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INSTRUCTION MANUAL
Orion® VersaGo E-Series 90mm
Altazimuth Refractor
#52590
Providing Exceptional Consumer Optical Products Since 1975
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.
Customer Support:
www.OrionTelescopes.com/contactus
Corporate Offices:
89 Hangar Way, Watsonville CA 95076 - USA
Copyright © 2018 Orion Telescopes & Binoculars
IN 615 Rev. A 04/18
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Congratulations on your purchase of a quality Orion product. The VersaGo E-Series 90mm
Altazimuth Refractor is a versatile and easy-to-use telescope designed for exploring scenic daytime
vistas as well as scanning the night skies for celestial treasures.
These instructions will help you set-up, properly use and care for your instrument. Please read them
over carefully before getting started.
A
E
C
J
G HI
F
Figure 1. Included parts of the VersaGo E-Series Mount
Included Parts
Unpack all of the parts and lay them out in your workspace.
Make sure all the parts listed below and shown in Figure 1 are
present. Save the shipping box and packaging material. In the
unlikely event that you need to return the mount, you must use
the original packaging. Initial assembly of the mount is easy and
should take only about 15 minutes.
WARNING: NEVER look directly at the Sun
through your telescope—even for an instant—
without a professionally made solar filter that
completely covers the front of the instrument,
or permanent eye damage could result. Young
children should use this telescope only with
adult supervision.
B
Plastic disk
D
Parts List
A Tripod
B Altazimuth arm
C Accessory tray and leg brace
D Micro-motion cables
(short and long)
E Optical tube
F 25mm Plossl eyepiece, 1.25"
G 10mm Plossl eyepiece, 1.25"
H Red dot finder scope
I 45-degree correct-image diagonal
J Dust cap
K MoonMap 260 (not shown in Fig. 1)
2
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1. Assembly
1. Stand the tripod (A) upright and spread the legs apart a
little. Keep the tripod legs at their shortest (fully retracted)
length for now; you can extend them to a more desirable
length later, after the mount is fully assembled.
2. To attach the accessory tray (C), place a hooked tab on one
of the three corners of the tray over the screw in the leg collar, as shown in Figure 2A. Connect the tray to the other two
legs in the same manner (2B), then tighten all three of the
tray lock knobs (2C) to secure the tray in place.
3. Now you’ll install the altazimuth arm (B) onto the tripod.
Remove the azimuth tension knob and washer from the center shaft on the bottom of the arm. Then place the base of the
arm on the tripod’s mounting platform, inserting the center
shaft into the hole in the tripod’s mounting platform. (NOTE:
The large plastic disk, which is identified in Figure 1,
goes between the mounting arm and the tripod’s mounting platform.) Then replace the washer and azimuth tension
knob to secure the arm in place (Figure 3).
4. Attach the two micro-motion cables (D). The shorter of the two
is usually preferred for the altitude axis and the longer one
for the azimuth axis. Loosen the thumbscrew at the end of
the cable, then line up the cable end so that the thumbscrew
is over the flat side of the axle on each axis (Figure 4). Press
the cable end over the axle, then tighten the thumbscrew to
secure the cable in place. The thumbscrew should protrude
down into the dimple in the axle, to insure that the cable will
not slip off the axle. Once attached the micro-motion cables
should appear as in Figure 5.
Lock
knob
2A
Screw
Leg
collar
Hooked tab
Accessory tray
Attaching the Telescope Optical Tube
to the Mount
The E-Series Altazimuth Mount features a dovetail mounting
saddle that accommodates Vixen-style mounting bars (Figure
6A). Slide the dovetail bar attached to the side of the optical
tube into the saddle, then secure it in place by tightening the
saddle lock knob (Figure 6B). (You may have to loosen the
saddle lock knob a little before attempting to slide in the dovetail
bar, to allow clearance for the bar.)
Installing the Accessories
With the tube now securely attached to the mounting arm,
install the red dot finder scope (H) on the optical tube. Do this
by orienting the finder scope as shown in Figure 7 and slide the
bracket foot back into the finder scope base as far as it will go.
Now insert the correct-image diagonal (I) into the focuser drawtube and tighten the thumbscrew on the drawtube collar. Then
insert the 25mm eyepiece (F) into the diagonal and secure it by
lightly tightening the thumbscrew on the diagonal (Figure 8).
The telescope is now completely assembled and should appear
as in Figure 9! Before it can be effectively used, however, there
are a couple of things to do to prepare the telescope for operation.
2B
2C
Figure 2. A) Hook the tray corner over the screw in the leg
collar, B) Repeat for the other two legs, then C) Tighten all
three tray lock knobs
3
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Washer
Azimuth
tension knob
Figure 3. Secure the altazimuth arm to the tripod with the
washer and azimuth tension knob.
Saddle
6A
Axle
Thumbscrew
Dimple
Micro-motion
cable
Figure 4. When attaching the micro-motion cables, make
sure the thumbscrew is directly over the dimple on the flat
side of the axle.
Altitude tension
knob
Dovetail bar
Lock knob
6B
Figure 6. A) The dovetail saddle B) Slide the dovetail bar
on the optical tube into the saddle of the mounting arm,
then tighten the lock knob to secure the instrument onto
the mount.
Altitude micromotion cable
Azimuth micromotion cable
Azimuth
tension knob
Figure 5. The mount has two large tension knobs and
two micro-motion cables to allow precise movement of
your instrument.
4
Finder scope
base
Figure 7. Slide the red dot finder scope’s bracket into its base.