Bresser Refractor 90 900 NG - Инструкция по эксплуатации - Страница 13

EN

13

IMPORTANT
Only secure screws finger tight. 
Do not overtighten screws.

2. Tripod

The tripod legs are preinstalled and connected to the tripod head 
(No. 5, X) and tripod spider (No. 1, 16).
Remove the tripod from its packaging and place it upright, with the 
feet at the base. Take two of the legs and carefully pull them apart 
until they are in the fully open position. The entire weight of the 
tripod rests on one leg during this procedure. Then set the tripod 
upright again. 

Now extend each individual tripod leg to the desired length (No. 4), 
and then tighten the clamping screw on each leg (No. 4, 11), until 
they are all hand tight.  Do not overtighten the screws. The clamping 
screws serve to set the 
tripod leg interior segments to the desired height.

NOTE
The right ascension axis (green line, No. 16) 
is also called the axis of sidereal time on the 
meridian. The declination axis (blue line, No. 16) 
is also called the elevation axis. 

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3. Mounting

Fasten the mount (No. 1, 9) to the tripod head (No. 5, X) by inserting 
the mount into the tripod head from above and hand tightening the 
knurled screw from below.

Prepare the mount (No. 1, 9) by putting the weight on the weight 
shaft pole (No. 7, X) and securely screwing it into the mount from 
below.

Then, place the tube ring (No. 1 and 3, 8) on the mount and affix it 
with the screw (No. 8, X).

4. Accessories tray:

Insert the accessories tray (No. 1, 3 and 10) flat side down onto the 
center of the tripod spider (No. 1, 16) and mount in place by turning 
it clockwise 60° (No. 6). Align the three fittings of the accessories 
tray with the tripod spider retaining fittings to fix the tray in place.

5. Tube:

To mount the telescope tube (No. 1, 1) onto the tripod, undo the 
screw on the tube ring (No. 9, X) and open up the ring.

Then place the tube in the centre of the ring and close the ring up. 
Finally, secure the mounting by tightening the screw.

Note:  The main tube clamp may have two screws depending 

on model (No. 9b). If so, the main tube mounting process 
remains the same as described above.

6. Inserting the eyepiece

6.1. On refracting telescopes
The eyepieces allow you to decide which magnification you want 
your telescope to have.
Before you insert the eyepiece and the star diagonal prism, you must 
remove the dust-protection cap from the eyepiece  connection tube 
(No. 1, 6).
Loosen the screw (No. 12, X) on the eyepiece connection tube and 
insert the star diagonal prism. Retighten the screw (No. 12, X) on the 
eyepiece connection tube.

Loosen the clamping screw (No. 13a, X) to fasten the 20 mm eye-
piece into the zenith mirror in the same way, and then retighten the 
clamping screw to secure the eyepiece in place.
  

Make sure that the eyepiece is pointing vertically upward. 
If it is not, loosen the screw (No. 12, X) on the eyepiece  connection 
tube and rotate the star diagonal prism into the  vertical position.

6.2. On reflecting telescopes
Loosen the clamping screws on the eyepiece supports (No. 1, 6). 
Insert the 20 mm eyepiece (No. 2, 18) directly into the eyepiece 
supports. Hand tighten the clamping screws (No. 3b, X). 
Remove the dust cap from the main tube end.

RISK OF BLINDNESS
Never use this device to look directly at the sun 
or in the direct proximity of the sun. Doing so may 
result in a risk of blindness.

7. Assembling the finder scope/LED finder scope

Note:  The LED finder scope's battery is safeguarded against 

discharge with plastic foil when shipped. The foil must be 
removed before first use (No. 1d).

7.1. Finder scope installation (type I) 
Finder scope with threaded mounting 
The finder scope and finder scope mount (No. 1a, 2) are included in 
the packaging. 
Remove the finder scope mount fastening screws on the main tube 
(No. 1a, X), and set the mount onto the projecting screws on the tel-
escope's main tube. Carefully reinsert and tighten the screws previ-
ously removed to securely fasten the finder scope mount in place.
Now, undo the finder scope adjusting screws (No. 1a, 3) — three or 
six depending on finder scope model — until the finder scope can 
easily be slid into its mounting.  
Important: Make sure the finder scope lens points toward the main 
tube end (No. 1, 4).
Retighten the screws equally to securely fasten the finder scope in 
place.

7.2. Finder scope assembly (type II) 
LED finder scope with screw threading
To assemble the LED finder scope (No. 1b, 2), remove the LED 
finder scope on the telescope's main tube (No. 1c, X). Set the LED 
finder scope onto the projecting screws fastening screws on the 
telescope's main tube. Then carefully reinsert and tighten the screws 
previously removed to securely fasten the LED finder scope in place.
Important: Make sure the LED finder scope lens points towards the 
main tube end (No. 1, 4).

7.3. Finder scope assembly (type III) 
LED finder scope with Quick Insert
The LED finder scope (No. 1b, 2) and mount constitute a single unit. 
Slide the foot of the LED finder scope completely into the appropri-
ate base on the telescope's main tube (No. 10, X). The finder scope 
mount will snap in place. 
Important: Make sure the LED finder scope lens points towards the 
main tube end (No. 1, 4). 

7.4. Finder scope assembly (type IV) 
Finder scope with Quick Insert 
The finder scope and its mount are preassembled and included in 
the packaging.
Slide the finder scope mount foot entirely into the appropriate base 
on the telescope's main tube (No. 10, X). The finder scope mount will 
snap in place. 
Important: Make sure the LED finder scope lens points towards the 
main tube end (No. 1, 4). 
There are two clamping screws (No. 1c, 3) and a spring-loaded 
counter screw on the finder scope mount. Evenly tighten the clamp-
ing screws until resistance is felt to securely fasten the finder scope 
in place.

8. Aligning the finder scope 

8.1 Aligning types I and IV (finder scopes) 
The finder scope must be adjusted before use; the finder scope and 
the telescope's main tube must be aligned parallel to one another. 

Insert the eyepiece with the greatest focal length into the zenith mir-
ror ( No. 13a, refracting telescopes only) or directly into the eyepiece 
supports (No. 13b, reflecting telescopes only). Point the telescope 
at a significant object approximately 300 metres away (e.g. a house