・完成図

Viewﬁnder

・イラスト3-1
Body Tube
Viewﬁnder
Eyepiece
Attachment

NOTICE● Do NOT walk while using this telescope. You may trip or collide with a personⒶ or objectⒷ

NAOJ Telescope kit
・完成図

Assemble
Instructions

・完成図

Viewﬁnder

・イラスト3-1

Body Tube
ViewﬁnderⒸ

resulting in injury.
Draw Tube● Keep this telescope stable. If the telescope falls it may cause injury to people or damage toEyepiece
the telescope itself.
● Keep a close eye on children to prevent them from placing the lenses or other small parts
・イラスト3-1
into their mouthes.
●The included screwdriver has a sharp tip. Handle with care.
Viewﬁnder
Body Tube

List of Parts

Viewﬁnder
Eyepiece
Attachment

Eyepiece
AttachmentⒼDraw Tube

some assembly. Follow these
instructions to complete theⒷⓂ

Eyepiece Eyepiece

Viewﬁnder

ViewﬁnderⓃ
Eyepiece
AttachmentⓅ

kinds of celestial objects.

Ⓖ●This kit contains several very small parts. Be careful not to drop or lose any parts.

●This kit contains optical lenses. Handle the lenses with care to avoid damaging or dirtying

them. Scratches or stains on the translucent surfaces of the lenses may interfere withdetailed observations.
If the surfaces do become dirty, clean them gently with a cleaner for cameras or eyeglasses
in order to avoid scratching them.
●This kit does NOT contain a tripod for telescope observations. The telescope can be mounted
to most still/video camera tripods.
● For your own safety and the safety of the telescope, please read the Important Notes at the・イラスト4-1
end of this document before using.
● Adult supervision is strongly suggested for children when using the telescope.

ⒾⒿ Ⓚ

・イラスト4-2（2）Ⓛ・イラスト3-1ⓆⓇⒹⒺⒻⒺ

EyepieceⒷ・イラスト4-2（1）ⒻⒼ● Assembly Tools:ⓁTripod Connection NutⓂScrews (long) x4ⓃScrews (short) x4ⓅScrewdriverⓆGuide Ring for cameraⓇLuminous Sticker

ⒽⓂ

ⓁⓃ

Ⓠ

ⒾⒿ Ⓚ

Ⓡ

・イラスト4-2（1）

・イラス

Body]
Assembly Procedure 1 [Telescope・イラスト4-1

・イラスト4-1

Warning Indications about Product Liability

start a fire.

ⒽⒼⒽ ⒾⒿ ⓀⒹ● Body Tube : ・イラスト4-1ⒶHalf Tube x2ⒷLock Ring
● Draw Tube :ⒸHalfⓂTube x2 Ⓛ
● Eyepieces :Ⓜ
ⓁⒹEyepiece(large)ⓆⓇⓃⒺEyepiece (small)ⒻEye Pad x2ⒼEyepiece
AttachmentⓆⓇⓃ● Optical Parts :・イラスト4-2（1）ⒽPrimary LensⒾⒿEyepiece Lens set (large)ⓀEyepiece Lens set (small) x2●This kit includes a small screwdriver, the only tool necessary for assembly.

damage to your eyes, possibly inducing permanent blindness.

Ⓟ

Draw TubePrecautions● Do NOT put this telescope in direct sunshine. It could accidentally focus the Sun's rays andⒻⒶ

This kit does NOT containa tripod for telescopeobservations.

● NEVER observe the Sun with this telescope. Extremely strong sunlight can cause seriousⒺBody Tube

telescope and observe manyWARNINGⒹⒸ・完成図

Draw Tube

Please read this section with your parent or teacher.

ⒾⒿ ⓀFirst of all, check to see that your package contains all the necessary parts.
ⒶⒷⒸⒶ

This NAOJ Telescope kit requiresⒽ

Align the screw threads on thePreparationof Tube Parts
1 ⓂScrew(long)outside of the Draw Tube andⓂScrew (long)the insideof the Body Tube.
The body parts comepre-assembled,but you willneed to disassemble them to install components
inside.
1. Turn the screw-type Lock RingⒷ to detach.
2. The two halves of the Body TubeⒶ and the Draw
shouldseparate
easily.Connection NutⒽPrimary TubeⒸ
LensⓂScrew(long)ⓁTripodⓂScrew (long)

Combine the Draw Tube parts Ⓒ
and set them in the Body, withthe wide side inside.

