12
NOTE: Use of the 2X Brarlow lens with the 1.5 erecting lens is not recommended (See Fig.14.)
The image erecting lens provides 1.5x magnification, which means that the K25
eyepiece will magnify objects from 28x to 42x when used in conjunction with the image
erecting lens.
H. CARE AND CLEANING OF THE OPTICS:
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.
1) Keeping 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 downward 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. 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. 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 FROM THE CAN MIGHT ESCAPE AND
DAMAGE THE OPTICAL SURFACES.
(Fig. 14)
