Meade 4504 instruction manual Planets, Deep-Sky Objects

Page 45

Fig. 34: Jupiter and its four largest moons. The moons can be observed in a different position every night.

Fig. 35: Saturn has the most extensive ring structure in our Solar System.

Fig. 36: The Pleiades is one of the most beautiful open clusters.

Planets

Planets change positions in the sky as they orbit around the Sun. To locate the planets on a given day or month, consult a monthly astronomy magazine, such as Sky and Telescope or Astronomy. Listed below are the best planets for viewing through the 4504.

Venus is about nine-tenths the diameter of Earth. As Venus orbits the Sun, observers can see it go through phases (crescent, half, and full) much like those of the Moon. The disk of Venus appears white as Sunlight is reflected off the thick cloud cover that completely obscures any surface detail.

Mars is about half the diameter of Earth, and appears through the telescope as a tiny reddish-orange disk. It may be possible to see a hint of white at one of the planet’s Polar ice caps. Approximately every two years, when Mars is closest to Earth in its orbit, additional detail and coloring on the planet's surface may be visible.

Jupiter is the largest planet in our solar system and is 11 times the diameter of Earth. The planet appears as a disk with dark lines stretching across the surface. These lines are cloud bands in the atmosphere. Four of Jupiter’s 16 moons (Io, Europa, Ganymede, and Callisto) can be seen as “star-like” points of light when using even the lowest magnification. These moons orbit Jupiter so that the number of moons visible on any given night changes as they circle around the giant planet.

Saturn is nine times the diameter of Earth and appears as a small, round disk with rings extending out from either side. In 1610, Galileo, the first person to observe Saturn through a telescope, did not understand that what he was seeing were rings. Instead, he believed that Saturn had “ears.” Saturn’s rings are composed of billions of ice particles ranging in size from a speck of dust to the size of a house. The major division in Saturn's rings, called the Cassini Division, is occasionally visible through the 4504. Titan, the largest of Saturn’s 18 moons can also be seen as a bright, star- like object near the planet.

Deep-Sky Objects

Star charts can be used to locate constellations, individual stars and deep-sky objects. Examples of various deep-sky objects are given below:

Stars are large gaseous objects that are self-illuminated by nuclear fusion in their core. Because of their vast distances from our solar system, all stars appear as pinpoints of light, irrespective of the size of the telescope used.

Nebulae are vast interstellar clouds of gas and dust where stars are formed. Most impressive of these is the Great Nebula in Orion (M42), a diffuse nebula that appears as a faint wispy gray cloud. M42 is 1600 light years from Earth.

Open Clusters are loose groupings of young stars, all recently formed from the same diffuse nebula. The Pleiades is an open cluster 410 light years away. Through the 4504, numerous stars are visible.

Constellations are large, imaginary patterns of stars believed by ancient civilizations to be the celestial equivalent of objects, animals, people, or gods. These patterns are too large to be seen through a telescope. To learn the constellations, start with an easy grouping of stars, such as the Big Dipper in Ursa Major. Then, use a star chart to explore across the sky.

Galaxies are large assemblies of stars, nebulae, and star clusters that are bound by gravity. The most common shape is spiral (such as our own Milky Way), but galaxies can also be elliptical, or even irregular blobs. The Andromeda Galaxy (M31) is the closest spiral-type galaxy to our own. This galaxy appears fuzzy and cigar-shaped. It is 2.2 million light years away in the constellation Andromeda, located between the large “W” of Cassiopeia and the great square of Pegasus.

