ASTRONOMY 10

THIRD HOUR SESSION “J”

NAME

KEY-J

 

 

 

 

 

ACTIVITY:  More Starry Night

DATE

 

ID#

 

For all questions below, unless stated otherwise, all observations are from Sacramento and the year is assumed to be the current year.

1.   Set the date to _______May 2________ and 12:00 noon. Select the “S” button in the toolbar so as to present a view of the southern sky. Use the scroll keys to bring the Sun into view (if necessary). Open Sun’s information box (by double-clicking on the Sun). What time does the Sun rise and set (give the answer to the nearest minute)?

6:07 am

7:56 pm

2.   Set the time to the sunset time given as your answer to Question #1 and select the “W” button in the toolbar so as to present a view of the western sky at sunset (the SW and NW horizon points should just be in your 100-degree field of view). List the naked-eye planets that occupy the western sky.

Mars

3.   Set the time to the sunrise time and select the “E” button in the toolbar to present a view of the eastern sky at sunset (with a 100-degree field of view).  List the naked-eye planets that occupy the eastern sky.

Mercury and Venus (Uranus and Neptune not naked eye)

4.   Now step back in time to midnight and select the “S” button in the toolbar so as to present a 100-degree view of the southern sky. List the naked-eye planets that occupy the southern sky.

Jupiter

5.   What time does the Moon rise and set? Time should be set at midnight on date in #1.

11:08 am (previous day)

1:35 am

 

6. If you wanted to observe the Moon with your telescope, from what you have discovered in the previous questions, what would be the best timeframe to make your observations (sunset-to-midnight or midnight-to-sunrise)?

sunset-to-midnight

 

midnight-to-sunrise

7. If you wanted to observe deep sky objects with your telescope, from what you have discovered in the previous questions, what would be the best timeframe to make your observations (sunset-to-midnight or midnight-to-sunrise)?

8.   Set the date to ____February 25___ and find the planet _Saturn_. Center the planet on the screen with a 100-degree field-of-view. If it is daylight, turn the daylight off so that the background stars can be seen. Set the time-step to 1 sidereal day. Hit the forward time button and watch the planet move to the east relative to the background stars. Make a note of the days when the planet reverses direction to the west and then back again to the east (between which the planet is undergoing retrograde motion). How many days did the planet experience retrograde motion? Zoom in to 10° or so to see retrograde motion start and stop.

138 (± 7) days

9.   Under the “Go” menu item select “Outer Solar System” (It’s labeled OU~1) command. Orient the Solar System for a “view from above”. Zoom in to 40° to 20°. Set an appropriate time-step (5 days is good) to watch the planets revolve around the Sun. Hit the forward time button and watch __Jupiter____  make one complete revolution. How many years does this take (give your estimate to the nearest tenth of a year).

11.8 (± 1) years

10. If a pair of binoculars has a Field 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 ___M31____.  Which will give the best view of ___M1_____?

binos

telescope

 

 

11.  Locate the star at RA _05h 55m_ and DEC ____+07º____ on your SC001 chart.       What is the name of the star?  Using Starry Night, is the star above the horizon at 9 PM on the date in question 1?

Betelgeuse

Yes

 

 

 

12. Using the Star Gazers Almanac (SGA) what planets are above the horizon at _ 11:00 pm_  on _May 7_  .  Using Starry NIght, how many planets are above the horizon at at _4 am_ on _June 5___

Jupiter and Saturn

4, Venus, Saturn, Neptune, Uranus

 

13. Using the Planisphere, is ____Pollux____  above the horizon at ___10 pm ___ on __ May 15, 2017_?   Using Starry Night, what time does this object rise and set on this date? Use 10pm as time for Starry Night and set it to standard time…

Yes

8:33 am

11:58 pm