Detached Lock Ring.

・イラスト5-2（1）ConvexSurface・イラスト4-2（2）89・イラスト4-2（2）ⓂScrew (long)

Align the screw threads on theoutside of the Draw Tube andthe inside of the Body Tube.

ⓂScrew (long)

Combine the Draw Tube parts Ⓒ
and set them in the Body, withthe wide side inside.

・イラスト5-2（1）Align the screw threads on theCombine the Draw Tube parts ⒸFla

Ⓝ

・イラスト4-1ⓆⓇ
ConvexSurface・イラスト4-2（2）Ⓚ・イラスト4-2（1）・イラスト4-1

2 Mounting the Primary Lens

Align the screw threads on theⓂScrew (long)outside of the Draw Tube and※Handle the lens with extra care so as not to scratch or dirty it.
the inside of the Body Tube.

Ⓘ
Combine the Draw Tube parts Ⓒ
and set them in the Body, withthe wide side inside.

2 Assembling the EyepiecesⓂScrew (long)Ⓚ Ⓝ Screw (shⓃ Screw (short)

Attach the Eye Pad in this orientation.

Attach the Eye Pa・イラスト5-2（1）※Handle the lenses with extra care so as not to scratch or dirty them.

1. First, determine the sides■ Eyepiece (large)of the lenses. Each lens(short)Ⓝ ScrewⒼEyepiece
Telescope
TubeAttachmentⒹⒿⒻ
has a flat side and a convex
ConvexFlat
Surface(bulged) side. If you place a・イラスト6-1ⓂScrew (long)lens in the wrong orientation,
Convexthe telescope will not work
Surfacecorrectly.
2. Disassemble the combined Eyepiece HousingsⒹ■ Positions of the Primary Lens, Tripod Connection Nut, and Screws (long).
and Ⓔ, and mount the two lenses for each in theⒾ Ⓝ Screw (short)
Align the screw threads on theCombine the Draw Tube parts Ⓒslots engraved inside of them. Refer to the figureⓂScrew (long)
・イラスト5-2（1）ⓂScrew (long)outside of the Draw Tube andand set them in the Body, withAttach the Eye Pad in this orientation.
the inside of the Body Tube.
the wide side inside.
carefully.
・イラスト4-2（2）■ Eyepiece (small) The larger curvature sides
grip
In EyepieceⒹ (large), the convex side of both lenses
should be facing each other.
Eyepiece
faces toward the wide opening of the Housing. InⓃ Screw (short)Ⓝ Screw (short)
Convex EyepieceⒺ
Telescope Tube(small),the twolenses'
convex sidesⒹⒿⒻ ・イラスト7-1ⒺⒻ
Flat
Surface
Combine the Draw Tube parts Ⓒ
Align the screw threads on theshouldface
insidetowardeachother.
The larger curvature sidesⓂScrew (long)
・イラスト5-2（1）ⓂScrew(long)Lens
and set them in the Body, withoutside
the Draw Tubeand ConnectionⒽPrimaryⓂScrewof(long)ⓁTripodNutⓂScrew (long)should be facing each other.
・イラスト6-1
the wide side inside.
the inside of the Body Tube.
3. Fit the two sides of the eyepiece housings together.
Screw(short)ⓃScrew (short)
TakeConvex
care not to let theⓃlenses
shift out of position.
ⒹⒿⒻⒺⒻSurface
4. Insert two screws (short)Ⓝ in the holes on each ・イラスト8-1
3 Mounting the Tripod Connection Nut
eyepiece marked in the picture and tighten to hold
ConvexⓀPlace the Tripod Connection NutⓁ into the hexagon shaped pit.
FlatSurface
the parts ofⒾConvex
the Screw
Eyepiecesfirmlytogether.
Ⓚ Ⓝ Screw (short)(short)ⓃⒽPrimary Lens
ⓂScrew (long)ⓁTripod Connection NutⓂScrew (long)
Surface
5. Attach the Eye
PadⒻ to the tip of each eyepiece.
4 Assembling the Draw Tube
1. First of all, determine the front side of the Primary LensⒽ.
This is actually a compound lens with two components. The thinner,
The thinner half ofthe doublet lensmore curved component is on the front side.
faces forward.
2. Put half of the Body TubeⒶ on the table with the inside facing up.
ⒽPrimary Lens
ⓂScrew (long)ⓁTripod Connection Nut
3. Mount the Primary LensⒽ at the slot engraved on the inside of thehood (wider part).
・イラスト4-2（2）Confirm the orientation of the lens.

