On the Vernal (spring) equinox from Tallahassee, at which azimust will the sun set?
270, in the West
How many hours of sunlight are there on the Winter Solstice at the North Pole?
If you were at the north Pole on the Vernal Equinox, what would be the maximum altitude of the sun?
If you were at the North Pole on the Vernal equinox, what would be the maximum altitude of Polaris?
Does the sun ever reach 90 altitude in Tallahassee, Fl?
Why do we begin by aligning our telescope with Polaris?
Because it is located at the North Celestrial Pole.
If we were to go on a field trip to the Artic Cirtle (Latitude 66.5), what altitude should we set our telescope to so that we can align it with polaris?
If the polar axis of the telescope is pointing at the N. Celestial Pol and Polaris is in the telescope's field of view, what should the declination read?
After alighning the telescope with Polaris you alighned it with a guide star to enable you to set which of the following scales?
Which of the following coordinates of your guide star changed during your observation?
Altitude and Azimuth
Which of the following coordinates of a star change during the night and also depend on the place of observations?
Altitude and Azimuth
Which of the following coordinates of a star remain the same, both during the night and from night to night?
Declination and Right ascension
Which of the following coordinates specifies the angular height above the horizon?
If you see a star that is due East, what is its Azimuth?
When setting up the telescope we align the its polar (or RA axis) axis with:
The direction of Polaris
Why do we take the time to align the telescopes polar axis?
Because if the telescope's polar axis is correctly alighned, the telescope only needs to be adjusted about this axis to track the moon as the Earth rotates. This can be done automaticall, and at the correct rate, using the motor on this axis.
When observing the moon, where can features such as mountains and craters be seen most clearly?
Along the terminator- the boundary between the sunlit (lunar day) and dark (lunar night) areas
What causes the changes in the image we observe through the telescope?
Concave primary mirror, mirror reflection, star diagonal reflects the light by 90, orientation of the star diagonal
Clear skies provided, which of the following stars would have been visible tonight at 9PM from Tallahassee,
Sirius, Polaris, Capella
Which of the following planets were out at 9PM
Mars and Jupitar
Which of the following nebulae were above the horizon at 9PM?
M42 Orion Nebula, M1 Crab Nebula
Which of the following galaxies and clusters were above the horizon?
M31, M51, M45,M44
When setting up the telescope we align its RA axis with
the Direction of Polaris
Which coordinates of Jupiter did not change significantly during the course of the lab?
Right ascension and Desclination
If we wanted to know how big jupitar was, what information would we need?
Its distance and transit time
The brightest star that was visible tonight was
Sirius in Canis Major
Which of the following stars did you not observe tonight?
Which of the following stars was reddish?
Betelgeuse in Orion
Which star did not move on the sky during the entire time of the lab?
Which of the following is a measurement of angular height above the horizon?
The field of view of a telescope is measured in
Why do astronomers prefer to use RA and Dec rather then altitude and azimuth?
Because the RA and Dec. of a star do not change
To do with choice of eyepiece, which of the following is correct?
To first find an object, you would use an eyepiece that gives a large field of view
Which of the following three angles is larger?
As you approach a building the angular height of the building