4
(
#8894
), you will most likely not need any extension tubes to
reach focus. But if you choose to use the telescope without
a flattener or reducer, it’s likely that you will also need a 2"
extension tube to reach focus with a DSLR or dedicated astro
camera.
If you wish to use a 3rd party robotic focus motor for automat-
ed focus, use the threaded hole for the focus lock thumbscrew
(
Figure 2
) to secure the motor bracket. The lock knob is not
normally used when a robotic focuser is attached and can be
removed. Please make sure to find a screw that is only long
enough to engage the threads and tighten down the bracket
– it needs to be short enough to NOT begin to lock down the
focus mechanism internally. Use washers if necessary to hold
the screw higher and away from locking down the focuser. The
focus lock knob threaded hole is M4 x 0.7mm
Care & Maintenance
Give your telescope reasonable care and it will last a lifetime.
When not in use, keep its dust cover on as well as the dust cap
on the eyepiece opening. Store it indoors or in a dry garage.
Do not leave the telescope outside except when using it. The
optical tube is aluminum and has a smooth painted surface
that should resist scratches and smudges. If a scratch does
appear on the tube, it will not harm the telescope. Smudges
on the tube can be wiped off with standard mild household
cleaners.
Any quality optical lens tissue and cleaning fluid specifically
designed for multi-coated optics can be used to clean the tele-
scope’s objective lens as well as the lenses of the eyepieces
and finder scope. 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 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!
Clean only a small area at a time, using a fresh lens tissue on
each area. Never reuse tissues.
Specifications
Optical tube:
Seamless aluminum
Objective lens diameter:
80mm (3.1")
Objective lens:
Apochromatic doublet, rear element made of Fk-61 ED glass, air-spaced
Objective lens coating:
Fully multi-coated (all air-to-glass surfaces multi-layer coated)
Lens cell:
Machined aluminum
Focal length:
560mm
Focal ratio:
7.0
Focuser:
Rack and Pinion, 10:1 dual speed, compression locking, 2" w/ 1.25" adapter
Back focus:
153mm
Mounting bar:
Vixen dovetail rail with slots and included ¼"-20 tripod threaded hole
Tube rings:
Two hinged, felt lined rings, multiple M6-1.0 holes included
Weight:
5 lbs. 13 oz.
Length:
17.25"
Corporate Offices:
89 Hangar Way, Watsonville CA 95076 - USA
Toll Free USA & Canada:
(800) 447-1001
International:
+1(831) 763-7000
Customer Support:
Copyright © 2021 Orion Telescopes & Binoculars. All Rights Reserved. No part of this product instruction or any of its contents
may be reproduced, copied, modified or adapted, without the prior written consent of Orion Telescopes & Binoculars.
A N E M P L O Y E E - O W N E D C O M P A N Y
One-Year Limited Warranty
This Orion product is warranted against defects in materials or workmanship for a period of one year from the date of purchase.
This warranty is for the benefit of the original retail purchaser only. During this warranty period Orion Telescopes & Binoculars will
repair or replace, at Orion’s option, any warranted instrument that proves to be defective, provided it is returned postage paid.
Proof of purchase (such as a copy of the original receipt) is required. This warranty is only valid in the country of purchase.
This warranty does not apply if, in Orion’s judgment, the instrument has been abused, mishandled, or modified, nor does it apply
to normal wear and tear. This warranty gives you specific legal rights. It is not intended to remove or restrict your other legal rights
under applicable local consumer law; your state or national statutory consumer rights governing the sale of consumer goods
remain fully applicable.
For further warranty information, please visit www.OrionTelescopes.com/warranty.
