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Astronomy Lab Final
lab quiz collage
20
Astronomy
Undergraduate 1
11/17/2008

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Cards

Term
You line up the axis of the telescope with
Definition
The direction of Polaris.
Term
If polaris is in the center of the telescope's field of view, what should be the reading of the Declination?
Definition
90 degrees
Term
Using a guide star, you were able to set which of the following scales?
Definition
Right Ascension
Term
Which of the following scales is the motor connected to:
Definition
Right Ascension
Term
Which of the following coordinates of your guide star changed during your observation?
Definition
Alititude and Azimuth
Term
When setting up the telescope we align its axis with:
Definition
The direction of Polaris
Term
Why do we take the time to set up the telescope in the general mthod?
Definition
So that we can use the motor to track the moon.
Term
When observing the Moon, on what part of it were you able to best make out its features?
Definition
The terminator - along the shadow line.
Term
When observing the Moon through the telescope:
Definition
The Moon appeared larger and the Moon was left-right reversed.
Term
When you observe objects through the telescope, how are they oriented?
Definition
Right-left reversed
Term
Why do astronomers prefer to use RA and Dec rather then altitude and azimuth
Definition
Because the RA and Dec of a star never changes.
Term
What happens to the magnification of the telescope when you increase the focal length of the eyepiece by a factor of 2
Definition
it decreases by a factor of 2.
Term
What coordinate on the telescope do you set with a guidestar?
Definition
Right Ascension
Term
How did we split up the spectra tonight so that we could observe its individual lines?
Definition
A diffraction grating
Term
What do the lines in an element's spectra correspond to?
Definition
Energy differences in the electron levels
Term
What do astronomers use spectroscopy for?
Definition
To determine the chemical composition of an object
Term
Clear skies provided, which of the following stars would have been visible from Tallahassee tonight at 9pm
Definition
Polaris, Vega, Deneb
Term
Which of the following planets were out at 9pm?
Definition
Jupiter, and Neptune
Term
Which of the following Messier objects were out at 9pm?
Definition
M31 Andromeda Galaxy
Term
Which of the following stars have a declination of 90 degrees?
Definition
Polaris
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