1. Fit the two sides of the Draw TubeⒸ together.
2. Set the assembled Draw TubeⒸ in the Body TubeⒶ.
Let the grip of the Draw Tube stick out, and fit the screw threads on the outside of the Draw
Tube into the threads on the inside of the Body Tube.

1. Fit the left side of the Body TubeⒶ over the right half.
Take care not to let the lens or the nut shift out of position.
2. Attach the Lock RingⒷ to the bottom of the Body TubeⒶ to join the parts.
3. Insert four screws (long)Ⓜ in the holes marked in the picture and tighten to hold the parts of
the Body TubeⒶ firmly together.

Assembly Procedure 2 [Eyepieces]ⓀⒾⓀ Ⓝ Screw (short)Ⓝ Screw (short)

Assembly Procedure 3 [Attaching an Eyepiece to the Telescope Tube]
Attach the Eye Pad in this orientation.
Telescope Tube・イラスト7-1

Screw the Eyepiece AttachmentⒼ
onto the end of the Telescope Tube.
Screw in to ・イラスト6-1
place.(Do not overtighten.)

・イラスト9-1

Eye mount
Pad in this orientation.
The positionAttachof the theTripodⒼEyepiece
Eyepiece
Attachment

・イラスト10-1ⒼEyepiece
Attachment

Telescope Tube

Eyepiece・イラスト8-1
Front Sight

Rear Sight

2 Changing the Eyepiece

Push the Eyepiece into the AttachmentⒼ. To detach, just pull it out.grip
This set contains two Eyepieces with different magnifications.
● Eyepiece (large) : Magnification 16X
・イラスト7-1

Eyepiece

The position of the Tripo● Eyepiece (small) : Magnification 66X
grip

1 Combination of Lenses

EyepieceThis kit contains the parts for two eyepieces.
Please check the combination of lenses and Housing parts.
ⒹEyepiece (large)Ⓘφ20mm Flat-Convex lens +Ⓙφ10mm Flat-Convex lens
The convex surface of each lens should
face forward.
ⒻEye Pad (interchangeable)

Attach the Eye Pad in this orientation.

Eyepiece Attachment
1 ・イラスト6-1

5 Finishing the Telescope Tube

● Eyepiece (large) : Magnification 16X

Attach the Eye Pad in this orientation.

● Eyepiece (small) : Magnification 66XⒺEyepiece (small)Ⓚφ8mm Convex-Convex lens (2 pieces)
The convex sides should be facing
each other.
ⒻEye Pad (interchangeable)

・イラスト10-1

easierto use]
Assembly・イラスト8-1
Procedure 4 [Making the Viewfinder
・イラスト9-1
・イラスト̲0527追加分
・イラスト7-1

The Viewfinder of this telescope consists of a "Front Sight" and a "RearSight". Putting a luminous sticker on the Front Sight will make it more
Rear Sight
visible in dark places.
・イラスト8-1●The "Front Sight" is the protrusion on the tip of the hood. Refer tothe figure to place the reflective sticker.
●The Luminous Sticker is longer than Thetheposition
protrusion,so
let it extendof the Tripodmountout on the near side (towards the Eyepiece).
Front Sight

Front Sight

Rear Sight

・イラスト10-1

The position of the Tripod mount1011

・イラスト9-1
Front Sight
Rear Sight

・イラスト9-1

・イラスト10-1

・イラスト̲0527追Attach the Eye Pad in this orientation.

Attach the Eye Pad in this orientation.

ConvexSurfacegrip
Eyepiece・イラスト7-1ⒼEyepiece
Attachment

Telescope Tube

・イラスト6-1

EyepieceⒹⓃ Screw (short)ⒿThe larger curvature sides
should be facing each other.

The position of the Tripod mount
EyepieceⒾ※To master the use of the ViewfinderⓀpractice on obvious objects, such as distant buildings.
Ⓚ Ⓝ Screw (short)Ⓝ Screw (short)
2. Set the tripod on a level, solidfloor.
Ⓝ Screw (short)(short)Spread theⓃ Screw
Attach the Eye Pad in this orientation.
Ⓓ adjust theⒿ heightⒻⒻ
tripod legs fully apart andto a height suitable for observation. Ⓔ

・イラスト7-1

Attach the Eye Pad in this orientation.

