7
11) Insert the 25-mm eyepiece into the eyepiece holder. (See Fig. 17) Tighten the
small set screw to hold the eyepiece securely in place.
(Fig.17)
12) A 2X Barlow lens is supplied to double the basic magnifying power provided by
an eyepiece. In viewing situations where very high magnifying powers are desired,
insert the 2X Barlow lens between the eyepiece and the focusing tube. (See Fig. 18)
(Fig. 18)
13) The equatorial motor supplied with the OR7500 is designed to provide accurate
tracking of celestial objects along the RA (Right Ascension) axis, thereby reducing
the need for making constant manual readjustments in order to follow and keep a
subject in view. Attach the motor to the mount assembly by first attaching one end of
the spring to the screw on the mount (the other end should already be attached to the
motor). (See Fig. 19 and 20).
(Fig. 19)
(Fig. 20)
