Bedienungsanleitung Bresser AR-90 (Seite 15 von 44) (Englisch)

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ATTENTION:

Never point the telescope directly at or near the Sun at any time! Observing

the Sun, even for the smallest fraction of a second, will result in instant and

irreversible eye damage, as well as physical damage to the telescope itself.

6. Check this alignment on a celestial object, such as a bright star or the

Moon, and make any necessary refinements, using the method outlined

above in steps 3 and 4.

With this alignment performed, objects first located in the wide-field

viewfinder will also appear in the telescope‘s eyepiece.

Choosing an Eyepiece

Looking at or near the Sun will cause instant and irreversible damage to your eye!

fI r s t st e p s

Fig. 14: 8x50 Finder scope assembly

Collimation screws

Eyepiece

Holder

Messier Tips

Further Study....

This manual gives only the briefest introduction to astronomy. If you are interested

in pursuing further studies in astronomy, a few topics are suggested below that are

worth reading up on. Try looking up some of these in the optional Autostar glossary.

Also included below is a small sampling of books, magazines, and organizations

that you might find helpful.

Topics

1. How is a star born? How does a solar system form?

2. How is the distance to a star measured? What is a light year? What is red shift

and blue shift?

3. How are the craters on our Moon formed? Is there water under the surface of the

Moon?

4. What is a black hole? A neutron star? A gamma burster? An Einstein lens?

5. What are stars made of? Why are stars different colors? How is the elementa

composition of a star determined? What is an Lyman Alpha forest?

6. What is the difference between a Type 1 and a Type II supernova?

7. What is the importance of studying the composition of comets? Where do

comets come from?

8. How old is our Sun? Will our Sun evolve into a planetary nebula or go

supernova?

9. What is the Inflationary Big Bang? What is dark matter? What are MACHO‘s?

10. How are extrasolar planets discovered? What is an accretion (or protoplanetary)

disk?

11. What are the differences between elliptical, spiral, and irregular galaxies? Can

globular clusters be older than the universe itself?

Books

1. The Guide to Amateur Astronomy by Jack Newton and Philip Teece

2. The Sky: A User’s Guide by David Levy

3. Turn Left at Orion by Guy Consolmagno & Dan Davis

4. Astrophotography for the Amateur by Michael Covington

5. Observing for the Fun of It by Melanie Melton

6. Will Black Holes Devour the Universe? and 100 Other Questions about

Astronomy by Melanie Melton

Magazines

1. Sky & Telescope, Box 9111, Belmont, MA 02178

2. Astronomy, Box 1612, Waukesha, WI 53187

Organizations

1. Astronomical League, Executive Secretary, 5675 Real del Norte, Las Cruces, NM

88012

2. The Astronomical Society of the Pacific, 390 Ashton Ave., San Francisco,

CA 94112

3. The Planetary Society, 65 North Catalina Ave., Pasadena, CA 91106

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