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STAR50APP

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1-ANHA~DLE MOUNT

INSTRUCTIO:i MANUAL

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Where

Learning

Meats

Fun

Customer

Service:

Call

1-866-252-3811

NS

R-=LO

MJO

FOLLO//

THE

INSTRUCTIONS

BEFORE

USE

IMPORTANT

SAFETY

INSTRUCTIO

l<r-tP

THESE

lf~STRUCTIONS

FOR

LATER

USE

•

UN

WARNING·

NEVER

ATTEMPT

TO

OBSERVE

THE

SUN

WITH

THIS

DEVICE!

OBSERVING

THE

SUN

-

EVEN

S

OMENT:

WILL

CAUSE

INSTANT

AND

IRREVERSIBLE

DAMAGE

TO

YOUR

EYE

OR

EVEN

BLINDNESS.

:~;

~:AGE

IS

OFTEN

PAINLESS,

SO

THERE

IS

NO

WARNING

TO

THE

OBSERVER

THAT

THE

DAMAGE

HAS

OCCURRED

UNTIL

IT

IS

TOO

LATE.

DO

NOT

POINT

THE

DEVICE

AT

OR

NEAR

THE

SUN.

DO

NOT

LOOK

THROUGH

THE

DEVICE

AS

IT

IS

MOVING.

CHILDREN

SHOULD

ALWAYS

HAVE

ADULT

SUPERVISION

WHILE

OBSERVING.

•

RESPECT

PRIVACY:

WHEN

USING

THIS

DEVICE,

RESPECT

THE

PRIVACY

OF

OTHER

PEOPLE.

FOR

EXAMPLE.

DO

NOT

USE

IT

TO

LOOK

INTO

PEOPLE'S

HOMES.

@

•

CHOKING

HAZARD:

CHILDREN

SHOULD

ONLY

USE

DEVICE

UNDER

ADULT

SUPERVISION.

KEEP

PACKAGING

MATERIALS

LIKE

PLASTIC

BAGS

AND

RUBBER

BANDS

OUT

OF

THE

REACH

OF

CHILDREN

AS

THESE

MATERIALS

POSE

A

CHOKING

HAZARD

.

•

RISK

OF

BLINDNESS:

NEVER

USE

THIS

DEVICE

TO

LOOK

DIRECTLY

AT

THE

SUN

OR

IN

THE

DIRECT

PROXIMITY

OF

THE

SUN.

DOING

SO

MAY

RESULT

IN

A

PERMANENT

LOSS

OF

VISION.

•

RISK

OF

FIRE:

DO

NOT

PLACE

DEVICE,

PARTICULARLY

THE

LENSES,

IN

DIRECT

SUNLIGHT.

THE

CONCENTRATION

OF

LIGHT

RAYS

COULD

CAUSE

A

FIRE.

•

DO

NOT

DISASSEMBLE

THIS

DEVICE:

IN

THE

EVENT

OF

A

DEFECT,

PLEASE

CONTACT

YOUR

DEALER.

THE

DEALER

WILL

CONTACT

THE

CUSTOMER

SERVICE

DEPARTMENT

AND

CAN

SEND

THE

DEVICE

IN

TO

BE

REPAIRED

IF

NECESSARY.

•

DO

NOT

SUBJECT

THE

DEVICE

TO

TEMPERATURES

EXCEEDING

60

°C

(1,40

°FI.

•

DISPOSAL:

KEEP

PACKAGING

MATERIALS,

LIKE

PLASTIC

BAGS

AND

RUBBER

BANDS,

AWAY

FROM

t

CHILDREN

AS

THEY

POSE

A

RISK

OF

SUFFOCATION.

DISPOSE

OF

PACKAGING

MATERIALS

AS

LEGALLY

REQUIRED.

CONSULT

THE

LOCAL

AUTHORITY

ON

THE

MATTER

IF

NECESSARY

AND

RECYCLE

MATERIALS

WHEN

POSSIBLE.

•

THE

WEEE

SYMBOL

IF

PRESENT

INDICATES

THAT

THIS

ITEM

CONTAINS

ELECTRICAL

OR

ELECTRONIC

A

COMPONENTS

WHICH

MUST

BE

COLLECTED

AND

DISPOSED

OF

SEPARATELY.

