Manual Bresser NT-150S-L (page 13 of 44) (English)

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NOTE:

Two eyepiece holders are included with your EXOS2-NT-telescope - for both 1.25”

and 2” eyepieces. To change eyepiece holders, unscrew the attached holder from

the focuser and thread on the other holder.

11. Adjust the height of the tripod: Adjust the height of the tripod by

loosening the tripod lock knobs (Fig. 11). Extend the sliding inner

section of each tripod leg to the desired length; then tighten each knob.

Adjust the tripod to a height that is comfortable for viewing.

Getting Started! – First Steps

Balancing the Telescope

In order for the telescope to be stable on the tripod and also for it to move

smoothly, it must be balanced. To balance the telescope, unlock the Right

Ascension or R.A. lock (33, Fig. 1d). When this axis is unlocked, the tel-

escope pivots on the R.A. axis. Later in the procedure, you will also unlock

the Declination or Dec. lock (17, Fig. 1d). When unlocked, the telescope

pivots on the Dec. axis. Most of the motion of the telescope takes place by

moving about these two axes, separately or simultaneously. Try to become

familiar with these locks and observe how the telescope moves on each

axis. To obtain a fine balance of the telescope, follow the method below:

1. Firmly hold the optical tube secure so that it cannot accidentally

swing freely. Loosen the R.A. lock (33, Fig. 1d). The optical tube now

moves freely about the R.A. axis. Rotate the telescope so that the

counterweight shaft is parallel (horizontal) to the ground.

2. Unlock the counterweight lock knob and slide the counterweight (21,

Fig. 1d) along the counterweight shaft until the telescope remains in one

position without tending to drift down in either direction. Then re-tighten

the counterweight lock knob, locking the counterweight in position.

3. Again, hold the optical tube so that it cannot accidentally swing freely.

Lock the R.A. lock (33, Fig. 1d), and unlock the Dec. lock (17, Fig. 1d).

The telescope now is able to move freely about the Dec. axis. Loosen

the cradle ring lock knobs (13, Fig. 1a) so that the main tube slides eas-

ily back and forth in the cradle rings. Move the main tube in the cradle.

Looking at or near the Sun will cause instant and irreversible damage to your eye!

fI r s t st e p s

Fig. 10b: Insert eyepiece into

diagonal prism and tighten

thumbscrews.

Eyepiece

Holder

Thumbscrews

Diagonal

prism

Viewfinder

Fig. 10a: Insert eyepiece intor holder

and tighten thumbscrews.

Eyepiece

Holder

Thumbscrew

Viewfinder

Fig. 11: Adjust the tripod height

using the leg lock knobs.

Leg lock knob

* Optional accessory for Exos 2

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Bresser NT-150S-L Manual

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