Bedienungsanleitung Bresser 4701102 (Seite 34 von 40) (Englisch)

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ringdivisionwithinSaturn'srings,theso-called"Cassinidivision",cannormallybeseen

inthetelescope.Titan,thelargestofSaturn's62moons,isalsovisibleasabright,star-

shapedobjectnotfarfromtheplanet.Undergoodvisibilityconditions,upto6Saturn

moons can be observed in the telescope.

Deep sky objects

Inordertofindconstellations,singlestarsor"deepskyobjects",theuseofastarchartis

recommended. In the following, various examples of deep sky objects are listed:

The stars are huge gaseous objects that glow independently because they generate

energy in their centre through nuclear fusion. Due to their enormous distance, all stars

appear as needle-sharp points of light, regardless of the size of the telescope used.

The nebulae are extended interstellar gas clouds and dust clouds from which new stars

are formed. The most impressive nebula is without question the Great Orion Nebula, a

diffusenebulathatlookslikeafaint,fibrous,greycloud.M42is1600light-yearsaway

from Earth.

An open star cluster consists of a loose group of younger stars, all of which have only

recently emerged from a single diffuse nebula. The Pleiades form an open star cluster

atadistanceof410lightyears.Severalhundredstarscanbeobservedinthetelescope.

Constellations are two-dimensional, imaginary star patterns which ancient civilizations

believed to be heavenly equivalents of objects, animals, humans or gods. These groups

of stars are far too large to be seen in their entirety in a telescope. If you want to learn

the constellations, start with a distinctive group of stars - for example, the Great Dipper

in the constellation of the Great Bear. You will then use a star chart to help you decipher

the other constellations.

The galaxies are gigantic clusters of stars, nebulae, and star clusters, all held together

by their mutual gravity. They are mostly spirally shaped (this also applies to our

Milky Way), but many galaxies can also look like elliptical or irregular light spots. The

Andromeda galaxy (M31) is the closest spiral galaxy to us. The sight of this Milky Way

system resembles that of a blurred fog spindle. At a distance of 2.2 million light years

theyarefoundintheconstellationAndromeda.Itstandshalfwaybetweenthebig"W"of

Cassiopeia and the star square of Pegasus.

With increasing observation experience, you can also dedicate yourself to more

sophisticated observation objects such as globular clusters, planetary nebulae or comets

that appear from time to time.

The more objects you "spy", the more you will be able to estimate the observation

conditions and determine which objects are worthwhile in this night. It also makes sense

to record the observed objects and the viewing conditions in a notebook.

One of the best ways to capture what you have seen is by drawing. At the same time the

sense for details and fine nuances is sharpened here. Many of the professional journals

and internet forums for astronomy offer opportunities to exchange information with

other amateur astronomers.

Internet resources such as www.astrotreff.de or www.vds-astro.de are well suited to

deepening one's own knowledge and gaining new ideas. You will notice that as your

experience increases, so does your enjoyment of your hobby!

Saturn is one of the most worthwhile objects of

observation, at least within the solar system.

M31, the Andromeda galaxy, is one of the easiest

objects to find and observe on winter evenings.

The Pleiades are probably the most impressive open

star cluster in the northern sky.

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