•

NEVER

DISPOSE

OF

ELECTRICAL

OR

ELECTRONIC

WASTE

IN

GENERAL

MUNICIPAL

WAST~.

COLLECT

AND

DISPOSE

OF

SUCH

WASTE

SEPARATELY.

•

MAKE

USE

OF

THE

RETURN

AND

COLLECTION

SYSTEMS

AVAILABLE

TO

YOU,

OR

YOUR

LOCAL

RECYCLING

PROGRAM.

CONTACT

YOUR

LOCAL

AUTHORITY

OR

PLACE

OF

PURCHASE

TO

FIND

OUT

WHAT

SCHEMES

ARE

AVAILABLE.

•

ELECTRICAL

AND

ELECTRONIC

EQUIPMENT

CONTAINS

HAZARDOUS

SUBSTANCES

WHICH,

WHEN

DISPOSED

OF

INCORRECTLY,

MAY

LEAK

INTO

THE

GROUND.

THIS

CAN

CONTRIBUTE

TO

SOIL

AND

WATER

POLLUTION

WHICH

IS

HAZARDOUS

TO

HUMAN

HEALTH,

AND

ENDANGER

WILDLIFE.

•

IT

IS

ESSENTIAL

THAT

CONSUMERS

LOOK

TO

RE-USE

OR

RECYCLE

ELECTRICAL

OR

ELECTRONIC

WASTE

TO

AVOID

IT

GOING

TO

LANDFILL

SITES

OR

INCINERATION

WITHOUT

TREATMENT.

BUTTON/COIN

BATTERY

WARNING:

THIS

PRODUCT

CONTAINS

A

BUTTON

OR

COIN

CELL

BATTERY.

A

SWALLOWED

BUTTON

OR

COIN

CELL

BATTERY

CAN

CAUSE

INTERNAL

CHEMICAL

BURNS

IN

AS

LITTLE

AS

TWO

HOURS

AND

LEAD

TO

DEATH.

DISPOSE

OF

USED

BATTERIES

IMMEDIATELY

KEEP

NEW

AND

USED

BATTERIES

AWAY

FROM

CHILDREN.

IF

YOU

THINK

BATTERIES

MIGHT

HAVE

BEEN

SWALLOWED

OR

PLACED

INSIDE

ANY

PART

OF

THE

BODY,

SEEK

IMMEDIATE

MEDICAL

ATTENTION.

2

What's Included:

Phonf!

not /ncludtd.

Parts Overview

1.

50

mm

Objective Lens

2.

Pan

TIit

Mount

3.

Tripod

with

accessory

tray

4. Optical Tube Assembly (OTA) with Dew Shield

5.

Focus Wheel

6.

Dlegonal

7.

1.25"

Eyepieces

(12.5

mm

and

20

mm)

B.

Smertphone Mount

w/Bluetooth

9.

Panhandlo

10.

Focuser

Avallabl• oownloads Visit:

www.esmanuats.com

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Re

0

When

l.earnlfll

M••U

fun

;

How

To

Set

Up

Not•·

we

recommend assembling

your

telescope

for

the

first

time

In

the

dayllght

or

In a

llt

room

so

that ~ou can famlllarlze yourself with assembly steps and all components.

• Open

the

tripod

until

the

tripod

spreaders are

fully

e~tended.

Put

the

access?r~

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.

Using Your Telescope:

Put

the

20mm

eyepiece

into

the

focuser

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.

To

get

a closer

look

at

an object, take

out

the

20mm

ey~pie~e. and replace

it

with

the

12.5mm eyepiece.

This

w,11

increase

the

magnification

from

30x

to

48x.

Focal Length

600mm

Eyepiece Magnification

20mm

30x

12.5mm

48x

Note: Terrestrlal objects wlll appear reversed due

to

the

optical setup.

This

rotation

Is

perfectly normal for a retractor using a standard dlagonal, and

It

wlll

not affect astronomical viewing.

Cleaning:

Yot

te:esc~pe is a precision

optical

device

and

keeping

the

optics

free

of

dust

and

dirt

is crucial

for

;~~t-~re;e

0

;i';~n~-~-

To

cl~an

~he

lenses

(objective

and

eyepiece)

use

only

a

photo-grade

soft

brush

scratch

th

1 • 1 e a micro~iber

cloth.

