4
Focuser Rotation
The focusers on the EON 85mm and 104mm ED-X2 are
fully rotatable. Rotating the focuser can be useful for framing
an imaging target on a camera’s sensor, or for orienting the
focus knobs in a comfortable position depending on where the
telescope is pointing. The EON 85mm ED-X2 has one rota-
tion interface, between the focuser and the optical tube, while
the EON 104mm ED-X2 has two rotation interfaces, one just
behind the tapered collar where the focuser meets the optical
tube and the other at the back end of the focuser housing, as
shown in the figure
(see Figure 2A)
. The rotation mecha-
nisms have three recessed setscrews that must be slightly
loosened to permit rotation, as well as a thumbscrew lock.
Figure 3.
Locate the two threaded holes on the focuser,
as shown in (A), then attach the finder scope shoe with the
provided flat-head machine screws, as shown in (B).
To rotate the focuser, loosen the rotation lock thumbscrew
(Figure 2B)
a half turn or so counterclockwise. Gently rotate
the focuser to the desired orientation, then lock it in place by
turning the lock thumbscrew clockwise. If you find the focuser
is difficult to rotate, you may have to very slightly loosen the
three rotation tensioning setscrews around the focuser with a
small flat-blade screwdriver. If, on the other hand, you feel too
much “play” in the focuser when the thumbscrew is loosened,
you may need to tighten these setscrews a bit.
NOTE: Upon receipt of your telescope, grasp the focuser
then loosen the focuser rotation lock thumbscrew and
attempt to rotate the focuser. If it rotates too freely or feels
loose, you’ll need to tighten the three focuser rotation set-
screws using a small flat screwdriver until you feel resis-
tance when rotating the focuser. Do the same for the rota-
tion interface near the 2" accessory collar. If you do not
plan to use one (or either) of the rotation interfaces, we
recommend tightening down the three setscrews as well
as the thumbscrew lock.
Finder scope Dovetail shoe
Your EON ED-X2 comes with a dovetail finder scope shoe
that allows attachment of an optional Orion finder scope,
reflex sight, mini guide scope, or the Orion Dual Finder Scope
bracket. It attaches to the top left surface of the focuser with
two screws, which are included. (If more than two screws are
included, use the two shortest screws. Also, the included nuts
are not needed.) Locate the two holes as shown in
Figure
3A
. If they have setscrews in them, you will need to remove
them with a 2mm Allen wrench before you can install the find-
er scope shoe. Use a small Philips screwdriver to install the
finder scope shoe with the two screws provided
(Figure 3B)
.
Make sure the shoe is oriented so that the notch is facing to
the rear.
Tube Rings and Mounting Plate
Your EON ED-X2 refractor comes with a pair of heavy duty,
CNC-machined, clamp-style tube rings. Each has a flat boss
on the top and bottom with five ¼"-20 threaded holes for
attachment of mounting plates. Also included is a 7" universal
mounting plate made of machined and anodized aluminum.
Four ¼"-20 socket head cap screws are also provided.
Hard case
The hard case that comes with your EON ED-X2 should be
used to transport and store the telescope when it’s not in use,
to keep the instrument clean and protected from damage.
3. Operating the EON ED-X2
The EON 85mm and 104mm ED-X2 refractors are versatile
telescopes designed for both high-performance imaging and
visual pursuits. Their moderately fast focal ratios and premium
ED air-spaced triplet optics—incorporating both FPL-51 and
FPL-53 Ohara ED glass elements—combine to make them
especially superb instruments for imaging with CCD or DSLR
cameras.
Now that you have become familiar with the different features
and functions of the telescope, you are ready to begin using
A.
B.
Notch
Holes for finder scope shoe
