Citiwell ng55cs オーナーマニュアル
If you try to use the telescope before it has adjusted to the outdoor temperature you
may find it somewhat difficult to focus accurately.
may find it somewhat difficult to focus accurately.
3) Find a location away from any direct light source. If you live in a large town or city,
your viewing will probably improve the farther you move away from the ‘light
pollution’ of city lights. The sky glow of a town or city can dramatically reduce the
telescope’s performance and viewing capabilities.
pollution’ of city lights. The sky glow of a town or city can dramatically reduce the
telescope’s performance and viewing capabilities.
4) Remove the round plastic dust cover (lens cap) from the front of your telescope.
5) We strongly recommend that you begin your viewing session with the 30X zoom
power. It will give you the widest angle and the brightest, sharpest view.
When possible, avoid sudden temperature changes, as the moisture in the air may
condense as water droplets (dew) on the objective lens. If dew forms on your objective
lens do not wipe it off. Take your telescope indoors and follow Step 2 – below on this
page.
CARE AND CLEANING OF OPTICS
Optical components of a telescope get dirty over time. Dirt or dust on a lens should be
removed 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.
removed 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 the dust cap on during storage and transport and keeping the telescope in
its case will reduce dust collection.
2) Condensation may collect on the optical surfaces when the telescope is not in use.
Remove the dust cap and allow the moisture to evaporate naturally. Point the telescope
downward to minimize the accumulation of airborne dust.
Remove the dust cap and allow the moisture to evaporate naturally. Point the telescope
downward to minimize the accumulation of airborne dust.
3) Once all moisture has evaporated, replace the dust cap.
3) Filtered, compressed air may be used to remove surface dust from lenses and
mirrors. Remove the dust cap. 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 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.
gently expel some air and any condensation or dust that has accumulated on the
discharge tube. Spray the lens 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.
If you keep the dust cap on your telescope when it is not in use and avoid handling the
lenses, only minimal optical maintenance of your telescope should be required.
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