Do

not

press

down

too

hard

while

cleaning, as

this

might

and the le~s

e::r

necessary.

tne

cle~ning

cloth

can

be

moistened

with

an

optical

glass cleaning fluld

fluids directly gnt cl~an using

very

little

pressure. The eyepiece

Is

NOT

waterproof

so

do

not spray

cleaning

an

e 1

°t e glass

or

dip

It

In water. Never use harsh detergents! After you have finished

yep ece, allow

It

to

fully dry before storing.

Make sure your telescop . 1

dirt. e is a ways

protected

against

dust

and

After use, leave

it

in a war

m

room

to

dry

off

before

storing.

Push

ulde

and

frrmove the ba9ery•

..

,.,

...........

----

Remove

dust protection

cap.

No

focus

possible

Bad

quality

Adjust

focus

using

focus

wheel.

Wait

for temperature

to

balance out.

Never

observe through a glass surface

such

as

a window.

4

How

to

Install & Use the App

Download the App

To

download the appllcatlon:

Method

1:

Using

your

smart

device, scan the

QR

code

on

the

left

to

download

and install the ARTelescope-3L App.

Method

2:

Download

and install the ARTelescope-3L

App

by

searching

through

the Apple Store

or

Google Play.

To activate the appllcatlon:

After

installing, open the application. For the ARTelescope-3L

to

function

properly, you will need

to

allow

it

to

access the camera, location and

Bluetooth functions on your smart device. Next, select your preferred

language. Activate the application

by

scanning the activation

QR

code

pictured

here.

Important: Please keep this activation

code to be able to activate more devices.

Using the ARTelescope-3L App:

f I I •

,,

;

ARTelescope-3L

Activation Code

After

launching the application,

tap the

"Star Seeking" icon in the middle

of

the

screen

to

access

the

Bluetooth interface. Note: Bluetooth

on

your device wlll need

to

be

enabled.

If

the

device

is

placed in the telescope bracket, click "Automatic Search"

to

match

and

enter

the

AR star

search module.

To access the language selection function:

Go

to

the

home

menu screen and click

the

globe

icon in the

upper

left

corner

to

enter

the

language

switch function.

•

C:TIIQ

5

E:>·CF=L((•

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e>r----.~e

Where

Learnln1

Jun

To access

the

3D assembly

animation:

Go

to

the

home menu screen, click the

upper

right

corner

to

enter

the

30

•

the t~lescope, and click the animation play

button

to

watch

the

30

assemilsse~bly

an,~ation

of

rotating interface. ! Y animation

1n

the

freely

t"'I

•

( X

f'I

I'

I~

I

r;TAR

~FFKINII

I

~--··

[J;f

To access the encyclopedia for constellations:

Go

to

the

home menu screen, click the encyclopedia icon in

the

lower

left

corner

to

access information

on constellations and solar system objects. Tap

on

an

object

for

information

that

includes pictures, text

and audio.

,,

E-

\Pl

r

Rf-

'5TAR

SffKINll

I

t"'I

•

t •

To access the encyclopedia for solar system objects:

Go

to

the encyclopedia screen, click

the

"solar system" icon

to

access

information

about

the solar

system objects.

Tap

on an

object

for

information

that

includes pictures,

text

and

audio.

If\,.

l(l(WI

(l'.,\

_.

e

....

-

,.

e

6

To access

the

constellation quiz function:

Go

to

the

main

home

screen

and

tap

the

icon

in

the

lower

left

corner

to

enter

the

multiple

choice

quiz

mode.

To

access

the

AR constellation photo function:

Go

to

the

home

menu

screen,

click

the

AR

constellation

function

in

the

lower

right.

The

names

and

outlines

of

constellations

in

the

viewing

area will appear

as

you

move

your

device

across

the

night

sky. You

can

take

a

photo

of

the

constellation

in AR

mode

by

allowing

the

application

to

access

your

device's camera.

Notr.ss:

I-

)(Pt

f,

IJf

~TAR

~rr1e,,.r,

t

•

Th;;,

c~r,;::,lication

needs

to

keep

the

device

network

in a

normal

state

during

the

activation

process.

• Permission

to

open

the

camera, album,

and

location

of

the

device

will

pop

up

when

the

App

is

launched

for

the

first

time.

Please

tap

"Allow"

to

confirm

approval.

•

Gyroscope

standard

of

the

equipment.

