Meade LX10 Instrukcja Użytkownika Pobierz pdf

Chapter 4

Introduction to the Meade LX-10 8

′′

Schmidt-Cassegrain Telescope

4.1 Purpose

In this lab, we will learn about the operation of the Meade LX-10 telescope and your plani-

sphere. It is much easier to learn the operation of the telescope in a classroom than on the

Small Hall observation deck at night. What you learn in this afternoon lab wi l l be used

extensively during the evening observations with the telescopes.

4.2 Introduction

In this lab course, you will be using a Meade LX-10 telescope to make observations of celestial

objects. The LX-10 is of Schmidt-Cassegrain design, and u ses an 8-inch mirror in the base

of the teles cope to collect and focus the light.

What does the ’Schmidt-Cassegrain’ name mean?

Figure 4.1: The Schmidt-Cassegrain Telescope.

Schmidt-Cassegrains use a spherical primary mirror (a) to focus incoming light onto a convex

secondary mirror (b), which sends the light back through a hole in the primary mirror to

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Podsumowanie treści

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Chapter 4Introduction to the Meade LX-10 8′′Schmidt-Cassegrain Telescope4.1 PurposeIn this lab, we will learn about the operation of the Meade LX-10 t

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the eyepiece, located at the rear of the telescope. Spherical mirrors are less expensive tomake than parabolic mirrors but intr oduce spherical aberra

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2. The focus knob.3. The RA and Dec lock clamps. NEVER try to physically move the telescope when theseare locked. You will irreversibly damage the gea

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]Figure 4.2: The Meade 8” LX-10 Sch m i d t -Ca sse gr a i n Telescope32

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Figure 4.3: Eyepiece and Focus KnobFigure 4.4: The Equatorial Wed g e33

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4.3.4 How to Use a Planisphere1. Note the d a t e and tim e (if the clocks are set for d aylight savings time, deduct an hourfrom your clock tim e) .2

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Secondly, the relative brightness of stars cannot be represented pr o perly on a printed map.Remember that a star that is bigger on the map will appea

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