Schmidt-Cassegrain Instruction Manual
|B. UNPACKING AND INSPECTION
As you begin to unpack your
telescope from its cartons, you will probably be interested in setting
it up right away. We certainly understand your excitement, but please take
a few minutes to read this page before doing so. You should verify that
you have all the proper equipment, and that it has arrived to you undamaged.
NOTICE! Never use a telescope or spotting scope to look at the Sun! Observing
the Sun, even for the shortest fraction of a second, will cause irreversible
damage to your eye as well as physical damage to the telescope or spotting
We strongly recommend
that you keep your original packing materials. If it should ever become
necessary for you to return your telescope to the Meade factory for servicing,
these will help ensure that no shipping damage will occur.
Meade LX50 telescopes supplied
to countries outside the U.S.A. are identical to those offered domestically.
Please Look Everything Over
Meade Instruments and your
shipper have taken precautions to ensure that no shipping damage will occur.
But if your shipment has suffered severe vibration or impact damage (whether
or not the shipping cartons show damage) then it is important that you
retain all the original packing and contact the shipper to arrange a formal
inspection of the package(s). This procedure is required prior to any warranty
servicing by Meade Instruments.
Inspecting the Optics: Note on the "Flashlight" Test
If a flashlight or other
high-intensity light source is pointed down the main telescope tube, you
may at first be shocked at the appearance of the optics. To the uninitiated,
the view (depending on your line of sight and the angle the light is coming
from) may reveal what would appear to be scratches, dark or bright spots,
or just generally uneven coatings, giving the appearance of poor surface
quality. These effects are only seen when a high intensity light is transmitted
through lenses or reflected off the mirrors, and can be seen on any high
quality optical system, including the giant research telescopes in use
today. It should be pointed out, however, that optical quality cannot be
judged by this grossly misleading "test," but through careful star testing.
The Flashlight Test causes even the very best optics to look "terrible."
As the high intensity light
passes through the Schmidt corrector plate, most (about 98%+) of it is
transmitted through while the rest of the light scatters through the glass.
As the light hits the mirrored surfaces, most (about 94%) of it is reflected
back while the rest of it scatters across the coatings. The total amount
of scattered light will be significant, and its effects allow you to see
microscopic details that are normally invisible to the unaided eye. These
anomalous details are real, but their combined effects will in no way impose
limits on the optical performance, even under the most demanding observing
or imaging criteria.
Caution: 10" LX50 Owners
Do not attempt to turn the
focuser knob of the optical tube until you have read this note!
Next to the base of the
focuser you will see a red-colored slotted head bolt. This bolt is used
only for safety in shipment. Remove this bolt before attempting to turn
the focuser knob. In its place, insert the rubber plug provided as a dust
protector (this rubber plug is included with your hardware package).
Your focuser is now operational.
Warning! The 10" LX50
should never be commercially shipped without this red-colored bolt in place.
This is essential during commercial transport where rough handling may
occur. For your personal transport and storage, you will never have to
use this bolt again.
TO COMMERCIALLY RE-SHIP
THE 10" LX50, BE SURE TO FOLLOW THIS PROCEDURE:
1. Turn the focuser knob
clockwise until it stops. This will bring the primary mirror all the way
back in the tube.
2. Remove the rubber plug
and insert the red-headed bolt. Thread it in to a firm snug feel. Do not
overtighten. (If you have misplaced the red-headed bolt, you may use any
other bolt that is 1/4-20x1" long.
Please note that commercial
shipment of the 10" LX50 Telescope without the safety bolt in place and
being packed in the original factory-supplied shipping cartons, as described
above, is done at the owner's risk and your warranty may be voided if shipping