When the

position

deviation

of

the

star

finder

module

is

large,

manual

calibration

of

the

equipment's

position

and d1rect1on

can

be

carried

out

by

calibrating

the

Magnetometer

in

settings.

I

"-1'1'

Id

/<;TAR

~rt:'ktNn

1

Observing Tips:

Star

hopping

Star

hopping

is a

technique

used

by

amateur

a

st

r~>nomers

to

navigate

the

night

sky.

By

using

easily

recognizable

constellations

and

asterisms

as a

guide,

an

observer

can

locate

stars

and

other

objects.

For

example,

Polaris,

which

is

commonly

ref~rre~

to

as

The

No~th Star,

can

be

located

quickly

using

star

hopping.

First,

find

the

Big

Dipper

astensm

tn

the

Ursa

Ma1or

constellation.

The

popular

pattern

is

defined

by

seven stars,

and

the

two

stars

on

the

front

edge

of

the

Big

Dipper's

"bowl"

are

Merak

and

Dubhe.

Next,

draw

an

imaginary

line

from

the

bottom

star

(Merak)

on

this

front

edge

through

the

top

star

(Dubhe)

on

the

front

edge.

Follow

the

line

~o

the

first

bright

star

you

see.

That

should

be

Polaris.

Finally,

to

verify

your

finding,

locate

the

Little

Dipper

asterism.

Polaris is

the

anchor

star

at

the

end

of

the

Little

Dipper's

"handle."

POLAR

STAR

Alpha

LITTLE

DIPPER

~to

.....

---.Kochab

---4

Phrrkod

Eta

Gamma

Ph«do

Alioth

A/car

Alkaid

BIG

DIPPER

Note:

The

positioning of the Big Dipper

in

relation

to

the Little Dipper

does

not change, but the

orientation of

both

in

the night

sky

will rotate throughout the

year

due

to

the motion

of

the Earth.

Possible Objects

for

Observation:

What

you

can

observe

at

any

one

time

in

your

telescope

depends

on

several

factors

beyond

aperture

and

magnification.

These

factors

include

location,

date,

time

and

sky

conditions.

The

following

are all

objects

that

can

be

seen

with

the

unaided

eye

and/or

binoculars.

Your

telescope

can

enhance

views

of

any

of

these

objects

if

the

observing

conditions

are

right.

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

shadowed

portions

of

the

Moon

meet.

Image credit: Howard

Esklldsen

Note: Images are for llluslratlon purposes only. Quality of your Image may very depending upon atmospheric conditions

and

location.

8

Plelades Star

Cluster(M45):

Orlon

Nebula(M42):

Right

ascension:

05:

35.4

(hours:

minutes)

Decllnatlon:

-05:

27

(degrees:

minutes)

Distance:

Approximately

1,344

light

years

The

Orion

Nebula

is a

vast

star-forming

region

located

in

the

"sword"

branching

off

of

the

famous

Orion's

Belt.

Also

known

as Messier

42,

this

diffuse

nebula

is

bright

enough

to

see

with

the

unaided

eye

-

although

it

will

only

appear

as a

slightly

foggy

star.

However,

with

your

telescope,

you

can

see

many

of

the

beautiful

details,

such

as

the

billowing

clouds

of

gas

and

dust

where

new

stars

are

being

born.

Image credit: NASA, ESA,

M.

Robberto (Space Telescope Science lnstltute/ESAI

and the Hubble Space Telescope Orlon Treasury Project Team

Right

ascension:

03:

47.0

(hours:

minutes)

Declination: +24:

07

(degrees:

minutes)

Distance:

Approximately

444

light

years

The

Ple1ades

Star

Cluster

is a

group

of

brilliant

blue

stars located in

the

Taurus

Constellation.

Also

known

as

Messier

45

or

"Seven

Sisters",

this

open

star

cluster

consists

of

more

than

1,000

confirmed

stars,

although

an

average

of

only

six

are

visible

to

the

unaided

eye.

With your telescope,

you

can

quickly

reveal

some

of the more elusive

members

of

this

legendary

and

beautiful cluster.

Image

credit:

NASA/JPL-Callech/UCLA

Andromeda

Galaxy(M31):

Image

credit:

NASA/JPL-Caltech

D~mbbell

Nebula(M27)

Rtght

a

Decllnasf

en_slon:

19:59.6

(hours:

minutes)

o·

ton.

