Assembling The Refracting Telescope P28; Aligning The Finderscope P28 - NATURE & DECOUVERTES LUNETTE MIZAR 70/900 Mode D'emploi

ASSEMBLING THE REFRACTING TELESCOPE
• Fully open the tripod (1) then set up the tray (2). Set the tripod to the desired height by lengthening
the sliding section of each leg.
• Insert the counterweight (3) into the shaft (4). Use the locking screw to lock the counterweight in
place (5).
Screw the counterweight shaft into the base of the declination axis of the equatorial mount. (See FIG
2)
• Fix the base of the equatorial mount (6) onto the head of the tripod (7) using the nut (8).
• Fix the base of the cradle (9) onto the head of the equatorial mount (10) and screw it in place (11).
• Use adjustment knobs (12) and (13) to set the controls. Tighten the knurled screws on the ends of
the adjustment knobs to hold them in place.
• Insert the star diagonal (FIG 3) into the focussing tube, then insert eyepiece K 25mm (14) into the
star diagonal. Moderately tighten the knurled screw (15) to lock the eyepiece in place.
• Attach the mount for the finderscope (16) to the optics tube using the locking nuts (17). Then, centre
the finderscope (18) on its mount using the three adjustment screws (19).
The refracting telescope is now set up. Before you can use it effectively, you will now need to align the
finderscope.
ALIGNING THE FINDERSCOPE
The wide optical field of the 6 x 30mm finderscope will allow you to easily locate a celestial object,
before observing it with the high magnification refracting telescope. The 6 x 30 (18) finderscope and
the mount for the finderscope (16) attach to the tube of the refracting telescope as explained above.
However, for the finderscope to function, it must be aligned with the refracting telescope, so that the
refracting telescope and the finderscope are directed at the same point in the sky. Once this simple
alignment is complete, it makes it much easier to find objects, because first you will locate an object
in the wide angle finderscope, then you will be able to observe it in the eyepiece of the refracting te-
lescope.
To align the finderscope:
• Place the eyepiece (14) with the least magnification (K 25mm) into the star diagonal of the refracting
telescope.
• Unscrew the right ascension brake (RA) and the declination brake (Dec) so that the refracting te-
lescope can turn freely on its two axes. Then point the telescope towards an object on the land (for
example, the chimney on a house) at least 200 metres away. Look at the object through the eyepiece to
centre it in the field of the refracting telescope (14). Use the adjustment knob to set the focus (20), to
achieve a clear picture. Once the object has been centred, re-tighten the brakes.
• Now look in the finderscope and tighten or loosen one or more of the knurled screws (19), as re-
quired, until the reticle on the finderscope is centred on the object the telescope is aimed at.
Once the adjustment has been made, the objects the finderscope is aimed at will be centred in the field
of the telescope.
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