Levenhuk Skyline PLUS Serie Guia Del Usuario página 13

Telescope tube without ring clamps
• Place the telescope tube at the saddle and balance it. Fix the telescope tube with the lock knobs
provided (fig. 4a).
Optical accessories assembly
Your telescope can be equipped with additional accessories, such as eyepieces, diagonal mirror or
prism, or a Barlow lens. The accessories should be installed in well-defined ordering.
Maksutov-Cassegrain (fig. 5a) and refractor (fig. 5c) telescopes: Loosen the focuser thumbscrew. Insert
the diagonal mirror into the focuser tube and retighten the thumbscrew to hold the diagonal mirror
in place. Then, insert the desired eyepiece into the diagonal mirror and secure it by retightening the
thumbscrew. If a Barlow lens is needed, install it between the focuser and the eyepiece.
Reflectors (fig. 5b): Loosen the focuser thumbscrew and take off the plastic cap from the focuser tube.
Insert the selected eyepiece and secure it by retightening the thumbscrew. If a Barlow lens is needed,
install it between the focuser and the eyepiece.
Red dot finderscope assembly and alignment
Insert the finderscope bracket into a holder on the telescope tube and lock it in place with a
thumbscrew (fig. 5a, 5b).
The red dot finder is a zero magnification pointing tool that uses a coated glass window to superimpose
the image of a small red dot onto the night sky. The red dot finder is equipped with a variable
brightness control, azimuth adjustment knob, and altitude adjustment knob. The finder is powered by
a 3-volt lithium battery located underneath at the front. To use the red dot finder, simply look through
the sight tube and move your telescope until the red dot overlaps the object. Make sure to keep both
eyes open when sighting.
Like all finderscopes, the red dot finder must be properly aligned with the telescope before use. This is
a simple process using the azimuth and altitude adjustment knobs (fig. 6).
• Open the battery compartment by pulling down the cover and remove the plastic shipping cover
over the battery.
• Turn on the red dot finder by rotating the variable brightness control clockwise until you hear a
click. Continue rotating the control knob to increase the brightness level.
• Insert a low power eyepiece into the focuser. Locate a bright object and aim the telescope so that
the object is in the center of the field of view.
• With both eyes open, look through the sight tube at the object. If the red dot overlaps the object,
your red dot finder is perfectly aligned. If not, turn its azimuth and altitude adjustment knob until
the red dot overlaps the object.
Optical finderscope assembly and alignment
Unthread two screws in the back of the telescope tube. Place the finderscope base above the holes on
the tube. Lock the finderscope base into position by tightening the screws (refractor 7a, reflector 7b).
Optical finderscopes are very useful accessories. When they are correctly aligned with the telescope,
objects can be quickly located and brought to the center of the view. Turn the scope end in and out to
adjust focus (fig. 8).
To align the finderscope, choose a distant object that is at least 550 yards (500 meters) away and point
the telescope at the object. Adjust the telescope so that the object is in the center of the view in
your eyepiece. Check the finderscope to see if the object is also centered on the crosshairs. Use three
adjustment screws to center the finderscope crosshairs on the object (fig. 9).
Focusing
Slowly rotate the focus knobs (Maksutov-Cassegrain 1a, reflector 1b, 1d, refractor 1c) one way or the
other until the image in the eyepiece is sharp. The image usually has to be finely refocused over time
due to small variations caused by temperature changes, flexures, etc. Refocusing is almost always
necessary when you change an eyepiece, add or remove a Barlow lens.
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