+22:43

(degrees·

minutes)

1

stance· A . •

Right ascension:

00:

42.7

(hours:

minutes)

Decllnatlon: +41: 16

(degrees:

minutes)

Distance:

Approximately

2.54

million

light

years

The

Andromeda

Galaxy

is

the

closest

major

galaxy

to_our

own

Milky

Way.

Also

known

as

Messier

31,

this

fam?us

spiral

galaxy

is

part

of

the

Local

Group

of

galax1~s.

Although

it

is

technically

bright

enough

to

see

with

the

unaided

eye

under

a

very

dark

sky,

your

~elescope

may

show

its

bright

center,

hints

of

its

sp~ral

structure

and

its

much

smaller

companion

galaxies

known

as

M32

and

Mll0.

~he

Du

• Pprox1mately

1,360

light

years

1::

,.,

rnbbell

Nebula

was

the

first

planetary

nebula

'"r

disc

In

th overed.

It

Is

one

of

the

most

popular

~ights

b,

110

~

iulpecula

constellation.

Easy

to

find

with

ths

bu ars

and

amazing

in

a

telescope,

the

shape

of

to a dright,

double-lobed

nebula

has

been

compared

aadedu~bbell, an

hourglass

or

an

apple

core

As

an

the D onus,

the

white

dwarf

that

lies

at

the

heart

of

its

kin~rnbbell

Nebula

Is

larger

than

any

other

star

of

Image

credit: NASA/JPL-C.altech/Harnrd-Sm1thsonillln CfA

N01e,

frna

ges

•re

for illustr-ition purposes

only.

Quality of your im.a9e

may

very depending upon

•tmospheric

conditions

.and

lout/on.

9

Types

Of

Telescopes:

Light

Secondary Mirror

--

Light

Reflector

Primary Mirror

(Objective)

A reflector telescope uses mirrors

to

gather and

focus

light.

Light

enters

the

telescope

through

its

open

front

end and travels

to

the concave primary

mirror

at

the

back.

From

there

the

light

is

reflected

back

up

the

tube

to

a flat secondary mirror, which sits

at

a

45°

angle

in

relation

to

the

eyepiece.

Light

bounces

off

of

this

secondary mirror and

out

through

the

eyepiece. A

reflnctor

telescor.e

1s

designed

for

astronomical use. Terrestrial objects may appear

inverted,

sidewa~,s

o,

at

,r

;;ng!c

depending

on

how

your

tube

is oriented due

to

optical design, This

rotation

is

perfec:t!f

ricrr'lal

,m

<11,

Nn·,-:tonian

reflectors and will

not

affect astronomical viewing.

Objective

Lens

Light

:

t

--

:

Light

,--

Retractor:

A refracting telescope uses a collection

of

lenses

to

gather

and

focus

light.

A retractor'$ 1iews will

be upside

down

if

a diagonal

is

not

in use. A standard

diagonal

will

generate

a

"right

side

up"

image,

however,

It

will rotate

the

image

on

the

vertical axis

(mirror

image).

To

get

the

"right

side

up"

image

without

the

rotation, you will need

to

use a special

diagonal

with

an

erect

image

prism.

Correcting

Lens

Light

--J~-------------------==-

Secondary Mirror

Light

Primary Mirror (Objective)

Catadloptrlc:

A

catadioptric

telescope uses a combination

of

mirrors

and lenses

to

gather

and

focus light. Popular

catadioptric

designs

include

the Maksutov-Cassegrain

and

Schmidt-Cassegrain.

10

Telescope Terms

to

Know:

Objective

Lens

Eyepiece - I

Eyepiece

- - , Focal Length

'"'I'~'

~-

_J

{mm)

Aperture

(mm) b

•-------------~:

o,.,/~,

foal,.,.,,

Aperture:

I

L-------

Aperture

(mm)

Eyepiece

-

Secondary

Mirror

L

Focal

Length Telescope

(mm)

- - 7 Focal Length

I Eyepiece

__

J

(mm)

Focal

LengthTelescope

(mm)

_____

J

Primary

Mirror

(ObjectiveI

This figure,

'.'\lh1ch

is usually expressed in millimeters. is

the

diameter

of

a

telescope's

light-gathering

surface

(objective

lens

in

a

retractor

or

primary

mirror

in

a

reflector).

Aperture

is

the

key

factor

in

determining

the

brightness

and

sharpness

of

the

image.

