The ULX 66mm ED is designed to minimize chromatic aberration.
The objective lens is comprised of two individual lens elements,
one of which is made of “ED” (Extra-low Dispersion) glass, a spe-
cial type of glass that has superior refractive properties compared
to normal types of glass. The use of this ED glass minimizes the
amount of chromatic aberration, resulting in a crisper, sharper
image compared to that seen in standard spotting scopes.
The Carry Case
The ULX 66mm ED comes with a rugged “view-through” carry
case with a shoulder strap. This high-quality case allows the case
to stay on the spotting scope when it is in use (Figure 2). To use
the spotting scope in its case, first pull back the two flaps that
cover the mounting block and focus knobs. The telescope can now
be connected to a tripod. Now, unzip the eyepiece end of the case
and fold back the flaps; the nylon “hooks” strips on the flaps can
connect to the nylon “loops” strips on the body of the case (Figure
2). Remove the front cover of the case, remove the dust cap and
cover from the spotting scope, and you’re ready to view! Leaving
the case on while viewing through the spotting scope provides an
extra measure of protection when used outdoors.
Using an Optional Camera Adapter
An optional camera adapter is available for the ULX 66mm ED. This
adapter, along with an optional T-ring (camera model specific) and
your DSLR camera, can be used to capture images through the
spotting scope. To use the camera adapter, you must first remove
the zoom eyepiece from the body of the spotting scope. This is
done by rotating the knurled ring at the base of the eyepiece coun-
terclockwise about a quarter turn, and then pulling the eyepiece
out of the spotting scope. Now, connect the camera adapter to the
spotting scope by threading it clockwise onto the spotting scope.
Remove the camera lens connected to your camera and connect
the T-ring in place of the lens. Then thread the camera and T-ring
onto the camera adapter. Center the image in the camera’s view-
finder, and focus using the spotting scope’s focusing knob.
Care and Maintenance
Although the ULX 66mm ED is durable and waterproof, it should
avoid prolonged, unnecessary exposure to the elements. Keep the
spotter in its case and indoors when not in use. If it gets splashed
with water, or is used in the rain, the spotting scope will not be
harmed. It is internally purged with nitrogen and sealed, so water
on the body or optics is not a problem. Simply wipe water off the
body with a cloth or towel and use lens tissue to dry the objective
and eyepiece lenses after a wet observing session. It is also rec-
ommended to leave the spotting scope in a dry place with the caps
off overnight to let it completely dry out. Store the instrument in a
cool, dry place; storage in a humid environment will result in mold
growth on the exterior of the lenses which can destroy the optical
coatings. This is not covered by the warranty.
Cleaning the Lenses
The lens surfaces of the ULX 66mm ED are coated with anti-reflec-
tion multi-coatings, which can be damaged with careless handling.
Avoid touching lens surfaces with your fingers or any coarse mate-
rial. Clean the lenses if they get noticeably dirty. Always use lens
cleaning tissue and fluid designed specifically for telescope optical
coatings. Do not use regular tissue or fluids made for eyeglasses or
household use. Do not disassemble the spotting scope to clean it.
To clean the lenses, first blow air on the lens with a blower bulb
or compressed air to remove any large particles. Then brush the
lens with a soft lens brush and blow air on it again to remove any
dislodged particles. Put two drops of lens cleaning fluid on a sheet
of lens tissue (never directly on the lens). Wipe the lens gently
with a circular motion, taking care to avoid undue pressure or rub-
bing, which can scratch the coatings. Quickly remove the excess
fluid by wiping with a clean, dry lens tissue. For the large objective
lens, clean only a small area at a time, using a fresh lens tissue
on each area.
Specifications
Objective lens:
Air-spaced doublet (2 elements), one lens
element made from S- FPL51 ED glass
Objective lens diameter: 66mm
Optical coatings:
Fully multi-coated throughout
Prism material:
BAK-4
Eyepiece design:
8 lens elements in 5 groups
Magnification range:
16x to 50x continuous zoom
Field of view:
2.25° at 16x, 1.3° at 50x
Eye relief:
25mm at 16x, 16mm at 50x
Eyeguard:
Twist-up, rubber covered
Focusing:
Coarse and fine focus knobs, 1 turn of coarse
focus knob equals 10 turns of fine focus knob
Close focus:
Approximately 20 feet
Body tube:
Polycarbonate construction with rubber
armoring over prism section
Lens shade:
Retractable
Tripod attachment:
Mounting block accepts 1/4"-20 studs, spotting
scope can rotate relative to mounting block
Weather resistance:
Waterproof
Weight:
3 lbs. 9 oz.
Length:
15 inches
Case:
Soft carry case with shoulder strap included
Tripod:
Optional
Providing Exceptional Consumer Optical Products Since 1975
OrionTelescopes.com
Customer Support (800)-676-1343
E-mail: [email protected]
Corporate Offices (831)-763-7000
89 Hangar Way, Watsonville CA 95076
Figure 2.
The ULX 66m ED can be used while still in its case. (Tripod
sold separately.)
Nylon “hooks”
Front cover
of case
Nylon “loops”
