Levenhuk Ra 200N F5 OTA Manual De Instrucciones página 3

Levenhuk Ra Reflectors OTA
Congratulations on your purchase of a high-quality Levenhuk telescope! These instructions will help you set up, properly use,
and care for your telescope. Please read them thoroughly before getting started.
CAUTION! Never look directly at the Sun — even for an instant — through your telescope or finderscope without
a professionally made solar filter that completely covers the front of the instrument, or permanent eye damage may result.
To avoid damage to the internal parts of your telescope, make sure the front end of the finderscope is covered with
aluminum foil or another non-transparent material. Children should use the telescope under adult supervision only.
All parts of the telescope will arrive in one box. Be careful when unpacking it. We recommend keeping the original shipping
containers. In the event that the telescope needs to be shipped to another location, having the proper shipping containers will
help ensure that your telescope survives the journey intact. Make sure all the parts are present in the packaging. Be sure to
check the box carefully, as some parts are small. No tools are needed other than those provided. All screws should be tightened
securely to eliminate flexing and wobbling, but be careful not to overtighten them, as that may strip the threads.
During assembly (and anytime, for that matter), do not touch the surfaces of the optical elements with your fingers. The optical
surfaces have delicate coatings on them that can easily be damaged if touched. Never remove mirrors from their housing, or the
product warranty will be null and void.
Telescope assembly
Attaching the OTA to a mount
Your OTA comes with a pair of hinged tube rings that may be used to attach the optical tube to a mount or a guidescope to the
OTA.
Once you have attached your optical tube to a mount, you might have to balance the assembly. Loosen the ring clamps and slide
the optical tube forward or backward within the tube rings to balance it. Do not forget to retighten the ring clamps afterward.
Finderscope assembly
A finderscope is a small wide-field telescope used to help locate and center objects in the field of view of the optical tube.
To install the finderscope follow these simple steps:
1. Locate the finderscope bracket and remove the rubber ring from it.
2. Slide the rubber ring into the groove at the center of the finderscope tube.
3. Slide the finderscope bracket into the mount on the optical tube and tighten the screw to hold the bracket in place.
4. Loosen two adjustment thumbscrews on the bracket and pull the spring pin
5. Slide the finderscope tube into the bracket until the rubber ring sits in the bracket.
6. Release the spring pin and retighten the thumbscrews.
Aligning the finderscope
The finderscope and the main telescope have to be aligned so that they point to the same spot in the sky. Alignment is best done
outdoors during the day, when it is easier to locate objects. Note that you will have to use the 35-mm extension
adapter to reach focus with most eyepieces. First, insert an eyepiece (an eyepiece with a reticle is recommended) into the
35-mm extension adapter and insert the adapter into the focuser. Point the telescope at an object at least 500 yards
(450 meters) away. Adjust the telescope so that the target object appears in the center of the field of view in the eyepiece.
Check the finderscope to see if the object is also centered there. If it is not centered, use the adjustment thumbscrews to
center the object in the field of view.
It is recommended to check the alignment before every stargazing or astrophotography session. Alignment can be done at night,
as well. Choose any bright star or a planet, center the object in the telescope eyepiece, and then use the adjustment
thumbscrews until the star or the planet is also centered in the finderscope.
Focusing the finderscope
If the image in the finderscope appears out of focus, you will have to refocus it. First, loosen the locking ring located behind the
objective lens cell on the finderscope body
Once the image appears sharp, retighten the locking ring behind the objective lens cell.
Eyepiece assembly
An eyepiece magnifies the image produced by the OTA. The eyepiece is installed into the focuser. Eyepieces are commonly
referred to by their focal length and barrel diameter. The focal length of each eyepiece is printed on the eyepiece shell.
The longer the focal length, the lower the eyepiece magnification, and vice versa. The total power of the telescope setup may
be calculated with the following formula:
Magnification = Focal Length of Telescope (mm) / Focal Length of Eyepiece (mm)
. Then, focus your view by rotating the objective lens cell in either direction.
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