Objective Lens:

The

objective

lens is

the

main

light-gathering

component

of

a

retractor

telescope.

It

is

actually

composed

of

several lens elements.

Diagonal:

This accessory houses 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

lhe

eyepiece.

The

image

in

a

standard

diagonal

mirror

appears

upright.

but

rotated

around

its

vertical axis

(mirror

image).

To

get

an

image

without

this

rotation,

you

will

need

to

use

a

special

diagonal

with

an

erect

Image

prism.

Eyepiece:

An

eyepiece is an

optical

accessory

comprised

of

several lens

elements.

It

determines

the

magnification

of

a

particular

observing

setup.

Primary Mirror:

The

primary

mirror

is

the

principle

light-gathering

surface

of

a

reflector

telescope.

Secondary Mirror:

A

secondary

mirror

is a small

mirror

that

sits

at

a 45•

angle

in

relation

to

the

primary

mirror

of

a

reflecting

telescope.

Light

from

the

pri,:nary mi,:ror IS

reflect~d

back

up

the

tube

to

the

secondary

mirror.

The

light

is

directed

from

this

mirror

up

into

the

eyepiece.

,,

E)·CF=L~RE

ONE

Wtlere

Learnin

Meets

Fun

Aperture

102mm

- - - - -

-=u-~

Telescope

Focal

Lenglh

Eyepiece

Focal

Length

20mm

Magnification:

1000mm

The

magnification corresponds

to

the difference between observation

with

the naked eye and

observation through a magnifying device like a telescope. If a telescope configurati?n

has

a

magnification

of

30x, then

an

object viewed through the telescope will appear

30

tIm~~ larger th

an

I

it

would with the naked

eye.

To

calculate the magnification

of

your telescope setup,

d1v1de

t~e

fo~a

length

of

th~ telescope tube by the focal length

of

the eyepiece. F?r ex~mple, a

20m~

eyepiece

in

telescope with a 1000mm focal length will result in

sox

power, which will make the obJect appear 5

times larger. If you change the eyepiece, the power goes

up

or

down accordingly.

Focal

ratio

Telescope

Focal

Length

Magnification=

---------

Eyepiece

Focal

Length

The

focal ratio

of

a telescope

is

determined by dividing

the

telescope's focal length by its aperture

(usually expressed in millimeters). It plays a key role in determining a telescope's field

of

view and h f

significantly impacts imaging time

in

astrophotography. For example, a telescope

with

a focal lengt 0

1000mm and a 100mm clear aperture

has

a focal ratio

of

f/10.

F l .

Telescope

Focal

Length

oca

Ratio=

________

_

Focal

length (Telescope):

Telescope

Aperture

Th~

focal

le_ngth

is

t~e

di_stance

in millimeters between the objective lens

or

primary mirror and the of

point at which entering light

ray~

converge -otherwise known

as

the

focal point.

The

focal lengths

the telescope tube and the eyepiece are

used

to

determine magnification.

Focal length (Eyepiece):

The

focal length

is

the

dis~ance

in millimeters between the center

of

the first lens element in

an

eyepiece

~nd

the f~~al

p_o1nt.

The

focal !engths

of

the telescope tube and the eyepiece are used

to determine

magnif1cat1on.

Short eyepiece focal lengths produce higher magnifications than long

eyepiece focal lengths.

Exit

Pupll

.

The

exit pupil

is

the diameter

of

the_

beam

of

light coming

out

of

the eyepiece.

To

calculate exit pupil.

divide the focal length

of

your eyepie~e by your telescope's focal ratio. For example,

if

you

use

a

2ornrn

eyepiece with

an

f/5

telescope, the exit pupil would be 4mm.

fyeplece

Lens

12

Eyepiece

Focal

Length

Exit

Pupil=

--------

Telescope

Focal

Ratio

<=>·CPL~

RE

ONE

Wh,.,

leo,nlftt

tlllleeu

rwn

Short Ey• Relief

Dls~nc•

1.on9

R,,fi.f

Dist•nce

o-~o

Ey•plec• lens Eyeplec•

l•ns

Eye Rellef . . d. t h. h

OU

Eye

relief

is all

about

a

comfortable

viewing

experience

because

,t

,s

the

,stance~

w 1

~

_Y

Th.

need

to

position

your

eye

from

the

eyepiece's

outermost

surface

to

enJoy

the

full

f1

7

1d

o _view.

