
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