Discovery Telecom 50mm Student Bedienungsanleitung

Space Exploration Gear

50mm Student

Telescope

AGES

50mm Student

Telescope

INSTRUCTION MANUAL

WARNING :

Contains button or coin cell battery.

Hazardous if swallowed - see instructions.

WARNING

CHOKING HAZARD – Small parts. Not for children under 3 years.

CONTENTS

Contents

50mm Objective Lens

Pan-Tilt Alt-Azimuth Mount

Tripod with accessory tray

Optical Tube Assembly (OTA)

with Dew Shield

Focus Wheel

Diagonal

1.25” Eyepieces

(12.5mm and 20mm)

Red Dot Viewﬁnder

Parts Overview

CONTENTS

Instruction Manual, &

Downloadable Planisphere Visit:

www.exploreone.com/pages/product-manuals

Assembly:

Note: We recommend assembling your telescope for the ﬁrst time in the daylight or in a

lit room so that you can familiarize yourself with assembly steps and all components.

• Open the tripod until the tripod spreaders are fully extended. Put the

accessory tray in place and turn it clockwise until stable. To set the tripod

height, turn the pressure ﬁtting on each leg counterclockwise until loose.

Extend or retract the leg to the desired setting, then tighten the pressure

ﬁtting until snug.

• Thread the panhandle clockwise onto the tripod head.

• Set the optical tube assembly on the tripod head and align the tab on the

bottom of the telescope tube with the slot in the tripod head. Thread the

front tension wheel until snug, then tighten the side tension thumbscrew.

Be careful not to over-tighten either screw.

• Insert the diagonal into the focuser and secure it by tightening the

thumbscrews.

• Slide the red dot viewﬁnder into the ﬁnder bracket that is already

mounted on the telescope tube.

• Place your chosen eyepiece into the diagonal. We recommend starting

with the 20mm because it will provide the widest ﬁeld of view.

HOW TO SET UP

1. 50mm Objective Lens

2. Pan-Tilt Alt-Azimuth Mount

3. Tripod with accessory tray

4. Optical Tube Assembly (OTA)

with Dew Shield

5. Focus Wheel

6. Diagonal

7. 1.25” Eyepieces

(12.5mm and 20mm)

8. Red Dot Viewﬁnder 2

TELESCOPE TERMS TO KNOW:

Diagonal: A mirror that deﬂects the ray of light 90 degrees.

With a horizontal telescope tube, this device deﬂects the light upwards so

that you can comfortably observe by looking downwards into the eyepiece.

The image in a diagonal mirror appears upright, but rotated around its

vertical axis (mirror image).

Focal length: Everything that magniﬁes an object via an optic lens has a

certain focal length. The focal length is the length of the path the light travels

from the surface of the lens to its focal point. The focal point is also referred

to as the focus. In focus, the image is clear. In the case of a telescope, the

focal length of the telescope tube and the eyepieces are used to determine

magniﬁcation.

Lens: The lens turns the light that falls on it around in such a way so that

the light gives a clear image in the focal point after it has traveled a certain

distance (focal length).

Eyepiece: An eyepiece is a system made for your eye and comprised of one

or more lenses. In an eyepiece, the clear image that is generated in the focal

point of a lens is captured and magniﬁed still more.

Magniﬁcation: The magniﬁcation corresponds to the difference between

observation with the naked eye and observation through a magnifying device

like a telescope. If a telescope conﬁguration has a magniﬁcation of 30x, then an

object viewed through the telescope will appear 30 times larger than it would

with the naked eye. To calculate the magniﬁcation of your telescope setup,

divide the focal length of the telescope tube by the focal length of the eyepiece.

INSTRUCTION MANUAL

Using/Aligning the Red Dot Viewﬁnder:

The viewﬁnder is powered by a CR-2032 battery that is included. Before using

the viewﬁnder for the ﬁrst time, remember to remove the plastic insulator

that is blocking the battery from connecting.

When it is time to replace the battery, remove the battery cap by loosening

the set screw. Take out the old battery and slide a new battery in place with

the positive side showing. Replace the cap, and tighten the set screw.

For the viewﬁnder to be effective, it must be aligned. To do this:

• Insert the 20mm eyepiece into the diagonal and power on the viewﬁnder by

sliding the switch on its right side to an “On” position.