page 45

Page 44 Page 46
Image 45
Page 44 Page 46
Contents Meade Instruments Corporation How This Manual is Organized Table of Contents 1416 Telescope Assembly Lesson 1 Unpacking and AssemblyMotor Assembly AccessoriesKey to Figures 2a, 2b, and 2c 2325 Sure that this safety washer/knob always remains in place How to Assemble Your TelescopeInsert eyepiece into the focuser assembly Lesson 3 Aligning the Viewfinder Lesson 2 Balancing the TelescopeCorrectly positioned lever Lesson 4 Observing by Moving the Telescope ManuallyKey to Figure Motor drive system assemblyLesson 5 Observing Using Starfinders Arrow Keys Motor Drive System and Starfinder Handbox InstallationObserve the World Around You Slew Speeds Activate the Arrow KeysObserve the Moon Lesson 6 Tracking ObjectsTo Polar Align the Telescope Observe a Star using the Automatic Tracking Feature Lesson 7 Using Starfinders GO to CapabilitiesMoving Through Starfinder’s Menus Initializing Starfinder Location Irvine Training the Drive Check Mount Align Your Telescope Using StarfinderUsing the Guided Tour Which One’s the Alignment Star?Go To Saturn Some Observation Tips Starfinder Controls Part TWO Starfinder Controls and MenusPage Page Starfinder Navigation Exercise How Starfinders Menus WorkComplete Starfinder menu structure To Calculate Sunset timeStarfinder Menus Object MenuObject Menu Options Glossary Menu Event MenuUtilities Menu Setup Menu Time Zone Shift Cleaning Mount and Tripod AdjustmentsPart 3 Caring for Your Telescope Diagonal holder adjustments Spider vane adjustmentsCollimation Alignment of the Optics Correct collimationCorrect collimation Primary mirror adjustmentsABC Star testing the collimationStarfinder Dimensions Insert Barlow into focuser assembly Appendix a Calculating Eyepiece PowerAstronomical Observing Terrestrial ViewingPolar Alignment Understanding Celestial Movements and CoordinatesCelestial sphere Lining Up with the Celestial PoleTwo-Star Polar Alignment Using Setting CirclesTo GO to a user-entered object Appendix C Using Starfinder to Enter Celestial CoordinatesLatitude Chart for Major Cities of the World Appendix D Helpful ChartsStarfinder Glossary Appendix E Basic AstronomyObjects in Space MoonDeep-Sky Objects PlanetsStar Locator Roadmap to the StarsMeade Limited Warranty Meade Instruments Corporation

4504 specifications

The Meade 4504 is a notable member of Meade Instruments’ extensive line of telescopes, designed for both beginners and experienced astronomers. This telescope is known for its user-friendly features and impressive optical performance, making it an excellent choice for stargazers keen on exploring the night sky.

One of the key features of the Meade 4504 is its 4.5-inch aperture, a critical factor that determines the amount of light the telescope can gather. This larger aperture allows users to observe fainter celestial objects, from nebulae to distant galaxies, with clarity and detail. The telescope is equipped with a Newtonian reflector design, which utilizes a primary mirror to collect light and a secondary mirror to direct it to the eyepiece. This design effectively eliminates chromatic aberration, offering sharp and crisp images.

The Meade 4504 also boasts a mount that is robust yet user-friendly. It typically comes with an Altazimuth mount, which allows for smooth movement both vertically and horizontally. This makes it easier to track celestial objects as they move across the sky. The mount's stability is crucial during high-magnification viewing, as it minimizes vibrations and provides a steady image.

A standout feature of the Meade 4504 is its ease of assembly and operation. Designed with beginners in mind, it usually includes a straightforward setup guide that allows users to get their telescope ready for use quickly. Additionally, the telescope often comes with a finderscope, which helps in locating objects in the night sky, a crucial tool for novice astronomers still learning to navigate the cosmos.

In terms of accessories, the Meade 4504 often includes a variety of eyepieces, allowing users to switch magnifications for different viewing experiences. These eyepieces enhance the versatility of the telescope, catering to varied interests, whether it's observing planets within our solar system or examining the details of various star clusters.

Overall, the Meade 4504 represents a balance of quality, convenience, and affordability, making it an ideal choice for anyone looking to embark on a journey of astronomical discovery. It effectively brings the universe closer to home, allowing enthusiasts to explore the wonders of space with ease. Whether you are a first-time observer or someone with a passion for celestial exploration, the Meade 4504 offers a remarkable gateway to the night sky.
Top Page Image Contents