About This Chapter
Overview of Telescopes - Chapter Summary
The lessons you'll find in this chapter focus mainly on the types of telescopes and how telescopes work. You will have the opportunity to review key terms and explore the science behind this astronomical instrument.
What are false color images? The electromagnetic spectrum? Interferometry? These are just some of the concepts you can find out more about using this chapter. Once you have completed your review, you will be able to:
- List and explain types of telescopes
- Detail the powers and limitations of telescopes
- Describe how telescopes form images and detect and measure light
- Provide details about radio telescopes
- Define and understand the electromagnetic spectrum and false color images
- Identify factors hindering astronomical observations on Earth
Expert instructors guide you through this material and break down terms and telescope operations to help you more easily retain this information. Each lesson is accessible at all times, from any device, and transcripts are printable so you can generate quick-reference materials if desired. Short self-assessment quizzes check your knowledge and ensure your full understanding of one topic before you move on to the next.
1. Types of Telescopes: Radio, Reflecting & Refracting Telescopes
Learn about the different types of telescopes that astronomers use: X-ray, radio, gamma ray, reflecting and refracting. Learn what the differences are between them and what different things they show us about the universe.
2. Telescopes: Powers & Limitations
This lesson will discuss some limitations and three important powers of the telescope: the light gathering power, resolving power, and magnifying power.
3. How Telescopes Form Images
This lesson will explain to you the fundamental points of how images are formed in refracting and reflecting telescopes as well as why our eyes need telescopes to help us see distant objects.
4. How Telescopes Detect & Measure Light
This lesson will go over the numerous methods astronomers can use to detect and measure light, including photography, spectroscopy, photometry, and CCDs.
5. Radio Telescopes & Interferometry
This lesson will go over some key concepts related to radio astronomy. We'll cover what radio telescopes are, the basics of how they function, and what their disadvantages are compared to optical telescopes and how this is resolved.
6. Telescopes & the Electromagnetic Spectrum
This lesson will teach you about which forms of light can reach the ground and which cannot and how we overcome this problem. We'll go over the concept of seeing as well as why we send telescopes into space.
7. Telescopes & False Color Images
How do we 'see' invisible forms of light if they're invisible? What would happen if your eyes had the ability for X-ray vision here on Earth? This lesson will help answer these questions.
8. Factors That Hinder Astronomical Observations on Earth
This lesson will discuss several important factors that affect the ability of someone using a telescope to see a celestial object clearly, including weather, dust, seeing, and light pollution.
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Other chapters within the DSST Astronomy: Study Guide & Test Prep course
- History of Astronomy Basics
- How Scientists Think and Work
- Overview of Light in Astronomy
- Overview of Newton's Laws in Astronomy
- The Orbits of Celestial Bodies
- The Earth, Sky, and Moon Basics
- The Moon: Formation & Phases
- The Sun's Structure & Components
- The Solar System: Layout, Formation & Dating
- Characteristics of Our Solar System's Planets
- Small Celestial Bodies & Satellites in Our Solar System
- Measurement of Star Qualities
- Star Types and Significance
- The Birth and Life of Stars
- Basics of Star Death
- Neutron Stars & Black Holes
- The Milky Way Galaxy
- Galaxies: Properties & Characteristics
- The Universe: Key Concepts & Theories
- Intro to Life in the Universe
- Celestial Navigation & Timekeeping
- DSST Informational Resources
- DSST Astronomy Flashcards