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50MM Refractor

STEM Telescope Kit

Instruction Manual

SUN HAZARD

 — Never look directly at the sun 

with this device.

WARNING:

The lens contains lead that may be harmful.

Wash hands after touching.

WARNING:

CHOKING HAZARD

 — Small parts. 

Not for children under 3 years.

WARNING:

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Assembly Steps

1. Find all parts and accessories. (16 parts) 

 

2. Eyepiece assembly (2 set of 3 eyepiece lens set, 

reticle adjusting ring, eyepiece assembly locking 

cap)
3. OTA assembly (2 sets of 2 objective lens set,

lens separation ring, assemble to OTA slot.)
4. Finishing. (1/4 nut (screw), assemble eyepiece 

set on to the back of the OTA, close the two piece 

of the OTA, assemble dew shield, assemble barrel 

locking cap, bottom locking cap)

© 2018 EXPLORE ONE

1010 S 48th Street, Springdale, AR 72762

exploreone.com | 866.252.3811 

All rights reserved. Made in China. 

CONFORMS TO THE SAFETY 

REQUIREMENTS OF ASTM F963

Troubleshooting Guide:

Problem

Solution

No picture

Remove dust protection cap and sun-

shield from the objective opening.

Blurred picture

Adjust focus using focus barrel.

No focus possible

Wait for temperature to balance out.

Bad quality

Never observe through a glass 

 surface such as a window.

Objects to view

Moon

Pleiades 

Star Cluster

Milky Way 

Star Clouds

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