Explore Scientific Truss Tube Dobsonian Telescopes User Manual

User Manual

Explore Scientific Truss Tube Dobsonian Telescopes

DANGER!

Never use a telescope for solar observing without a special filter! Immediate permanent damage to your eyes will occur
as soon as you are pointing the telescope at or near the sun. Since eye damage will occur faster than your eye lid
closing reflex and it is very often painless you will react too slow – and the permanent eye damage will already have
taken place. Never point your telescope or the finder scope at or near the sun. Never look though your telescope while
it is moving. Never leave your telescope alone during the daytime without covering the main mirror. Realize that even
skew sun rays can be concentrated by the mirror and cause burns in the vicinity of the telescope, eye damage and fire.
During a observation children have to be supervised at all times.

Contents

Overview Telescope Parts
Unboxing and checking for completeness
Assembly
Collimation
Adjusting the Red Dot Finder
Using a Dobsonian telescope
Calculating magnification
Observing
Hints and tricks
Maintaining the optics
Specifications
Accessory
Explore Scientific service

All Explore Scientific telescopes and telescope accessories are subject to constant technical improvement. Minor changes of
product specifications that happen during the improvement of the product are subject to change without notice.

Please keep this manual for future reference and do not throw it away.

Figure 1

Figure 1: Telescope parts overview

1. Focusser with 10:1 reduction

2. Secondary cage unit with secondary mirror

3. Collimation-tool for the main mirror

4. Trusses

5. Altitude wheels

6. Rockerbox

7. Lid mirror box

8. Mirror box

9. Red dot finder

Unboxing and checking contents

When you open the box you should see the following picture (figure 2):

Figure 2

The trusses are already assembled in four pairs. At the bottom of the picture you will notice the collimation tool that will help you
collimating the main mirror of the telescope. Carefully remove the parts from the box, unwrap them and remove the foam parts
that secure the rest.

Figure 3

Now you can see two boxes – on the left side there ist he box that contains the mirror box and there ist he box that contains the
rocker box to the right. On the outer left you can see one of the altitude wheels, the stray light cover for the secondary cage is
visible in the upper part of the box. Remove all parts from the box and unwrap everything.

When you open the lid of the mirror box you will see the following picture:

Figure 4