About This Chapter
Below is a sample breakdown of the Telescopes chapter into a 5-day school week. Based on the pace of your course, you may need to adapt the lesson plan to fit your needs.
|Day||Topics||Key Terms and Concepts Covered|
|Monday||Types of telescopes||Reflecting, refracting, radio, focal point, focal length, chromatic aberration and achromatic lens|
|Tuesday||Image formation, powers and limitations||Light-collecting area, angular resolution, aperture, light-gathering, magnifying, resolving power, diffraction, fringe and seeding|
|Wednesday||Light detection and measurement; types of reflecting telescopes||Optical telescopes, focal plane and secondary mirror; Cassegrain, Newtonian and Schmidt-Cassegrain telescopes|
|Thursday||Telescope mounts, modern mirrors and radio telescopes||Sidereal drive, equatorial, polar axis, active optics, altazimuth and interferometry|
|Friday||Electromagnetic spectrum, false color images and hindered observations||Space telescopes, wavelength bands and adaptive optics|
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. Refracting & Reflecting Telescopes: Key Concepts
This lesson will discuss some key terms and concepts relating to the refracting and reflecting telescope: primary mirror/lens, eyepiece, focal length, focal point, chromatic aberration, and achromatic lens.
3. 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.
4. 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.
5. 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.
6. Different Kinds of Traditional Reflecting Telescopes
This lesson will discuss three major kinds of traditional reflecting telescopes and their major differences. These include the Newtonian, Cassegrain, and Schmidt-Cassegrain telescopes.
7. Major Forms of Telescope Mounts & Modern Mirrors
This lesson will discuss two major telescope mounts, the equatorial and altazimuth mount, as well as two modern kinds of telescope mirrors, the floppy and segmented mirrors.
8. 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.
9. 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.
10. 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.
11. 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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