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5

A

ligning

the Finderscope

1) Focus the telescope eyepiece on a distant object.

2) Once the object has been centered in the telescope 

    view, ensure the locking screws are tightened.

3) Use the three alignment screws to center the 

    finderscope crosshairs on the object seen in the

    telescope view (Fig.a). 

    

    

Depending on telescope design, the object may appear 

    inverted in the telescope view. 

    Do not over-tighten the three alignment screws 

    on the finderscope mount.

OPERATING YOUR TELESCOPE

Fig.a

Telescope should be balanced before each observing session. Balancing reduces stress on telescope mount 

and allows precise control of micro-adjustement. A balanced telescope is specially critical when using the 

optional clock drive for astrophotography.  
The telescope should be balanced after all accessories (eyepiece, camera, etc.) have been attached. Before 

balancing your telescope, make sure that your tripod is balanced and on a stable surface. For photography, 

point the telescope in the direction you will be taking photos before preforming the balancing steps.

R.A. Balancing

 

1) Adjust altitude of the mount to between 15º and 30º by 

    using the altitude adjustment T-bolt. 

2) Slowly unlock the R.A. and Dec. lock knobs. 

    Rotate the telescope unitl both the optical tube 

    and counterweight rod is horizontal to the ground, 

    and the telescope tube is to the side of the mount. (Fig. b)

3) Tighten the Dec. lock knob.

4) Move counterweight along counterweight rod until 

    telescope is balanced and remains stationary when released 

5) Tighten counterweight thumb screws to hold the counterweight 

     in its new position. 

Dec. Balancing

All accessories should be attached to the telescope before 

commencing with balancing the declination axis. The R.A. 

axis should be balanced before proceeding with Dec. balancing.

1) Adjust altitude of the mount to between 60º and 75º. 

2) Release the R.A. lock knob and rotate R.A. axis so that the 

    counterweight rod is in horizontal position. Tighten the R.A. thumbscrew. 

3) Unlock the Dec. thumbscrew and rotate telescope tube until it is paralled to the ground.

4) Slowly release telescope and determine which direction the telescope rotates. Loosen 

    telescope tube rings and slide telescope tube forward or backward in the clamps 

    to balance Dec. axis.

5) Once telescope no longer rotates from its parallel starting position, re-tighten tube rings 

    and the Dec. lock knob. Reset altitude axis to your local latitude.

B

alancing

telescope

Fig.b

Содержание 709EQ

Страница 1: ...t shown Sun Shade Telescope Main Body Finderscope Finderscope Bracket Alignment Screws Eyepiece Diagonal Focus Tube Focus Knob 1 2 3 4 5 6 7 8 9 10 11 Dec Flexible Control Cable Altitude Adjustable T...

Страница 2: ...ons carefully before beginning Your telesope should be assembled during daylight hours Choose a large open area to work to allow room for all parts to be unpackaged Before you begin Never use your tel...

Страница 3: ...of equatorial mount and rotate top half of mount into an upright position The large scale setting circle should be vertical and the mounting bracket for the telescope tube should be at the top 2 Slide...

Страница 4: ...s around the telescope and fasten securely by tightening the thumb nuts 6 5 9 INSERTING EYEPIECE 9 1 Loosen the thumbscrew on the end of the focus tube 2 Insert diagonal into focus tube and re tighten...

Страница 5: ...nd 30 by using the altitude adjustment T bolt 2 Slowly unlock the R A and Dec lock knobs Rotate the telescope unitl both the optical tube and counterweight rod is horizontal to the ground and the tele...

Страница 6: ...per only Cleaning and aligning of optical elements should be preformed by an experienced technician every two years Eyepieces should be handled with care avoid touching optical surfaces Telescopes req...

Страница 7: ...3rd edition 2000 A Manual Of Advanced Celestial Photography by Brad D Wallis and Robert W Provin Cambridge University Press New York 1984 Astrophotography An Introduction by H J P Arnold Sky Publishi...

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