Telescope Assembly P28; Aligning The Finderscope P28 - NATURE & DECOUVERTES mizar LUNETTE 114/900 Mode D'emploi

TELESCOPE ASSEMBLY
• 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).
• Insert the base of the cradle (9) into the groove (10) of the mount 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 eyepiece K 25mm (14) into the eyepiece holder and partially tighten the knurled screw (15)
so as to tighten the eyepiece.
• 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 telescope is now set up. Before you can use it effectively, you will now need to align the finder-
scope.
ALIGNING THE FINDERSCOPE
The wide optical field of the 6 x 30mm finderscope allows us to easily locate a celestial object, before
observing it with the high magnification telescope. The 6 x 30 (18) finderscope and the mount for the
finderscope (16) attach to the tube of the telescope as explained above. However, for the finderscope to
function, it must be aligned with the telescope, so that the telescope and the finderscope point towar-
ds 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 telescope.
To align the finderscope:
• Place the eyepiece (14) with the least magnification (K 25mm) into the eyepiece holder of the teles-
cope.
• Unscrew the Ascension Brake on the right side (RA) and the Declination Brake (Dec) so that the
telescope 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
(14), to centre it in the field of the telescope. 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.
• 28 •