Bedienungsanleitung Bresser AR-152S-L (Seite 6 von 44) (Englisch)

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te l e s c o p e fe at u r e s

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

the focuser assembly. For normal observing with an eyepiece and diago-

nal prism, it is not necessary to use the lock knob.

17 Dec. Lock: Controls the manual movement of the telescope. Turning the

Dec. lock counterclockwise unlocks the telescope enabling it to be freely

rotated by hand about the Dec. axis. Turning the Dec. lock clockwise (to

a firm feel only) tightens the lock and prevents the telescope from being

moved free, but engages the manual Dec. drive shaft.

18 Polar Viewfinder Cap (for EXOS2 models only): Remove this cap when

using the polar viewfinder (see 29).

19 Declination (Dec.) Setting Circle: See APPENDIX A, page 25, for more

information.

20 Counterweight Shaft Base: Thread, along with the shaft, to the mount.

See page 9 (Exos1) or 12 (Exos2) for more information.

21 Counterweight and Counterweight Lock Knob: Counterbalances the

weight of the optical tube, and adds stability to the mount. Tighten the

lock knob on the side of the counterweight to a firm feel to prevent the

weight from sliding on the shaft.

22 Counterweight Shaft: Slide the counterweight onto this shaft (see 21).

23 Counterweight Safety Cap: Prevents the counterweight from

accidentally slipping off the end of the counterweight shaft.

24 R.A. manual Drive Assembly:

26 Latitude Adjustment: Sets the latitude of your observing location. The

two T-handle screws work in a “push-pull” operation - as you tighten

one, loosen the other. The T-handle above the azimuthal control knobs

(see 27) is the north T-handle screw (south in the southern hemi-

sphere). This side of the mount must be pointed north (south in the

southern hemisphere) during the polar alignment procedure.

With EXOS 1 Mounts, there’s only one latitute screw but the adjustment

is similar to the EXOS 2 models.

27 Fine Azimuth Control Knobs: Fine tune the side-to-side movement of

the telescope when centering Polaris in the telescope eyepiece or when

using the polar alignment viewfinder.

28 Latitude Dial: Set the latitude of the observing site on this dial using the

latitude T-handle screws. For more information see Step 6, page 9.

29 Polar Alignment Viewfinder (EXOS 2 only): Allows you to precisely polar

align the telescope.

30 Polar Alignment Viewfinder Reticle and LED Knob (EXOS 2 only):

Rotate the knob to switch on or off the LED that illuminates the reticle

within the polar alignment finder. Be sure to turn off the LED when

finished with the polar viewfinder. Powered by (factory-supplied)

batteries contained within. Polar viewfinder LED illumination is available

seperately.

31 Right Ascension (R.A.) Setting Circle: See APPENDIX A, page 25.

32 R.A. Setting Circle Lock Knob: Rotate the knob to lock the R.A. Setting

Circle in place.

33 R.A. Lock: Controls the manual movement of the telescope. Turning the

R.A. lock counterclockwise unlocks the telescope enabling it to be freely

rotated by hand about the R.A. axis. Turning the R.A. lock clockwise (to

a firm feel only) tightens the lock and prevents the telescope from being

moved free, but engages the R.A. manual shaft.

34 DEC - manual drive assembly

35 Tripod Leg Adjustment Knobs: Tighten to a firm feel to secure tripod

legs.

36 Variable Height Tripod Legs: Supports the telescope mount. The mount

attaches to the top of the tripod.

37 Accessory tray: Set extra eyepieces and other accessory on this

convenient tray.

Tripod Leg Braces: Make the tripod more secure and stable. See Fig. 3.

Important:

Before loosening the DEC lock,

hold the optical tube in place;

otherwise it might swing through

and cause damage to the mount

or even hurt the operator.

Want to learn more about

adjusting the latitude scale?

See p. 15, step 6.

DEFINITION:

In this manual, you will find the

terms “right aszension (RA),

Declination (DEC), Elevation

and Azimut”. These terms are

explained on p. 25

Want to learn more about the

polar finder? See p. 30.

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