Orion 5521 User Manual

INSTRUCTION MANUAL

Orion®

Deluxe Off-Axis Guider

#5521

Providing Exceptional Consumer Optical Products Since 1975

Customer Support [phone]

E-mail: [e-mail]

OrionTelescopes.com

Corporate Offices [phone]

89 Hangar Way, Watsonville, CA 95076

IN 351 Rev. B 08/09

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Figure 1a.

Congratulations on your purchase of the Orion Deluxe
Off-Axis Guider. This useful imaging accessory enables

you to image and guide through the same telescope,
thereby eliminating the need for a separate guide scope
which also saves weight on your mount. The Deluxe Off­Axis Guider is especially useful for Schmidt-Cassegrain
telescopes or other systems that are prone to optical flex­ure or mirror shift. Since the autoguider detects the exact
same movement as the imaging camera, you are assured
highly-accurate tracking.

Parts List

1. Deluxe Off-Axis Guider Main Body

2. 2" Nosepiece

3. 30mm Extension

4. 17mm Extension

5. 7mm Extension

6. Fine Focus Guiding Adapter and 1.25" Eyepiece Holder

7. Rotate Lock Ring

8. Hex Key

1. Getting Started

The Deluxe Off-Axis Guider comes
with all of its parts already attached;
however, you should remove the
parts first because you may not have
to use all of them to guide with your
particular telescope, camera, and
autoguider. Please take a moment
to familiarize yourself with the parts
(Figure 1a and 1b).

The Deluxe Off-Axis Guider accom­modates nearly any imaging cam­era and autoguider. We recommend
using a compact autoguider, such
as the StarShoot AutoGuider; how­ever many other autoguider cameras
with a 1.25" nosepiece or female
T-threads are also appropriate. You
can also use any 1.25" eyepiece
to help visually locate a guide star
before attaching the autoguider.
Manually guiding with a 1.25" reticle
eyepiece is possible too.

Prism tilt adjustment screw

Course focus
height adjustment
lock thumbscrews

Pick-off prism

T-threads

Setting the Correct
Imaging Camera and

Radial adjustment
lock thumbscrew

Autoguider Spacing

The imaging camera and autoguider
must come to the same focus point
to successfully operate the Deluxe
Off-Axis Guider. The imaging chip in
your CCD or DSLR camera and the
detector in your autoguider must be equidistant to the focal plane of your tele­scope. Three extension pieces (30mm, 17mm, and 7mm) are included to allow
you to achieve focus with both your imaging camera and autoguider when
using the Deluxe Off-Axis Guider.

If you are imaging with the StarShoot AutoGuider and the StarShoot Pro,
StarShoot Pro V2.0 or a Canon or Nikon DSLR, please refer to Figures 2a-2c
for the suggested Deluxe Off-Axis Guider configuration.

For any other imaging setup, you must determine the correct spacing configu­ration to allow your autoguider and imaging camera to reach focus. Keep in
mind that the farther away the imaging camera’s chip is from the Deluxe Off­Axis Guider, the farther away the autoguider detector must also be.

Figure 1b. The main body of the Deluxe

Off-Axis Guider contains the guiding end
which enables guide star acquisition and
focus.