TelescopeControl: No telescope server directory has been found. Close the “Sky and viewing options window".After configuring Stellarium for my iOptron SmartStar-A GOTO telescope mount (using 8402A GotoNova controller) via the 'directly through the serial port' and port '/dev/ttyUSB0', there is no evidence that the mount is actually being controlled (e.g. You should now see a dark sky with no horizon. Select the “Landscaping” tab and in the “Options” section click the “Show ground” box off.
Click on the “Sky and viewing options window"”. Move the cursor over to the lower left side to get another icon menu to appear. Next, get rid of the atmosphere by clicking the “atmosphere” button that looks like a cloud with the Sun peeking out behind it. Stop the flow of time by clicking on the “play” button. Move the cursor down to the lower left until a menu of icons appears. You will need to stop time and get rid of the atmosphere. Look for the Stellarium icon and double click on it 2. Newton’s version of Kepler’s 3 Law tells us that the mass of Jupiter (plus the negligible mass of the moon in question) should be given by Jupiter's Mass = semi-major axis3 Period? where the mass will be in solar masses if the semimajor axis is in Astronomical Units and the period is in (Earth) years. In today’s lab you will be repeating measurements made by others after Newton derived Kepler's 3" Law and showed how it could be used to determine the mass of the Sun or a planet.
While there is evidence that others were observing Jupiter and its moons at the same time, Galileo was the first to report his observations and so we now call the four moons he discovered the Galilean moons of Jupiter. R § THE GALILEAN SATELLITES AND THE MASS OF JUPITER In 1610 Galileo Galilei was one of the first persons to point a telescope at Jupiter and observe that the planet has four bright moons.
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