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    ASTRONOMY 104: Stars and Galaxies 

  Week 2  Fall 2007

Lab Update

Date

Class Topic

Readings/Assignments

Monday,   

Aug. 27

Discussion of "Observing the Night Sky"

Class summary of observations and questions

Angles, Parallax distance, Angular Size

Ch. 17.1, 1.7

Due: "Observations of the Night Sky"

Solutions: Practice Problems Distance Units

Wednesday, 

Aug. 29

Electromagnetic Spectrum

EM radiation ppt  (Note: you must be logged in to Novell to access the Powerpoints; Alternatively, you can access them from netstorage.depauw.edu)

Ch. 3.1-3.5

Solutions: Practice Problems: EM Radiation

Friday,   

Aug. 31

Spectra and Atomic Structure

Spectroscopy PPT

Ch. 4.1 - 4.4

Solutions: Energy Levels in the Hydrogen Atom

* marks optional (but useful!) readings

 

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week 8 week 9 week 10 week 11   week 12 week 13 week 14
week 15

 Full Schedule

 


 

Announcements:

Lab this week is definitely indoors, in our regular classroom, beginning at 7:00 p.m. Bring your star charts (green folder)

Assignments:

1) Observations of the Night Sky: Due Monday, Aug. 27 in class.

The objective of this exercise is for you to begin looking at the sky, making observations and asking questions about what you see. This exercise will not take long (plan about 45 minutes), but cannot be rushed. Use it as a study break or for something to do to relax. On a clear night, find a dark place with few lights. Take along a pillow and a blanket and perhaps some bug spray, and park yourself on the ground looking up at the sky. Just let your eye wander a bit. Start taking notice of what you see. What observations about the night sky can you make with just your eyes? Do all the stars look the same? Make a list of everything you notice. If you happen to have binoculars, take them along. How much more can you see with binoculars? Add your binocular observations to your list. As you look at the sky, what questions come to mind? Make a list of these questions. Remember, no question is trivial, no observation is silly. Again, it is important you do not try to rush through this exercise. Turn in a list of your observations, and a list of your questions. Take your time, relax, and enjoy the sky.