7
care & Maintenance
Give your telescope reasonable care and it will last a lifetime.
Store it indoors or in a dry garage. The included padded soft
carry case is an excellent container for storing and transport-
ing your Express 80mm. Do not leave the telescope outside
except when using it. The optical tube is aluminum and has a
smooth anodized surface that resists scratches and smudges.
If a scratch does appear on the tube, it will not harm the tele-
scope. Smudges on the tube can be wiped off with standard
household cleaning fluid.
Any quality optical lens tissue and cleaning fluid specifically
designed for multi-coated optics can be used to clean the
telescope’s objective lens. Never use regular glass cleaner or
cleaning fluid designed for eyeglasses. Before cleaning with
fluid and tissue, however, 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, then
remove any excess fluid with a fresh lens tissue. Oily finger-
prints and smudges may be removed using this method. Use
caution; rubbing too hard may scratch the lens. Clean only a
small area at a time, using a fresh lens tissue on each area.
specifications
Objective lens: Achromatic, fully multi-coated
Aperture: 80mm
Focal length: 480mm
Focal ratio: f/6
Focuser: Crayford, 2", 1.25" adapter included
Optical tube length: 338mm
Weight of optical tube assembly: 5.5 lbs.
Mounting block: Accepts 1/4"-20 threaded studs