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ASTR 205 or Astronomy 205 Assignment 1- Observational Study Athabasca University 2024 full document
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ASTR 205 or Astronomy 205 Assignment 1- Observational Study Athabasca University 2024 full document
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ASTR 205 or Astronomy 205 Assignment 1-Observational Study Athabasca University 2024
full document Introduction
This assignment is an introduction to familiarize myself with some aspects of observational astronomy. It consists of 4 different exercises, the first 3 dealing with observations of the night sky, and the last one dealing with observations of light sources through a diffraction grating. It has been designed with the intent to gain familiarity with the night sky, to gain experience in making basic astronomical observations, and to appreciate how astronomers make use of these observations to interpret the physical process at work. The following exercises relate to many astronomy aspects that I have learned while reading the textbook and has subsequently allowed me to further develop my understanding of these new concepts.
Exercise 1: The moon and its motion
The first exercise comprised of doing 4 separate observations of the moon, keeping track of its position on a star chart and drawing sketches showing the appearance of the Moon's crescent and its position relative to the horizon. An objective of these observations was
to gain a better comprehension on the moon’s orbital motion. The first thing that became apparent when looking at the recorded positions of the Moon on my star chart was that the Moon orbits Earth in the eastern direction. Due to Earth’s rotation, the moon rises in the east and sets in the west (like any other celestial object). Without doing observations over the span of multiple nights, someone could mistakenly conclude that the moon orbits the Earth in a westward direction. This is evidently false, and with my observations it is obvious that the Moon orbits Earth in an eastward direction. This orbital motion leads to the next two things that I noticed, which is that while the
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