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G. A NOTE ON TERRESTRIAL VIEWING:
When viewing through a standard telescope, you may notice that when you observe a
terrestrial object on land or water, it appears upside down.
To correct this, the COLEMAN CDB804AZ3 is equipped with an Erecting Image Diagonal
Prism (I). This accessory is inserted in the eyepiece holder of the telescope between the
eyepiece and the telescope. With the Erecting Image Diagonal Prism, objects will appear in
their proper orientation for terrestrial and land observation.
NOTE: The eyepieces must be used together with the Erecting Image Diagonal Prism.
H.
CARE AND CLEANING OF THE OPTICS:
1. The optical components of a telescope will 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.
2. Keeping dust caps on during storage and transport will reduce dust collection.
3. 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
downward to minimize the accumulation of airborne dust.
4. Once all moisture has evaporated, replace the dust caps.
5. 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. Clean eyepieces and optical surfaces with special lens
paper only. Eyepieces should be handled with care. Avoid touching optical surfaces.
DO NOT HOLD THE TRIGGER OF THE COMPRESSED AIR CAN FOR EXTENDED PERIODS
BECAUSE PROPELLANT MAY ESCAPE AND DAMAGE THE OPTICAL SURFACES.
If, after several attempts, you cannot remove the particles, take the telescope to an optical
professional for cleaning.
If you keep the dust caps on your telescope when it is not in use and avoid handling the lenses or
mirrors, only minimal optical maintenance of your telescope should be required. Extensive
cleaning is usually only necessary every few years.
I. WHAT TO LOOK FOR IN THE NIGHT SKY:
There is a whole universe of objects you could view at night, so where do you start? We
recommend starting with the most prominent objects first.
The Moon
The moon is the easiest target to find at night. When the moon is in full position, it bathes the night
with a silvery light that washes the sky of all but the brightest objects. The best time to view the
moon is not when it is full, but rather when it is less than half full. The dividing line between dark
and light on the moon, called the terminator, shows the best detail in the craters and mountains.
Summary of Contents for CDB804AZ3
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