How to use this Telescope 3 [Eyepieces]

・イラスト10-1

ConvexSurface

・イラスト9-1

How to use this Telescope 1 [Focus]
・イラスト8-1

Attach the Eye Pad in this orientation.

2. Watch the target object
through(short) the center of the Rear Sight ring, and align the Front SightⓃ ScrewⒺ the Rear SightⒻand the target. If the luminous sticker on the Front Sight
marker in-line betweenⒼEyepiece
Telescope Tube
Eyepiece
loses its glow, illuminate it with a flashlightfor a while to recharge it. Youshould try notto look
Attachment
at the flashlight because it can dazzle your eyes and interfere with the observations.
・イラスト6-1
3. After aligning the telescope properly with the Viewfinder, the target will appear in the FOV of
the telescope.

ⒻConvexSurface
gripⓃ Screw (short)

The larger curvature sides
1. Look into the Rear Sight ringfrom behind.
should be facing each other.

It is necessary to use a tripod for stable observations.

† standard 1/4" mount screw size

Ⓚ Ⓝ Screw (short)

Attach the Eye Pad in this orientation.

Assembly Procedure
5 [Tripod]
・イラスト8-1
1. Use a general-purpose tripod for a still/video
camera†. Tighten the tripod mount screw into theTripod Connection NutⓁ (Ⓑ) on the bottom ofthe telescope.

ⓀⒾThe magnification of thetelescope can beⒼEyepiece
Eyepiecechanged by exchangingAttachment
eyepieces†. The
image condition changes according to themagnification.
・イラスト7-1

Telescope Tube

Front Sight

Rear SightⓀ

・イラスト6-1

You need to focus the telescope to observe objects.
Ⓘ Ⓝ Screw (short)
Focus by adjusting the position of the Eyepiece based on the distance to the target.
Attach the Eye Pad in this orientation.

Ⓚ Ⓝ Screw (short)
Attach the Eye Pad in this orientation.

1. Attach Eyepiece (large) (lower magnification) to the Telescope and point it at a distant location.
If you use this telescope outside during the daytime, be careful NOT to point thetelescope near the Sun.
The position of the Tripod mountⓆGuide Ring

ⒼEyepiece
Tube is inverted (rotated 180
Eyepiece
An image seen correctly through an astronomicalTelescope
telescopedegrees).
Attachment
Do not worry about this.
・イラスト6-1
2. Point the telescopeat a distantobject, such
・イラスト10-1
・イラスト̲0527追加分
as a sign board or a chimney, then rotate
・イラスト9-1
the grip of the Draw Tube until you get a・イラスト7-1
sharp image. Be careful not to force themagniﬁcation ﬁeld-of-view
grip

brightness

Eyepiece (large)

16X／lower

wider

brighterEyepiece (small)

66X／higher

narrowerdimmerEyepiece† The magnification value is calculated as the primary lens focal length divided by the eyepiece focal length.

Selecting the appropriate eyepiece (magnification) is important for good observations.
● When first pointing the telescope at an object, use the Eyepiece (large) with the lower
magnification
because its wider FOV makes it easier to find the object.
・イラスト8-1●To observe bright, compact objects in detail, the Eyepiece (small) with the higher
magnification is more effective.
grip● In contrast, to observe faint, extended objects, the Eyepiece (large) is better because of its
Eyepiece
wider FOV and brighter image.
The detail specifications of the Eyepieces are written at the end of this document.

Front Sight

Rear Sight

Draw Tube.

A telescope cannot focus on nearby
objects. Please observe objects at least 5
meters or so away.
3. If you cannot get the right focus, even byadjusting theDraw Tube, please check if
・イラスト7-1
Front Sight
all the lenses are assembled in the correct
positions and orientations.

A properly focused image

The position of the Tripod mount

How to use this Telescope 4 [Shooting Photos]

An out of focus image

・イラスト8-1ⓆGuide Ring

grip

This kit includes a guide ring for a small camera
to help you shoot photos through the telescope.
・イラスト10-1
1. Attach the Guide RingⓆ to your smartphone camera or web camera with adhesive tape.
2. ・イラスト9-1
Fit the Guide RingⓆ into the depression of the Eyepiece to align them. Then shoot photos.

