Lab #5: Angular & Physical Sizes (continued) Method 2 (continued): (UK The values you computed are only valid if the Sun or Moon is on the celestial equator. If you're not observing the Sun or Moon when that occurs, a correction to the angular diameter must be made. Find the correction factor for the date the Sun's movie was made in the table below and multiply it by the angular diameter computed on page four. For the Moon's declination on the date the movie was made, use -14.5 degrees. Date DEC (deg) -20 Correction 0.94 0.98 -11 1/20 2/20 3/20 4/20 5/20 6/20 7/20 8/20 9/20 10/20 11/20 12/20 0 -11 -20 -23 12 20 23 21 13 0.98 0.94 0.92 0.93 0.97 0.98 0.94 0.92 0 1 ellipti mal oo0,000 Declination (degrees) = Correction factor = Angular diameter (a) x correction factor = Page 5 of 6 Sun Moon -14.5 deg muz to (sebs) JAVOITIO . Which of the methods you used to find the angular diameter of the Sun do you think gave the more accurate value? Explain briefly. Note: As it revolves around the Earth, the Moon moves in its path around the sky from west to east approximately one diameter every hour. In the short time interval that is used to find the Moon's angular diameter with Method 2, the Moon moves about 0.02 degrees - a very small amount relative to the Moon's angular diameter. pri bell The Moon revolves around the Earth in the same amount of time that it takes to rotate once on its axis. The Moon also oscillates or sways as it revolves. As a result, only slightly more than one half of the Moon's surface is visible from Earth.iques Hi tunte alb

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Lab #5: Angular & Physical Sizes (continued)
Method 2 (continued): (UK)
The values you computed are only valid if the Sun or Moon is on the celestial equator. If
you're not observing the Sun or Moon when that occurs, a correction to the angular
diameter must be made. Find the correction factor for the date the Sun's movie was made in
the table below and multiply it by the angular diameter computed on page four. For the
Moon's declination on the date the movie was made, use -14.5 degrees.
Date
DEC (deg) -20 -11
Correction 0.94 0.98
1/20 2/20 3/20 4/20 5/20 6/20 7/20 8/20 9/20 10/20 11/20 12/20
-23
0
-11
-20
12 20 23 21 13
0.98 0.94 0.92 0.93 0.97
0.98 0.94 0.92
0
1
mal oo0,000
Declination (degrees) =
Correction factor =
Angular diameter (a) x correction factor =
Page 5 of 6
Sun
Moon
-14.5 deg
muz
to (gbs)
JAKOITIO
. Which of the methods you used to find the angular diameter of the Sun do you think gave
the more accurate value? Explain briefly.
Note: As it revolves around the Earth, the Moon moves in its path around the sky from west
to east approximately one diameter every hour. In the short time interval that is used to find
the Moon's angular diameter with Method 2, the Moon moves about 0.02 degrees - a very
small amount relative to the Moon's angular diameter.
pri bell
The Moon revolves around the Earth in the same amount of time that it takes to rotate once
on its axis. The Moon also oscillates or sways as it revolves. As a result, only slightly more
than one half of the Moon's surface is visible from Earth.is Hiw
Tunte
dad
og
al
Transcribed Image Text:Lab #5: Angular & Physical Sizes (continued) Method 2 (continued): (UK) The values you computed are only valid if the Sun or Moon is on the celestial equator. If you're not observing the Sun or Moon when that occurs, a correction to the angular diameter must be made. Find the correction factor for the date the Sun's movie was made in the table below and multiply it by the angular diameter computed on page four. For the Moon's declination on the date the movie was made, use -14.5 degrees. Date DEC (deg) -20 -11 Correction 0.94 0.98 1/20 2/20 3/20 4/20 5/20 6/20 7/20 8/20 9/20 10/20 11/20 12/20 -23 0 -11 -20 12 20 23 21 13 0.98 0.94 0.92 0.93 0.97 0.98 0.94 0.92 0 1 mal oo0,000 Declination (degrees) = Correction factor = Angular diameter (a) x correction factor = Page 5 of 6 Sun Moon -14.5 deg muz to (gbs) JAKOITIO . Which of the methods you used to find the angular diameter of the Sun do you think gave the more accurate value? Explain briefly. Note: As it revolves around the Earth, the Moon moves in its path around the sky from west to east approximately one diameter every hour. In the short time interval that is used to find the Moon's angular diameter with Method 2, the Moon moves about 0.02 degrees - a very small amount relative to the Moon's angular diameter. pri bell The Moon revolves around the Earth in the same amount of time that it takes to rotate once on its axis. The Moon also oscillates or sways as it revolves. As a result, only slightly more than one half of the Moon's surface is visible from Earth.is Hiw Tunte dad og al
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