Orion 9536 Focus knob, Eyepiece, Focusing, Installing the EZ Finder StarSeeker, StarSeeker130

Eyepiece	Eyepiece	EZ Finder II
	Adapter
	Thumbscrew

Focus knob

Star diagonal Eyepiece adapter

Figure 6. Visual accessories for the StarSeeker 80mm

no longer obstructs the inner diameter of the focus barrel. Remove the protective dust cap from the focuser barrel.

2.Slide the chrome portion of the star diagonal into the eye- piece adapter.

3.Tighten the thumbscrew on the eyepiece adapter to hold the star diagonal in place.

If you wish to change the orientation of the star diagonal, loosen the thumbscrew on the eyepiece adapter until the star diagonal rotates freely. Failure to do so will result in unthread- ing the chrome barrel from the diagonal housing. Rotate the diagonal to the desired position and tighten the thumbscrew.

The Eyepiece

The eyepiece, or ocular, is the optical element that magnifies the image focused by the telescope. The eyepiece fits either directly into the focuser (114mm and 130mm models) or into the star diagonal (80mm model). To install the eyepiece:

For StarSeeker 80mm model:

1.Loosen the thumbscrew on the star diagonal so it does not obstruct the inner diameter of the eyepiece end of the diagonal. Remove the protective dust cap from the star diagonal’s barrel.

2.Slide the chrome barrel of the low power 25mm eyepiece into the star diagonal.

3.Tighten the thumbscrew to hold the eyepiece in place.

To remove the eyepiece, loosen the thumbscrew on the star diagonal and slide the eyepiece out.

For StarSeeker 114mm and 130mm models:

1.Loosen the thumb screw on the eyepiece adapter at the end of the focuser barrel and remove the protective dust cap from the focuser barrel.

2.Slide the chrome barrel of the low power 25mm eyepiece into the eyepiece adapter.

3.Tighten the thumbscrew to hold the eyepiece in place.

EZ Finder II Eyepiece

Focus knob

Eyepiece

Adapter

Thumbscrew

Figure 7. Visual accessories for the StarSeeker 114mm & 130mm

To remove the eyepiece, loosen the thumbscrew on the eye- piece adapter and slide the eyepiece out.

Eyepieces are commonly referred to by their focal length and barrel diameter. The focal length of each eyepiece is typically printed on the eyepiece body. For example this telescope ships with two 1.25" diameter eyepieces; a 25mm and a 10mm. The longer the focal length (i.e., the larger the number), the lower the eyepiece power or magnification; and the shorter the focal length (i.e., the smaller the number), the higher the magnifi- cation. Generally, you will use low-to-moderate power when viewing. For more information on how to determine power, see the section on “Calculating Magnification.”

Barrel diameter is the diameter of the barrel that slides into the star diagonal or focuser. The StarSeeker uses eyepieces with a standard 1.25" barrel diameter.

Focusing

To focus your telescope, simply turn either of the focus knobs at the eyepiece end of the optical tube (see Figures 6 and 7). Turn the focus knob until the image is sharp. Extending the focus tube brings objects closer to you in focus. Conversely, for distant objects draw the focus tube inward.

Installing the EZ Finder II

StarSeeker 80

Slide the base of the EZ Finder II (2) bracket into the dovetail holder that is molded into the focuser body on the optical tube

(3). The EZ Finder II should be oriented so that it appears as in Figure 1. Tighten the thumbscrew on the dovetail holder to secure the EZ Finder II in place.

StarSeeker 114

Remove the two metal thumbscrews from the optical tube (Figure 3). Place the bracket of the EZ Finder II (2) on the tube so that the holes in the bracket slide over the two thread- ed posts on the tube. The EZ Finder should be oriented so that it appears as in Figure 1. Thread the thumbscrews back onto the posts to secure the EZ Finder II in place.

StarSeeker130

Slide the base of the EZ Finder II (2) bracket into the dovetail holder (Figure 4) that is pre-installed on the optical tube (3). The EZ Finder II should be oriented so that it appears as in

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