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8. Care and Maintenance
If you give your telescope reasonable care, it will last a life-
time. Store it in a clean, dry, dust-free place, safe from rapid
changes in temperature and humidity. Do not store the tele-
scope outdoors, although storage in a garage or shed is OK.
Small components like eyepieces and other accessories
should be kept in a protective box or storage case. Keep the
cap on the front of the telescope when it is not in use.
Your SkyView Deluxe telescope requires very little mechani-
cal maintenance. The optical tube is aluminum and has a
smooth painted finish that is fairly scratch-resistant. If a
scratch does appear on the tube, it will not harm the tele-
scope. If you wish, you may apply some auto touch-up paint
to the scratch. Smudges on the tube can be wiped off with a
soft cloth and a household cleaner such as Windex or
Formula 409.
Cleaning the Optics
A small amount of dust or a few specks on the glass objective
(main) lens will not affect the performance of the telescope. If
dust builds up, however, simply blow it off with a blower bulb,
or lightly brush it off with a soft camel hair brush. Avoid touch-
ing optical surfaces with your fingers, as skin oil may etch
optical coatings.
To remove fingerprints or smudges from a lens, use photo-
graphic-type lens cleaning fluid and lint-free optical lens
cleaning tissue. Do not use household cleaners or eyeglass-
type cleaning cloth or wipes, as they often contain undesirable
additives like silicone, which don’t work well on precision
optics. Place a few drops of fluid on the tissue (not directly on
the lens), wipe gently, then remove the fluid with a dry tissue
or two. Do not “polish” or rub hard when cleaning the lens, as
this will scratch it. The tissue may leave fibers on the lens, but
this is not a problem; they can be blown off with a blower bulb.
Never disassemble the telescope or eyepieces to
clean optical surfaces!
9. Specifications
Optical tube: Seamless aluminum
Objective lens diameter: 90mm (3.5")
Objective lens glass: crown and flint, achromat
Objective lens coating: multi-coated
Focal length: 1000mm
Focal ratio: f/11
Eyepieces: 25mm and 9mm Kellner, fully coated, 1.25"
Magnification: 40x (with 25mm), 111x (with 9mm)
Focuser: Rack and pinion
Diagonal: 90° star diagonal, mirror type, 1.25"
Finder scope: 6x magnification, 30mm aperture, achromatic,
crosshairs
Mount: German-type equatorial
Tripod: Aluminum
Motor drives: Optional
