15
the brightest and best deep-sky objects for viewing with your
Observer 60.
Terrestrial Viewing
The Observer 60 can be used for long-distance viewing over
land. We recommend using an optional 45° correct-image
prism diagonal instead of the included 90° mirror star diago-
nal. The correct-image diagonal will yield upright, non-reversed
images and provide a more comfortable viewing angle.
For terrestrial viewing, it’s best to stick with low-powered eye-
pieces that yield a magnification under 80x. At higher powers,
images rapidly lose sharpness and clarity due to “heat waves”
caused by Sun-heated air.
Remember to aim well clear of the Sun, unless the front of the
telescope is fitted with a professionally made solar filter.
Care and Maintenance
If you give your telescope reasonable care, it will last a lifetime.
Store it in a clean, dry, dust free place, safe from rapid chang-
es in temperature and humidity. Do not store the telescope
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 caps on the
front of the telescope and on the focuser drawtube when not
in use.
Your Observer 60 telescope requires very little mechanical
maintenance. The optical tube is aluminum and has a smooth
painted finish that is fairly scratch resistant. If a scratch does
appear, it will not harm the telescope.
Cleaning Lenses
Any quality optical lens cleaning tissue and optical lens clean-
ing fluid specifically designed for multi-coated optics can be
used to clean the Observer 60’s objective lens and exposed
lenses of your eyepieces. Never use regular glass cleaner or
cleaning fluid designed for eyeglasses.
Before cleaning with fluid and tissue, blow any loose particles
off the lens with a blower bulb or compressed air. Then apply
some cleaning fluid to a tissue, never directly on the optics.
Wipe the lens gently in a circular motion, then remove any
excess fluid with a fresh lens tissue. Oily fingerprints and
smudges may be removed using this method. Use caution -
rubbing too hard may scratch the lens. For the larger surface
of the objective lens, clean only a small area at a time, using a
fresh lens tissue on each area. Never reuse tissues.
7. Specifications
Optical tube: Aluminum
Objective lens diameter: 60mm
Objective lens: Achromatic, air-spaced, coated
Focal length: 700mm
Focal ratio: f/11.7
Focuser: Rack and pinion, accepts 1.25" eyepieces
Eyepieces: 25mm and 10mm Kellner eyepieces, 1.25"
Magnification: 28x (with 25mm) and 70x (with 10mm)
Tripod: Aluminum
Mount: Altazimuth yoke, fine adjustment for altitude
Star diagonal: Mirror, 1.25"
Finder: EZ Finder II reflex sight
Weight: 5.7 lbs.
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