Celestron 21030 Bedienungsanleitung

ExloraScope User Guide TL**.qxd 4/9/04 10:00 AM Page 1

Proper Use & Safety

Never look directly at the

sun with the naked eye or

with a telescope unless you

have the proper solar

filter. Permanent and

irreversible eye damage

may result.

Never use your telescope

to project an image of the

sun onto any surface.

Internal heat build-up can

damage the telescope and

any accessories attached to

it.

Never leave the telescope

unsupervised, either when

children are present or

adults who may not be

familiar with the correct

operating procedures of

your telescope.

Never touch the lens

in the eyepiece or the

mirrors inside the

telescope.

Never allow objects

or excess moisture

inside the telescope.

Always handle the

eyepiece gently by

the sides.

Always treat your

ExploraScope with

care—it can be

broken if handled

roughly.

CAUTION!

ExloraScope User Guide TL**.qxd 4/9/04 10:00 AM Page 2

Welcome 1

Eyepiece

Dust Cap

Focuser

ExploraScope

Front Cover

Setup & User’s Guide

Reusable

Box

Tripod Adapter

Carrying Strap

Swivel Base

Your New Celestron ExploraScope

Your new ExploraScope is designed for use

by the entire family and works equally well

for celestial (night sky) or terrestrial (land)

observing. The possibilities for fun and

learning are limitless!

Be sure to read this entire manual for the

safest and most rewarding use of your

ExploraScope. Pay special attention to

safety warnings and always supervise small

children.

Your ExploraScope includes:

•ExploraScope telescope & strap

•Swivel base

•44x eyepiece with dust cap

•Protective front cover

•Adjustable focuser

•Tripod adapter

•Reusable storage & carrying box

•Setup & User’s Guide

Optional accessories are also available from

your Authorized Celestron Dealer. See the

inside back cover for more information.

ExploraScope Technical Specifications

Diameter . . . . . . . . . . . . . . . . . . . . .80 mm

Focal Length . . . . . . . . . . . . . . . . .550 mm

Eyepiece . . . . . . . . . . . . . . . .12.5 mm (44x)

Field of View . . . . . . . . . . . . . . . . . . . . . .1°

Near Focus . . . . . . . . . . . . . . . . . . . . .50 ft.

ExloraScope User Guide TL**.qxd 4/9/04 10:00 AM Page 1

Assembling the ExploraScope

Assembly

Assembling your ExploraScope is simple and

should only take a few moments. Familiarize

yourself with the parts of your telescope first,

then follow the instructions below.

Remove the eyepiece dust cap.

Remove front cover and set it aside.

Always use the front cover to protect the

ExploraScope’s internal components when

not in use.

Place the ExploraScope on its base. You have

the option of using the scope with or without

the base or with a tripod (see step 5).

Turn the focuser to adjust the focus of

objects being viewed as described in

“Using Your ExploraScope.”

To use a standard camera tripod with your

ExploraScope you must first attach the

tripod adapter. Align the adapter screw

and pin with the holes in the base of the

scope and tighten. The ExploraScope is

ready to be attached to a standard photo

tripod.

That’s all there is to it! If you are using the

base or a tripod you will want to find a steady

surface to set up on before observing. Use the

carrying strap or shipping box to make

transporting your ExploraScope safer and

easier.

ExloraScope User Guide TL**.qxd 4/9/04 10:00 AM Page 2

Observing Tips 3

How the ExploraScope Works

The ExploraScope is a reflector type telescope, using two mirrors

to gather and focus light at the eyepiece. This type of telescope

has the advantage of a more compact size for a given aperture.

The diameter of a telescope’s aperture, or opening, is what

determines its ability to see faint objects far away. Magnification

power is determined by the eyepiece. Celestron offers other

eyepieces for your ExploraScope to increase the magnification or

increase the field of view at lower magnifications. Please see the

optional accessories section.

To remove the eyepiece, rotate the focuser clockwise until the

eyepiece is fully extended. Rotate the chrome eyepiece barrel

counterclockwise until the eyepiece is removed.

Using Your ExploraScope

You may set the ExploraScope and observe by swiveling it on its

base, or you can attach it to a tripod using the included tripod

adapter. You may also simply hold the scope by the handles in

your hands or on your lap. For celestial viewing, the stability

provided by the base or a tripod are helpful since distant stars

and planets can take time to locate and can move easily out of

the field of view. For terrestrial observations holding the scope

may work better since you can more easily point to the horizon

and follow moving objects.

To view an object, simply point and look through the eyepiece.

To focus, slowly rotate the focuser until the image in the eyepiece

is clear and sharp. To focus on an object that is closer than your

current target, turn the focusing knob clockwise. For more

distant objects, turn the focusing knob counter clockwise.

