Orion SHORTTUBE 80-A - Manual (Page 7)

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Any quality optical lens tissue and cleaning fluid specifically Any quality optical lens tissue and cleaning fluid specifically
designed for multi-coated optics can be used to clean the
telescope’s objective lens as well as the lenses of the eye-
pieces and finder scope. 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, or lightly brush the lens
with a soft camel hair brush. 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! On larger lenses, clean only a small
area at a time, using a fresh lens tissue on each area. Never
reuse tissues.
The ShortTube 80-A includes a soft-sided carrying case.
The carrying case will hold the ShortTube 80-A safely dur-
ing transport and doubles as a convenient storage spot
when the telescope is not in use. You will need to remove
accessories such as the eyepiece, star diagonal, and finder
scope in order to place the telescope into the case. The
finder scope can be stored on top of the padded velcro flap
that covers the telescope. The other accessories can be
stored in the exterior pockets of the carrying case for easy
transport.
Specifications
9947: ShortTube 80-A
Objective lens:
Achromatic doublet, air-
spaced
Objective lens coatings: Fully multi-coated
Aperture: 80mm
Focal length: 400mm
Focal ratio: f/5
Focuser: Rack-and-pinion, 1.25",
accepts camera T-ring
Optical tube length: 15"
Weight of optical tube assembly: 3lbs. 7oz.
Mounting provision: Dovetail tube ring
mounting plate with
1⁄4"-20 threaded holes,
attaches to telescope
via tube rings
(included)
Finder scope: 8x Magnification, 40mm
aperture, achromatic,
crosshairs
Eyepieces: 20mm (20x) and 9mm
(44x) Expanse™,
1.25" barrel diameter,
multi-coated, threaded
for Orion filters
Star diagonal: 90° Mirror, 1.25" barrel
diameter
Case: Deluxe soft case with
exterior pockets