1s

characteristic

is

of

special

concern

to

observers

who

wear

glasses

to

correct

an

ast1gmat1sm,

because

a

long

enough

eye

relief

is

necessary

to

allow

room

Barlow

Lens

for

glasses. 2

~ns

Elements

1

Huygenian Eyepiece Kellner Eyepiece Plossl Eyepiece

2 Lens Elements 3 Lens Elements 4 Lens Elements

1

Eye

Lens

Eye

Lens

Field

~ns

Field Lens

Light Light

Light

Field Lens

Huygenlan Eyepieces:

Light

A

Huygenian

eyepiece

uses

two

piano-convex

lenses

separated

by

an

air

gap.

They

have

a

fairly

narrow

apparent

field

of

view.

Kellner Eyepieces:

A Kellner

eyepiece

uses

three

lens

elements

-

two

of

which

are

paired

together

in

an

achromatic

doublet

design

to

minimize

chromatic

aberrations.

They

typically

produce

an

apparent

field

of

view

around

45°.

Pl611I Eyepieces:

A Ploss!

eyepiece

uses

two

doublets

(a

pairing

of

len~)

for

a

total

of

four

lens

elements.

This

eyepiece

design

delivers

sharp

views

and

an

apparent

field

of

view

of

approximately

so•.

which

works

well

for

both

planetary

and

deep

sky

viewing.

Barlow Lens:

A

Barlow

lens

effectively

increases

the

focal

length

of

a

telescope.

It

is

inserted

between

the

eyepiece

and

the

focuser/diagonal

(depending

on

the

optical

setup)

and

multiplies

the

magnification

power

of

the

eyepiece.

For

example, a

2x

Barlow

will

double

the

magnification

of

a

particular

eyepiece.

13

E)·<PL~RE

ONE

Where

learn1n1

Meetl

Fwn

Caution: The user

is

cautioned that changes

or

modifications

not

expressly approved

by

the

party

responsible

for

compliance could void the user's

authority

to

operate

the

equipment.

Note: This equipment

has

been tested and found

to

comply

with

the

limits

for

a Class B digital device,

pursuant

to

part

15

of

the

FCC

Rules.

These limits are designed

to

provide reasonable

protection

.

against harmful interference in a residential installation. This

equipment

generates uses and can radiate

radio frequency energy and,

if

not installed and used in accordance

with

the

instructions,

may

cause

harmful interference

to

radio communications. However, there

is

no

guarantee

that

interference will

not

occur in a particular installation. If this equipment does cause harmful interference

to

radio

or

television

reception, which can be determined by turning the

equipment

off

and

on,

the

user

is

encouraged

to

try

to

correct the interference

by

one

or

more

of

the following measures:

-Reorient

or

relocate the receiving antenna.

-Increase the separation between the equipment and receiver.

-Connect

the equipment

into

an outlet on a circuit different

from

that

to

which

the

receiver

is

connected.

-Consult

the dealer

or

an

experienced radio/TV technician

for

help.

FCC

RF

Radiation Exposure Statement:

This equipment complies

with

FCC

radiation exposure limits set

forth

for

an uncontrolled environment.

This equipment should be installed and operated

with

a minimum distance

of

20cm

between

the

radiator and any part

of

your body.

FCC

Supplier's Declaration

of

Conformity

Pr<:>duct

_name/

m_odel

_number:

Smartphone Mount

w/Bluetooth

/ AR5588

This

d_evice

_complies

with part

15

of

the

FCC

Rules.

Operation

is

subject

to

the

following

two

conditions:

(1)

This device may

_not

cause harmful interference, and

(2)

this device

must

accept any interference

received, including interference that may cause undesired operation.

Explore Scientific,

LLC

1010

South

48th

Street, Springdale,

AR

72762

866.252.3811

www.explorescientific.com

WIier•

L•ar"lng

"'•eU

Fun

Notes:

15

Where

Learnln9

Meets

Fun

Explore

Scientific,

LLC.

1010

S

48th

Street,

Springdale,

AR

72762

,

explorescientificusa.corn

l

866.252.3811

All

rights

reseived.

Made

in

China.

CONTENTS

AND

COLORS

MAY

VARY

CONFORMS

TO

THE

SAFETY

REQUIREMENTS

OF

ASTM

F963

16

V042020

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