Bedienungsanleitung Bresser Messier Exos 1 (Seite 9 von 44) (Englisch)

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Looking at or near the Sun will cause instant and irreversible damage to your eye! 9

5. Fastening the counterweight on the counterweight rod: insert the

base of the counterweight rod (20, illustration 1d) on the threaded

end of the rod and screw it on the counterweight rod (22, illustration

1). Then screw both in the thread on the base of the declination axis

and counter screw rod to base. If you look through the large drill hole

in the counterweight you will see the bolt blocking the hole. Move the

counterweight slightly to make it disappear in its drill hole and reveal

the hole. If it doesn‘t, carefully loosen the counterweight screw until the

bolt moves. Remove the safety cover (23, illustration 1d) from the rod.

Hold the counterweight firmly whilst moving it to about the middle of

the counterweight rod (22, illustration 1d). Tighten the counterweight

fastening screw and then replace the safety cover.

NOTE:

If the counterweight ever slips, the safety cap (23, Fig. 1d) prevents the

counterweight from sliding entirely off the shaft. Always leave the safety

cap in place when the counterweight is on the shaft.

6. Set the latitude. Setting the latitude is easier if it is set before you attach

the optical tube to the assembly. Locate the latitude dial (28, Fig. 1d); note

that there is a triangular pointer above the dial located on the mount. The

pointer is not fixed; it moves as the mount moves.

Determine the latitude of your observing location. See APPENDIX B:

LATITUDE CHART, page 28-29, for a list of latitudes, or check an atlas.

Move the latitude T-handle screws in order to move the mount until the

pointer points to your latitude. The two T-handle screws (EXOS-2 only)

work in a „push - pull“ operation—as you tighten one, loosen the other.

When the pointer points at your latitude, tighten both screws until they

make contact with the mount.

At your observing site, set up the telescope assembly so that this leg

approximately faces North (or South in the Southern Hemisphere).

7. Attach the cradle assembly to the mount

–

Models R and N: Remove the

optical tube from the cradle and slide the cradle assembly (11, Fig. 1a)

onto the cradle mounting slot. See Fig. 2g. The rounded base of the cradle

assembly fits into the rounded portion of the mounting slot. Tighten both

the cradle locking knob and the secondary locking knob to a firm feel.

8. Position optical tube –

Models AR and NT:

Unscrew the cradle ring lock

knobs (13, Fig. 1a) and open the cradle rings. While firmly holding the

optical tube (10, Fig. 1a), position it onto the cradle rings (14, Fig. 1a)

with the mid-point of the optical tube’s length lying roughly in the center

of the cradle ring assembly. Point the tube so that the front end (this

end comes shipped with the dust cover (9, Fig. 1a) over it) is oriented

as depicted in Fig. 1a. Then close the cradle rings (14, Fig. 1a) over the

optical tube. Loosely tighten the cradle ring lock knobs just to hold the

tube securely in place until you balance it. See Balancing the telescope,

page 13.

Fig. 2h: Place the optical tube

in rings and loosely tighten the

cradle ring lock knobs.

Fig. 2g: Attach cradle to base mounting

and tighten locking (EXOS-1)

Fig. 2f: Mounting the cradle (dovetail)

plate to the mount shaft (EXOS-1)

assemblInG exos-1

Cradle

mounting

slot

Fig. 2e: central mount locking

screw

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