Orion 9854 Specifications, Terrestrial Viewing, Care and Maintenance, Cleaning Lenses

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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