Stellarium Review You should make sure that your options are set correctly--location to Sacramento, and all the appropriate tools are selected on the lower panel. Review Third Hour D if you need to. Options you should have "turned on\" are in white (from left to right): Constellation Labels, Constellation Boundaries, Ground, Cardinal points, Atmosphere, Planet labels, Full screen mode, and Stop Time. If you want to exit Full Screen display, select the option called "Full screen mode" and the program goes in a \"windowed" display. Before we set the time and date, stop the clock from advancing. Remember to "Find" something, one can use Ctrl-F (or Command-F on a Mac). Once the dialogue box comes up, type in the object you want and then hit Return. Important caution... Stellarium is a different tool than the Skygazer's Almanac and Planisphere and the results will vary. So, to get the correct answers... use the tools below as indicated. Do NOT use Stellarium to answer Planisphere questions, and vice versa! Stellarium Questions for this Module Start by setting the date to 25 November 2023 and the time to noon (12:00:00). 1. Facing south, move the screen around until you see the sun. Click on the sun and you will see information about the Sun. What time will the sun set on this day? Note: Stellarium uses a 24-hour clock so the time as they list it will look something like 21h 33m which means 21:33 or 9:33 pm. 2. What constellation does the sun occupy at the time and date given in Question #1? (Note: The 3-letter abbreviations in the data table are not the full constellation names. You'll need to activate the "constellation boundaries" and "constellation labels\" to see the constellation boundaries that include the sun.) 3. Set the time to 2 hours after the sunset time from Question #1. Set the FOV to approximately 60. Saturn should be visible, if not use a search to nd Saturn. What time will Saturn set? For questions 4 to 9 we will remain at the same time and date. 4. Which constellation is the planet Saturn in on the given date? 5. Bring up the detailed information table about Saturn. (If it is not already displayed when you used the Find-tool, click on the object to view it.) What is the equatorial diameter of the planet? Recall that you adjust the eld of view (FOV), displayed on the Lower Panel, either by using the mouse wheel, or Ctrl-Up/Down, or Cmd-Up/ Down (on a Mac). 6. Two parts (answer both) a. Center Saturn by using the nd tool. Zoom in until you can see Saturn's rings and moons. Notice we can see the moons of Saturn! What is the name of the brightest moon? b. Double click on this moon. What is the physical diameter of the object (in km)? 7. Two parts (answer both) a. Find our own Moon (you will have to zoom out a bit, and scroll around to see it). When does it set? b. According to Stellarium, what is the phase of the Moon? Recall that to measure the angular distance between two objects in the sky, you either select the protractor tool in the lower panel, or toggle it with Ctrl-A (Cmd-A on the Mac). 8. Zoom back out so that the FOV is about 60 and look East to Northeast. Find Aldebaran and Capella and measure their angular separation--rounding your answer to the nearest degree. Geek hint: the more you zoom in, the more precisely you can measure the distances between their centers!) 9. Two parts--answer both in order. (In each case, which instrument gives you the best match to the angular sizes of these objects?) a. If a pair of binoculars has a eld of view (FOV) of 5 and a telescope with a particular eyepiece has a FOV of 05, which will give the best view of M31? b. If a pair of binoculars has a eld of view (FOV) of 5 and a telescope with a particular eyepiece has a FOV of 0.5, which will give the best view of M15? 10. Two parts (answer both) Locate the star at RA = 23h 05m and DEC = +15 on your SCOOl chart. You may need to reset the time for part (b.) a. What is the name of the star? b. Using Stellarium, is the star above the horizon at 11 PM on November 25 (23:00)