SVBONY SV25 User manual

SV25 Telescope
Instructions

SV25 Refractor Telescope
Specifications and configuration
Schematic
Main Accessories
Operating Sequence
Precautions
What to Look For in the Sky
Package Includes
Care and Cleaning of Optics
Contents

SV25 Refractor Telescope
Open up the wonders of the Universe to aspiring astronomers of all ages with the
SV25 refractor telescope. The refractor telescope is designed to give the first-time
telescope user the perfect combination of quality, value, features and power.
SV25 refractor telescope perfects for kids;teens or beginners;entry level amateur
astronomers as a great way to open up the wonders of the universe to the aspiring
astronomer; perfect for observation of celestial bodies; moon; planets; stars in the
night sky.

Specifications and Configuration
Aperture:60mm Focal Length:420mm
Optical Type:Achromatic Refractor
Viewfinder:5x20
90 Degrees mirror-Adapter
Magnification 1(9mm Eyepiece)=420/9=47x
Magnification 2(20mm Eyepiece)=420/20=21x

Schematic

Main Accessories
Two correct eyepieces:
9mm;20mm viewing a wide range of objects;moon;planets;or land
1.25" 90 degree zenith mirror:
Looking with comfortable angle;diagonal correct upside down and left right reversed
image
5x20 finder scope:
Locate objects in the main telescope;it provide 5x20 magnification helps find the
objects soon
Silver aluminum tripod:
Preassembled aluminum full size photographic tripod ensures a stable platform quick
to release dovetail attachment for clear view of moon;planet

Operating Sequence
Viewfinder mounted on the telescope,the installation of the telescope to the tripod,
the installation of the Enhanced Diagonal to the telescope.
Place the 20 mm eyepiece to the Enhance Diagonal, to distant objects on the ground
as the target,adjust the 3 screws of the viewfinder, so that the viewfinder and
telescope eyepiece observed the same goal
Remove the eyepiece from the zenithoscope and attach it to the eyepiece interface
of the photo holder
The eyepiece attached to the photo frame holder,the installation of the eyepiece to
the Enhanced Diagonal,rotating the focus knob, in the eyepiece to see distant objects
clearly.
In the photo frame bracket sucker set up mobile phones,mobile phone screen through
the observation,so that the lens at the middle of the eyepiece.
Adjust the tripod,aiming at the sky target(For example:the moon, the plant), mobile
phone camera in the app to enlarge the target shooting.
Replace the 9 mm eyepiece and Barlow lens(optional), to achieve different
magnification

Precautions
Blindness Danger!
Don't use the product to watch the sun or the sun directly around the place.This will
have the risk of blindness.
Choking hazard!
The child must use the product under the care of an agult.So that the packaging
materialss, such as plastic bags and rubber lines away from children.This will have
the risk of suffocation.
Fire hazard!
Don't place the product ,especially the lens directly in the sun.This will present a fire
hazard.
Note!
Don't disassemble the product.If a defect,please contact the dealer.The dealer will
contactthe service center and repair it if necessary.
Privacy protection!
This product is for personal use only.Please take care to protect the privacy of othere.
For exemple:don't use the product to observe the apartment

What to Look For in the Sky
There is a whole universe of objects to be seen in the night sky so where does one
start? Well lets examine the most visible objects first
The Moon
The moon is the easiest target to find in the night. When it is in the full position, when
the entire face is lit, then it bathes the night with a silvery light washing out the rest of
the sky from all but the brightest objects. The best time to view the moon is actually
not when it is full but rather anytime up to the first quarter, this is when the face
appears to be half lit up. The terminator on the moon, the dividing line between dark
and light, shows the best features such as craters and mountains

What to Look For in the Sky
The Planets
The planets are our solar system companions. These range in size from moon size
rocky bodies to giant gas balls which could hold 1000 Earths. To find the planets
requires some information as to when they are visible. An astronomy magazine such
as SkyNews or Sky and Telescope, will give you the locations of the planets from
month to month. Most people who have looked up at night have probably seen some
planets but did not realize it. A planet, when it is well clear of the horizon will not
twinkle as do the stars. They are resolved by the eye as tiny balls as opposed to the
stars which are infinitely small points of light. The easiest planets to view, when they
are visible, are Venus, Mars, Jupiter and Saturn, Uranus and Neptune. Mercury is
an object to look for but it is usually below the horizon and often is a challenge to find.
Pluto is too small for most telescopes below 10" so do not worry about finding it at this
time.

