Orion 5521 Parts List, Getting Started, Setting the Correct Imaging Camera Autoguider Spacing

Radial adjustment lock thumbscrew

Figure 1b. The main body of the Deluxe Off-Axis Guider contains the guiding end which enables guide star acquisition and focus.

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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 Off- Axis Guider is especially useful for Schmidt-Cassegrain telescopes or other systems that are prone to optical flex- ure 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
			Prism tilt adjustment screw
The Deluxe Off-Axis Guider comes
			Course focus
with all of its parts already attached;
			height adjustment		T-threads
however, you should remove the
			lock thumbscrews
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 accom-
modates nearly any imaging cam-
era and autoguider. We recommend
using a compact autoguider, such
as the StarShoot AutoGuider; how-
ever many other autoguider cameras
with a	1.25" nosepiece	or female		Pick-off prism
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.

Setting the Correct

Imaging Camera and

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 tele- scope. 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 configu- ration 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 Off- Axis Guider, the farther away the autoguider detector must also be.

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