Celestron C11, Quick Start Manual

2021/08/26 08:47

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C11 & CGE PRO

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C11 & CGE PRO

The C11 is our second largest Schmidt Cassegrain telescope and suitable for mobile use. Every time
one likes to use it, one has to put it up again from scratch. The purpose of this article is to describe
the details of this process.

Scattered pieces

To protect the sensitive electronics from humidity and other harsh weather conditions they are stored
in the lab course room. The remaining mechanical parts stay in the dome, so that one does not need
to carry them around.

Stored in the dome:

the tripod

1.

the tube (C11)

2.

counterw bar

3.

Stored in lab course room:

the CGE PROs electronic box

1.

the CGE PRO mount

2.

a box containing all 1.4″ eyepieces and the corresponding filters

3.

sun filters

4.

Setup

The CGE PRO is a parallactic mount, which has to be adjusted to point to the northern celestial

1.

pole. Therefore, the tripod (see 

figure 1

) should be positioned accordingly. To do so, it is usually

sufficient to point the tripod leg with the carrier for the hand terminal to the south.
Now put the electronic box on the tripod (see 

figure 2

) and fix it with three bolts (see 

figure 3

).

2.

Place the mechanics of the CGE PRO (see 

figure 4

) on the electronic box and fix it again with

3.

three bolts (see 

figure 5

). Due to the heavy weight of the mechanics, this step should be

performed by two people.
Screw the counterweight bar into the mechanics and place the counterweights on it (see

4.

figure 6

). When you fasten the screws on them, they are hold in place.

Connect the electronic box to the engines of the mount. The cables (see 

figure 7

) go in the

5.

ports on the side of the electronic box (

figure 8

). The cables have different lengths. The short

one connects electronic box with the right-ascension axis, while the longer one is for the
declination axis (see 

figure 9

). The cables only fit in one position.

Now plug the energy supply (see 

figure 10

) and the hand terminal (see 

figure 11

) into the

6.

corresponding ports (see 

figure 12

).

The attachment of the tube should also be performed by two people. One inserts the dovetail

7.

into the clamp of the mount (see 

figure 13

 and 

figure 14

) and holds it in place. The other one