Attivio TM0090P Gebruiksaanwijzing - Pagina 6

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USING YOUR TELESCOPE

1) Take your telescope outside. Viewing objects through closed or open windows is not

recommended. Your view can be distorted by reflections in the glass of a closed

window or by air currents, of differing temperatures, passing through an open window.

2) Let your telescope adjust to the outside temperature. Your telescope will perform much

better if the lenses and the air inside the tube are the same temperature as outside. It

may take up to 30 minutes to equalize the temperatures when the difference in

temperatures is extreme.

3) Find a location far from glaring light. If you live in an urban area, your viewing will

probably improve the farther you move away from the city lights. The skyglow of a

town or city can dramatically reduce the telescope's performance and viewing

capabilities.

When possible, avoid sudden temperature changes, as the moisture in the air will

condense on the objective lens. Should this occur after bringing your telescope inside,

leave the lens cap off the objective lens, tilt the objective (front) lens face down, and wait

until the telescope reaches room temperature.

With the 45º prism already attached and in place, we recommend starting your viewing

with the low power 20mm eyepiece because it gives you the widest angle with the

brightest and sharpest views. To adjust the angle of the telescope, loosen the azimuth

lock knob by turning it counterclockwise. Adjust the telescope to the desired angle, then

tighten the azimuth lock knob.

Care and Cleaning of Optics

Optical components of a telescope get dirty over time. Dirt or dust on a lens should be

removed only with the utmost care. A considerable amount of dirt or dust would have to

accumulate on the optical surface before your view would be compromised.

1.) Keeping any dust caps on during storage and transport will reduce dust collection.

2.) Condensation may collect on the optical surfaces when the telescope is not in use.

Remove the dust caps and allow the moisture to evaporate naturally. Point the

telescope downwards to minimize the accumulation of airborne dust.

3.) Once all moisture has evaporated, replace the dust caps.

4.) Filtered compressed air may be used to remove surface dust from lenses and mirrors.

Remove the dust cap and the dew shield. Once removed, point the can away from the

lens and gently expel some air and any condensation or dust that has accumulated on

the discharge tube. Spray the lens or mirror with short bursts of air to carefully remove

the dust particles. DO NOT HOLD THE TRIGGER OF THE COMPRESSED AIR CAN

FOR EXTENDED PERIODS BECAUSE PROPELLANT FROM THE CAN MIGHT

ESCAPE AND DAMAGE THE OPTICAL SURFACE.

If, after several attempts, you cannot remove the particles, take the telescope to an

optical professional for cleaning.