User manual MEADE 90AZ-ADR REFRACTING TELESCOPE

[. . . ] Instruction Manual Meade 90AZ-ADRB 90mm (3. 5") Altazimuth Refracting Telescope (800) 626-3233 www. meade. com © 2007 WARNING: NEVER USE A MEADE TELESCOPE TO LOOK AT THE SUN!LOOKING AT OR NEAR THE SUN WILL CAUSE INSTANT AND IRREVERSIBLE DAMAGE TO YOUR EYE. EYE DAMAGE IS OFTEN PAINLESS, SO THERE IS NO WARNING TO THE OBSERVER THAT DAMAGE HAS OCCURRED UNTIL IT IS TOO LATE. CHILDREN SHOULD ALWAYS HAVE ADULT SUPERVISION WHILE OBSERVING. MEADE LIMITED WARRANTY Every Meade telescope, spotting scope, and telescope accessory is warranted by Meade Instruments Corporation ("Meade") to be free of defects in materials and workmanship for a period of ONE YEAR from the date of original purchase in the U. S. A. [. . . ] You will probably be able to see a black opening in the rings, known as the Cassini band. Saturn is not the only planet that has rings, but it is the only set of rings that can be seen with a small telescope. Jupiter's rings cannot be seen from Earth at all--the Voyager spacecraft discovered the ring after it passed Jupiter and looked back at it. It turns out, only with the sunlight shining through them, can the rings be seen. Uranus and Neptune also have faint rings. Looking at or near the Sun will cause irreversable damage to your eye. Do not look through the telescope as it is moving. ­7­ Optional color filters help bring out detail and contrast of the planets. Beyond the Solar System: Once you have observed our own system of planets, it's time to really travel far from home and look at stars and other objects. At first, you may think stars are just pinpoints of light and aren't very interesting. The first thing you will notice is that not all stars are the same colors. The color of stars sometimes can tell you about the age of a star and the temperature that they burn at. Very often, you can find double (or binary) stars, stars that are very close together. A galaxy is a large grouping of stars, containing millions or even billions of stars. Some galaxies form a spiral (like our galaxy, the Milky Way) and other galaxies look more like a large football and are called elliptical galaxies. There are many galaxies that are irregularly shaped and are thought to have been pulled apart because they passed too close to--or even through--a larger galaxy. You may be able to see the Andromeda galaxy and several others in your telescope. The two easiest to see in the Northern Hemisphere are the Orion nebula during the winter and the Trifid nebula during the summer. When you become an advanced observer you can look for other types of objects such as asteroids, planetary nebula and globular clusters. And if you're lucky, every so often a bright comet appears in the sky, presenting an unforgettable sight. The more you learn about objects in the sky, the more you will learn to appreciate the sights you see in your telescope. The best exercise for drawing is to observe the moons of Jupiter every night or so. Try to make Jupiter and the moons approximately the same size as they look in your eyepiece. As you get better at drawing, try more challenging sights, like a crater system on the moon or even a nebula. [. . . ] USE THE SPECIFICATIONS TO CALCULATE THE MAGNIFICATION OF YOUR EYEPIECE The power of a telescope is how much it magnifies objects. But if you obtain other eyepieces, you can calculate how much magnification they have with your telescope. Just divide the focal length of the telescope by the focal length of the eyepiece. FOCAL LENGTH OF THE TELESCOPE ÷ FOCAL LENGTH OF THE EYEPIECE = MAGNIFICATION Look at the specifications. You can tell that what the focal length of your eyepiece is as it is always printed on the side of an eyepiece. [. . . ]