Eyepiece
Rear Sight※Depending on the object image conditions, you may need to adjust thecamera settings
exposure, and so on.)Front (sensitivity,Sight

The position of theTripod
RearSightmount● Whenyour hand trembles while holding the smartphone, it・イラスト̲0527追加分
・イラスト8-1

disturbs the shooting. Try to damp the trembling by resting
your elbows on a stable place or folding your arms tightly
・イラスト10-1
to your sides.
● Functions to lock the focus and/or brightness (AE/AF lock),can be useful if available on your camera.

How to use this Telescope 2 [Viewfinder]
A telescope with a high magnification has a narrow FOV so that pointing it at the target is not・イラスト9-1
easy. A Viewfinder can help you aim. The Viewfinder of thistelescope consists of a "Front Sight" (a protrusion on the tip ofFront Sight
the hood) and a "Rear Sight" (a sighting ring at the back of theRear Sight
The position of the Tripod mountbody tube).
Rear Sight

Front SightⓆ・イラスト10-1ⓆGuide Ring

・イラスト̲0527追加分

Guide Ring

・イラスト9-1
Front Sight
Rear Sight

・イラスト̲0527追加分

1213ⓆGuide Ring

Front Sight

Rear Sight

Let's Begin the Observation of Heavenly Bodies
Important Notes (For Safe Observations)

Above all things, you should pay attention to the safety of yourself and your surroundings.
● NEVER observe the Sun with this telescope. Extremely strong sunlight can cause serious
damage to your eyes, possibly inducing permanent blindness. The excessive heat fromobserving the Sun can also damage the telescope and degrade its performance.
● Choose an observation site with a level, solid floor. Mount the telescope on a stable tripod.
Pay attention to conditions that may interfere with safe observations, such as strong windsthat could knock over the telescope.
● Choose an open space and keep your surrounding clear so as not to collide with other people
or obstacles.
● During observations on dark evenings, stay aware of your own safety. Also pay attention soas not to cause any trouble for other people.

Observe the Moon!
Large and obvious, the Moon is an excellent target for beginning observers. The Moon's shapeand moonrise times change every day.
First, use the Eyepiece (large) and observe at low magnification.

1. Mount the telescope on the tripod and set it up in a location where the Moon is visible. Check
that the telescope is stable.
2. Adjust the tripod height for easy observations.
3. Turn the telescope roughly toward the Moon, then use the Viewfinder to fine tune the pointing.
4. Focus on the Moon by rotating the draw tube.
5. After you find the right focus, try observing different parts of the Moon.
The Moon, which does not shine by itself, is visible only because of the sunlight reflecting fromits surface.
You can see this clearly when you observe the terminator between the sunlit and shadowedareas. You can also see rough terrain (craters, etc.).

■More Information about this Telescope
Besides this manual, you can find more information
for setup and usage of the telescope on the internet.
This manual is also available in downloadable format.

“You are GALILEO” Project

http://kimigali.jp/index-e.html■Specifications

Primary lens : Achromatic doublet ／ Diameter 50 mm ／ Focal length 399 mm
Magnification : 16X ／ 66X (interchangeable eyepieces)
Body length : 450 mm (490 mm at maximum extension)
Body diameter : 67 mm at the widest point (excluding protrusions)
Body Weight : 265g
Eyepiece (large) : Heugens-type, 25 mm, 16X
Eyepiece (small) : Plössl-type, 6 mm, 66X■Contact

National Astronomical Observatory of Japan
2-21-1 Osawa, Mitaka, Tokyo, JAPAN +81-422-34-3929
Contact address: NAOJ-TELESCOPE@prcml.mtk.nao.ac.jp

Notes

After you master targeting and focusing, try observing other objects.

Acknowledgements
The NAOJ Telescope kit was developed by the National Astronomical Observatory of Japan (NAOJ) "OneFamily, One Telescope" project. This project aims to deliver a safe and affordable telescope for astronomy
education to classrooms in Japan and around the world. This project was realized with the generous supportof 272 crowdfunding supporters including Mr. Norio Sasanuma. We believe this project will realize ourhopes of fostering children's interest in the Universe and inspire humanity to greater achievements throughastronomy.

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