What to Look For in the Sky
Each of the planets has its own interesting views. Venus is covered with clouds so
all we see is an extremely bright light, the brightest next to the moon, however it like
our moon goes through phases. In other words the planet surface will, as it travels
around the sun, appear to have different amounts of it lit up. This gives the planet
varying crescent shapes, as if a bite were taken out of it. Mars is the red planet. It is
verynoticeably red when rising above the horizon and stands out like a beacon in the
night sky. The apparent brightness of Mars varies as the planet orbits around the sun
so throughout its time being visible to us it will brighten and dim depending on how
our two planets are aligned relative to each other.
Jupiter is the largest planet in our solar system. It is the second brightest planet next
to Venus. Jupiter also has moons of which 4 are easily visible through a telescope.
In fact as you watch them throughout the evening you will see that they change their
positions relative to each other and to Jupiter. It is possible with careful planning to
actually see one of the moons disappear either in front of, or behind Jupiter as they
travel around their planet. Another great feature of Jupiter is the cloud belt pattern.
Jupiter is alive with weather activity and the planet’s clouds have formed in time into
belts which are visible to telescopes, when our skies allow it.

What to Look For in the Sky
Saturn, the second largest planet, is not as bright as Jupiter and its moons are not
as visible through small telescopes. However it has very large rings that encircle the
planet which are spectacular. The planet appears as a pale yellow, as do the rings
but one can spend hours looking at these. The major division in the rings, the
Cassini division, is possible to see in a small telescope if the viewing is steady.
Uranus and Neptune are the last of the solar system gas giants. They do not yield
up spectacular sights like Jupiter or Saturn, however they are part of our family and
are rewarding to see as they can be a challenge to find.
Beyond our solar system there lies a multitude of objects to be found. Galaxies,
nebulae and star clusters abound.

Package Includes

Care and Cleaning of Optics
Warning:Improper cleaning of optical components may void the warranty
Optical components of a telescope will over time get dirty. The amount of dirt and or
dust collected onto a lens or mirror should only be removed with the utmost care and
this is at times best left to people with experience in this procedure. A considerable
amount of dirt or dust must be present on the optical surface before one will notice
the effect visually
1.Keeping the dust caps on during storage of the telescope will reduce the amount of
dust collected
2.After using the telescope there might be dew condensation, on the optical surfaces.
When the telescope is brought inside remove the dust caps and allow the moisture
to evaporate naturally. Point the telescope downwards so as to minimize the
collection of airborne dust
3.Once the moisture is gone then replace the dust caps

Care and Cleaning of Optics
4.If you wish to remove dust from the lenses or mirrors you first should try using a
can of filtered compressed air. Remove the dust cap and the dew shield in the
case of the refractor style of telescope, or take the mirror cell out of the reflecting
type. Once you are able to freely blow across the surface of the optics then begin
by first pointing the can away from the piece and gently expel some air. This will
remove any condensate in the air can lines and clear off dust that may have
accumulated on the discharge tube. Next using short quick bursts of air carefully
remove the dust particles. Don't hold the trigger of the compressed air for too long
as condensate might be belown out across the optical surface. If particles still
remain after several attempts at removal than the telescope should probably be
taken back to the dealer for cleaning.
The optics of your telescope should last a long time before they generally require
major cleaning. By keeping the dust caps on and avoiding the temptation to handle
the lenses or mirrors you will find that very little is needed in the way of optical
maintenance

このたびは、SVBONY望遠鏡をお買い上げいただきありがとうございます。こ
の望遠鏡は倍率調整が可能で、地上観測用とともに天体観測用として開発した
屈折式望遠鏡です。目的に応じ、旅行・スポーツ･ホビー等の楽しみを倍増いた
しますが、月のクレーターや土星の環、木星などの惑星の観測にも役立ちます。
本説明書をご精読の上、組み立て方、操作、取り扱いの注意点を正しく理解し
て、地上/天体観測をお楽しみください。

各部の名称

安全上のご注意
望遠鏡を太陽の方向に向けないようにご注意ください。レンズを通った太陽の光
はとても強力で、目の被害となり、失明してしまう危険があります。
お子様が使用する場合は、観測中の安全を保護者の方が確認してください。

鏡筒を三脚の架台に取付けます。
アルミ三脚のステイが地面と平行になるまで三つの脚を外側に開いて立てます。
鏡筒方向調節ハンドルを引き出して架台を地面と水平するようにします。
架台の筒受けネジを鏡筒の下側にあるネジ穴に位置を合わせて差し込みます。
三脚から鏡筒が浮き上がっていないよう注意してください。
確認後、鏡筒取付ネジを架台の下側にあるハンドルで回して、ゆっくりとまたし
っかりと締め付けてください。
三脚の長さは、観測場所の条件や観測する人の背の高さなどに合わせて使いやす
い高さに調節してください。
鏡筒と三脚の組み立て方

ファインダーの取付と使い方