Celestial Sphere Lab Report 2022(1)(1)
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School
George Mason University *
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Course
103
Subject
Astronomy
Date
Jan 9, 2024
Type
Pages
4
Uploaded by BrigadierAtomLark33
The Celestial Sphere
Lab Report
Date __________________
Group Members Names
Role
_____________Marlene Flore______________
Leader (manages people and time)
_______________Alex Kantor_____
Recorder (completes and submits group report)
_____________Jack DiMaggio_________
Checker (makes sure all results are correctly reported)
1.
Explain the following terms:
a.
Right ascension –
the astronomical equivalent of longitude, measured in hours going east to
west
b.
Declination –
The angular distance north and south from the celestial equator.
c.
Latitude –
The measure from the equator to the north and south poles from 0 degrees to 90
d.
Longitude –
From east to west 0 to 180 degrees
e.
Altitude -
the height of an celestial body starting from the horizon
f.
Azimuth –
A measure from north clockwise to the celestial body from 0 to 360 degrees
Stars on the sphere are represented by small circles of various sizes.
2.
What is the name of the brightest star in the constellation of Cygnus?
Deneb
3.
What is the name of the brightest star in the constellation of Lyra?
Vega
4.
Complete the table below.
Star
Name
Constellation
Name
R.A.
Dec.
Arcturus
Bootes
14.2 hours
16° north
Sirius
Canis Major
6.5 hours
17° south
Altair
Aquila
19.8 hours
10° north
Pollux
Gemini
7.8 hours
14° north
1
5.
Set the Globe for Washington D.C. for today’s date at noon:
a.
Which constellation is closest to the zenith at noon?
Canes Venatici
b.
What is the Sun's altitude at noon?
72°
c.
What direction would you face in order to see the Sun at noon?
You face south
d.
Rotate the celestial sphere and Sun while holding the Earth knob still to ^ind how many hours after
noon sunset occurs. (Give your answer to the nearest ½ hour)
6.5 hours
e.
What is the Sun's altitude at sunset today?
0°
f.
What direction would you face to watch sunset today?
West
g.
At what
longitude
is it noon when the sun is just setting in Washington, D.C.?
7.5° east
6.
List two stars that are just rising at sunset today.
List two stars that are just rising at sunset today.
7.
Now rotate the sky to 3 hours past sunset and record the altitudes and azimuths of the stars
8.
What constellation is closest to being at the zenith today at midnight?
Lacerta, Pegasus
constellation
A.
Procyon
Canis Minor
7.6 hours
5° north
Rigel
Orion
5.3 hours
7° south
Star
Name
Constellation
Name
R.A.
Dec.
Star name
Constellation
Right Ascension
Declination
Altitude
Azimuth
A
Triangulum
1.9 hours
29° north
10°
50°
M31
Andromeda
.3 hours
40° north
30°
60°
Star name
Constellation
Right Ascension
Declination
Altitude
Azimuth
A
Triangulum
1.9 hours
29° north
40°
75°
M31
Andromeda
.3 hours
40° north
60°
70°
2
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