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INSTRUCTION MANUAL

MODEL #93648

OFF-AXIS GUIDER

PARTS LIST

Off-Axis Guider

SCT Adapter

Male M48 Camera Adapter Male M42 T-thread Camera Adapter

Long T-thread

Spacer Ring

(24.25mm)

Medium T-thread Spacer Ring

(11.55mm)

Short T-thread Spacer

Ring (6mm)

Female M42

T-thread Adapter

Medium M48 Spacer Ring

(11.55mm)

2 I INTRODUCTION

Fig. 1

INTRODUCTION

Your Celestron Off-Axis Guider (OAG) allows you to take accurate, long exposure astroimages when used with an

autoguider. Since the autoguider and imaging camera share the same telescope, you will achieve tracking accuracy

greater than you would with a separate guide scope.

Female M48 Adapter

SYSTEM REQUIREMENTS I 3

TELESCOPE

To attach the front of the OAG to the telescope,

the telescope must have M42 T-threads, M48

threads, or 2” Schmidt-Cassegrain style threads.

If your telescope has a 2” visual back, you will

need to provide a camera adapter to attach the

telescope to the Off-Axis Guider. Camera adapters

are commonly available that adapt from 2” to M42

T-thread (also called T2).

Note that because the OAG consumes a signicant

amount of inward focus travel, some telescopes

will not be able to reach focus with this accessory.

Most Newtonian reectors and some refractors

do not have enough inward focus travel to

accommodate the Off-Axis Guider. Refractors

designed for astroimaging typically have plenty of

focus travel, as do most catadioptric telescopes

such as the Schmidt-Cassegrain or EdgeHD.

OAG BACKFOCUS

You may need to congure the OAG to your

particular telescope, camera, and autoguider

combination. The measurements listed below

refer to the actual length the part consumes when

installed on the telescope.

OAG Body: 29mm

SCT Adaper:25.3mm

Male M42 and M48 camera adapters: 12.5mm

Female M42 and M48 telescope adapters: 4.5mm

Short T-thread Spacer Ring: 6mm

Medium T-thread Spacer Ring: 11.55mm

Long T-thread Spacer Ring: 24.25mm

Medium M48 Spacer Ring: 11.55mm

IMAGING CAMERA

A CCD camera or specialized astroimaging

camera should have female T-threads or 48mm

threads. It will attach to one of the two camera

adapters included with the OAG.

DSLR cameras require a T-ring specic to the make

and model of the camera. Canon and Nikon T-rings

are available from Celestron. Full frame DSLR cameras

should use a wide T-ring with 48mm threads to fully

illuminate the sensor’s eld of view.

Fig. 2

1.25” Holder Thumbscrews

Helical Focus

Adjustment

Pick-Off Prism

Autoguider Camera

Adapter T-threads

Focus Lock

Thumbscrew

Adapter Attachment &

Rotation Thumbscrews

SYSTEM REQUIREMENTS

The Off-Axis Guider (OAG) requires a telescope, imaging camera, autoguider, and a mount tracking

equatorially with autoguiding capability. You should already be familiar with these items before using

the Off-Axis Guider.

Refer to Figure 2 to familiarize yourself with the OAG.

Produktspecifikationer

Varumärke:	Celestron
Kategori:	Inte kategoriserad
Modell:	Off-Axis Guider
Enhetsplacering:	Aanrecht
Färg på produkten:	Zwart
Inbyggd display:	Nee
Bredd:	160 mm
Djup:	260 mm
Höjd:	250 mm
Snäll:	Koffie
Husmaterial:	Kunststof
Tillgångar:	800 W
Automatisk avstängning:	Ja
Kapacitet i koppar:	5 kopjes
Antidroppfunktion:	Ja
Göra kaffe:	Ja
Avtagbar vattentank:	Ja
Varm tallrik:	Ja
AC-ingångsfrekvens:	50 - 60 Hz
Typ produkt:	Filterkoffiezetapparaat