• Point the eyepiece at an easy to identify target like a telephone pole that is

approximately 200 yards away. Center the object in the eyepiece. Lock the

telescope into place by tightening the panhandle.

• Without moving the telescope, position the red dot using the two

adjustment screws so that it shares the same view as the one in your

eyepiece. The front screw will move the viewﬁnder up and down, and the

other will move it side to side. Your viewﬁnder is now aligned.

Note: To preserve battery life, don’t forget to turn off the viewﬁnder after use.

Did you know?

The magnifying power of a telescope is determined by dividing the focal

length of the telescope by the focal length of the eyepiece. This means

that as the focal length of your eyepiece increases, the magnifying power

decreases.

The Red Dot Viewfinder is

CR-2032 (3V); if a replacement is

necessary, remove cap (Fig. 1) by

unscrewing set screw (Fig. 2) and

sliding battery towards the front.

Slide new battery in place with the

positive (+) side showing. Replace

cap and tighten with

set screw (Fig. 2).

Fig. 1 Fig. 2

Front

Red Dot Viewfinder

(bottom view)

El Visor Red Dot es

impulsado por un tipo de batería

CR-2032 (3V); si un reemplazo es

necesario, retire la tapa (fig. 1),

desenroscando el tornillo de ajuste

(fig. 2) y la batería de deslizamiento

hacia la parte delantera. Deslice la

pila en el lugar con la positiva

proyección lateral (+). Reemplace

la tapa y apriete con

el tornillo de

fijación (fig. 2).

fig. 1 fig. 2

frente

Red Dot visor

(vista desde abajo)

English

Le Dot Viseur rouge est

alimenté par une batterie de type

CR-2032 (3V), si un remplacement

est nécessaire, enlever le bouchon

(Fig. 1) en dévissant la vis de

réglage (Fig. 2) et la batterie de

glissement vers l'avant. Glisser la

nouvelle pile en place avec la

borne positive (+) côté montrant.

Remettre le bouchon et

le serrer avec

la vis de

pression

(Fig. 2).

Fig. 1 Fig. 2

de devant

Red Dot Viseur

(vue de dessous)

FrenchSpanish

Using your telescope:

After you have aligned your viewﬁnder, you are ready to start observing!

Put the 20mm eyepiece into the diagonal to get the widest ﬁeld of view. This

wider ﬁeld of view will make it easier to locate and track objects.

Use the panhandle to move the scope up, down and side to side until your

target comes into view in the eyepiece. It is important to remember that

the rotation of the Earth means objects will move out of your eyepiece fairly

quickly. Once you have found and focused on your desired target, you can

track it as it journeys across the night sky using the panhandle.

For a closer look at an object, you can insert the 12.5mm eyepiece.

The magniﬁcation will increase from 30x to 48x.

Cleaning:

Your telescope is a precision optical device and keeping the optics free

of dust and dirt is crucial for optimal performance. To clean the lenses

(objective and eyepiece) use only a photo-grade soft brush or a lint-free

cloth, like a microﬁber cloth. Do not press down too hard while cleaning,

as this might scratch the lens. Ask your parents to help if your telescope is

really dirty. f necessary, the cleaning cloth can be moistened with an optical

glass cleaning ﬂuid and the lens wiped clean using very little pressure. Do

not use harsh detergents!

Make sure your telescope is always protected against dust and dirt.

After use, leave it in a warm room to dry off before storing.

POSSIBLE OBJECTS

FOR OBSERVATION:

Terrestrial objects

Take note of the examples below, including

Mount Rushmore and the golf course.

Start with the 20 mm eyepiece and focus

until the image is clear. After mastering

the 20 mm eyepiece, switch to the 12.5

mm eyepiece and practice scanning and

focusing until the image is clear. Choose

several terrestrial objects to practice

focusing on, but never point your telescope

at or near the sun, or you risk blindness.

The Moon

Diameter: 3,476 km

Distance: Approximately 384,401 km

The Moon is the Earth’s only natural satellite,

and it is the second brightest object in the

sky (after the Sun). Although it is our closest

neighbor, a lot of people have never really

taken a good long like at the Moon. With

your telescope, you should be able to see

several interesting lunar features. These

include lunar maria, which appear as vast

plains, and some of the larger craters. The

best views will be found along the terminator,

which is the edge where the visible and

cloaked portions of the Moon meet.

f=20 mm f=12.5 mm

The Moon

f=20 mm f=12.5 mm

Terrestrial Images

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