10.1 Observing the Sun Flashcards
(19 cards)
Methods to observe the sun with a telescope
-Telescopic projection
-H-alpha filter
How to do telescopic projection
Point a telescope at the sun and use the eyepiece to project an image of the sun onto a sheet of blank card
H-Alpha filter
-A filter which absorbs most radiation apart from a specific wavelength called Hydrogen Alpha
-Can be attatched to a telescope
What is the structure of a sunspot
Dark umbra in the centre surrounded by a lighter penumbra
What causes sunspots
A strong magnetic field in that area which reduces the convection of solar material, decreasing the temperature of that area
How do sunspots change during the solar cycle
-Sunspots appear at high altitudes at the beginning
-They increase in number until half way through the solar cycle, when they start to decrease
-The last sunspots of the cycle are at low latitudes
Why is the solar rotation period different at different latitudes
The sun is large
Where is the rotation period shorter on the sun
The poles
Where is the rotation period longer on the sun
The equator
Solar Rotation Period Formula
Time interval/rotation period = change in longitude/360
Butterfly diagram x axis
Time
Butterfly diagram y axis
Latitude
Radio waves for solar observation
Temperature
Microwaves for solar observation
The transition region
The transition region
The area between the chromosphere and corona
Infared for solar observation
Gas density
Visible light for solar observation
Photosphere
Ultraviolet for solar observation
High chromosphere and low corona
X-rays for solar observation
Corona
