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(A) when the Moon is near its highest point in the sky.
(B) when the Moon is near the horizon.
(C) whenever the Moon is not visible.
(D) None of the above.
Earth. To do this job, the observer points the telescope towards Vega (alpha Lyr., RA: 18.5h
, Dec: +39° ),
turns off its "clock drive" and measures trace out time, t=5.3 minutes, that Vega crosses the full diameter
of the FOV. Calculate the the FOV of this telescope in arc-minutes?
(a) What must the mass of the planet be?
(b) What is the acceleration due to gravity on this planet?
use to determine the distance to:
a. α Centauri (distance: 1.3 pc).
b. a globular cluster in the Milky Way (distance: ∼ 8 to 30 kpc).
c. an M0 Ia supergiant (distance: 5 kpc).
d. the Hyades open star cluster (distance: 46.3 pc).
e. a spiral galaxy in the Fornax cluster (distance: 17.2 Mpc).
f. the Large Magellanic cloud (distance: 48.5 kpc).
Motivate your answers.