How to use Fieldscopes / Nomenclature

How to Use Fieldscopes

Once you know how to use a Fieldscope properly, you can view distant objects closely and clearly. Understanding a few simple operational procedures will ensure your enjoyment.

Nomenclature of Fieldscopes

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How to use Fieldscopes

(1) Mounting an eyepiece onto a Fieldscope body

  • Bayonet mount type
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    • Mounting
    • Removing

    Insert the eyepiece into the Fieldscope body aligning the indexes of both sides. Screw in counterclockwise until you hear a click. To remove, turn the eyepiece clockwise while pushing the eyepiece release lever.

  • Screw-in type
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    • Mounting
    • Removing

    Screw the eyepiece into the Fieldscope body clockwise to mount. To remove, turn counterclockwise.

(2) Attaching a Fieldscope to a tripod

When attaching to a tripod, use the tripod mount screw holes located on the back of the tripod mount.

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(3) Sliding the hood (except Fieldscope ED50 / ED50-A)

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Slide the hood with the objective lens cap open. When closing, close the hood first, then close the objective lens cap.

(4) Positioning the objective lens toward a subject

Find the target subject with your eyes, then position the center of the Fieldscope toward it. Use a large tree or a unique branch as landmarks.
If your Fieldscope has a line of aim, align the subject to an extension of this line. This helps you to capture your subject easily.

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(5) Focusing

Rotate the focusing ring of the Fieldscope body while looking through the eyepiece with one eye.
Viewing distant subjects: Rotate the focusing ring clockwise.
Viewing near subjects: Rotate the focusing ring counterclockwise.

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How to use a zoom type eyepiece

  • Mounting

    Both bayonet and screw-in type zoom eyepieces have the same mounting method as other bayonet and screw-in type eyepieces.

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  • How to use

    Rotating the zoom ring adjusts the magnification.
    For higher magnification: Turn clockwise.
    For lower magnification: Turn counterclockwise.

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How to use the clamp (located only on angled type Fieldscopes, except ED50 A)

The clamp can tilt the eyepiece part from right to left and fix it at a click position.

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