Eyepiece

Aperture

Incoming

Light

Magnified Image

Primary

Mirror

Secondary

Mirror

ExloraScope User Guide TL**.qxd 4/9/04 10:00 AM Page 3

Observing Tips

Terrestrial objects must be at least fifty feet away to be

viewed clearly. You may view objects in the daytime sky such

as aircraft and birds, but be careful never to view the sun

with your ExploraScope or any other telescope without using

the proper filtering equipment.

When working with any optical instrument, there are a few

things to remember to ensure you get the best possible image.

If you wear corrective lenses (specifically glasses), you may

want to remove them when observing with an eyepiece

attached to the telescope. If you have astigmatism, corrective

lenses must be worn at all times.

Hazy skies, fog, and mist can make it difficult to focus

when viewing terrestrially. The amount of detail seen

under these conditions is greatly reduced.

Never look across or over objects that are producing heat

waves. This includes cars and asphalt parking lots on hot

summer days or building rooftops. Heat waves will

distort the atmosphere and affect your view in many of

the same ways as uneven window glass.

Never look through window glass. Glass found in

household windows is optically imperfect. This

inconsistency can and will distort images and affect your

ability to focus the telescope. In most cases you will not

be able to achieve a truly sharp image, while in some

cases you may actually see double.

Avoid hazy skies

and fog

Avoid looking

over rooftops

Avoid looking

through window

glass

ExloraScope User Guide TL**.qxd 4/9/04 10:00 AM Page 4

Star Hopping 5

Star Hopping

One way to find celestial objects is to use a process called "star

hopping." Star hopping is done by using bright stars to "guide" you to

an object. For successful star hopping it is helpful to know the field

of view of your telescope. Your ExploraScope has a field of view of

approximately 1°. Therefore, if you know an object is 3° away from

your present location, you just need to move 3 fields of view towards

the desired object. Let's try a popular example: The Andromeda

Galaxy, also known as M31.

To find M31:

Locate the constellation of Pegasus, a large square visible in the

fall in the eastern sky, moving toward a point overhead, and in

winter months it's overhead moving toward the west.

Start at the star in the northeast corner—Alpha (α)

Andromedae.

OMEDA

GREAT NEBULA

M31

M32 GLORIA FREDERIKA

NGC7662

NGC7

ExloraScope User Guide TL**.qxd 4/9/04 10:00 AM Page 5

Star Hopping

Finding M31 continued...

Move northeast approximately 7° (seven fields of view). There

you will find two stars of equal brightness—Delta (δ) and Pi (π)

Andromeda—about 3° apart.

Continue in the same direction another 8°. There you will find

two stars—Beta (β) and Mu (µ) Andromedae—also about 3°

apart.

Move 3° northwest—the same distance between the two stars—

to the Andromeda galaxy.

Star hopping to the Andromeda Galaxy (M31) is a snap, since all the

stars needed to do so are visible to the naked eye. Using this

technique you can locate many objects in the sky.

NGC752

ANDROMEDA

GREAT NEBULA

M31

M32

ExloraScope User Guide TL**.qxd 4/9/04 10:00 AM Page 6

Collimation Adjustment

Collimation is the optical alignment of your telescope’s mirrors.

Your ExploraScope was collimated at the factory and should never

need to be adjusted. If for some reason the telescope is dropped or

damaged it may be necessary to adjust the alignment of the mirrors.

Do not alter the collimation unless it’s necessary.

Checking the Collimation

Remove the eyepiece: rotate the focuser clockwise until the

eyepiece is fully extended. Rotate the chrome eyepiece barrel

counterclockwise until the eyepiece is removed.

With the eyepiece removed, look down the focuser and you will

see an image of the secondary mirror reflected back in the

primary mirror.

If the secondary mirror is not perfectly centered in the primary

mirror then your telescope is out of alignment. To correct this,

you must adjust the primary collimation screws located at the

rear of the tube.

Primary

Mirror

Secondary

Mirror

ExloraScope User Guide TL**.qxd 4/9/04 10:00 AM Page 7

8Collimation Adjustment

Correcting the Collimation

The ExploraScope has three holes at the rear of the tube for

accessing collimaton adjustments. Each hole has a alignment screw

that will tilt the mirror when tightened or loosened. The center screw

is not related to collimation and should not be adjusted. To align

your ExploraScope:

Remove the caps covering each of the three collimation screws.

Do not remove the cap in the center of the tube.

Using a Phillips screw driver, adjust the collimation screws until

the image of the secondary mirror moves towards the center of

the primary mirror. In order to tighten a screw, it may be

necessary to slightly loosen the remaining screws.

With both mirrors aligned you should see the silhouette of the

secondary mirror positioned in the center of the primary mirror.

Carefully replace the rubber protective covers over the

adjustment holes and replace the eyepiece

To make collimation easier and more precise, Celestron offers an

optional Collimation Tool (#94183) that aides in aligning your eye to

the center of the optical path.

Primary

Mirror

Secondary

Mirror

ExloraScope User Guide TL**.qxd 4/9/04 10:00 AM Page 8

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