Nipon Optics LV780-26-78x78

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NIPON 780X78 (LV780-26-78x78) Refra-Reflector Compact Telescope

User Instruction

1. Overview

This scope is featured with refra-reflect objective lens, which makes the instrument shorter, lighter,

non-chromatic aberration and more powerful. It combines spotting scope and telescope two in one.

The scope adopts the Maksutov-Cassegrain optical system. The objective lens has a focal length (F)

of 780mm, and its diameter (D) is 78mm. The scope has a standard 1.25” eyepiece holder that can

take a wide range of eyepieces with 1.25” (31.75mm) fitting diameter to achieve different

magnification levels and field of view. These features, plus its compact size and lightweight, make

this scope suitable for long distance observation, sightseeing, bird watching, and hunting during the

day, as well as observing stars and the moon at night.

2. Main Technical Specification

Objective

Focal Length

Objective Lens

Diameter

Eyepiece Focal

Length

Magnification

Field of View

(Degree)

780mm 78mm

20mm

39x

(with the 20mm eyepiece provided)

1.25

Eye relief (mm) Resolution Focusing Range (m)

≤2.8＂

∞ ~ 6.5

Note: specification values vary depending on different eyepieces to be used.

3. Description

Note: The image is for illustration purpose only. Item shapes and colour may not be the same as in the picture.

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This document describes the NIPON 780X78 (LV780-26-78x78) Refra-Reflector Compact Telescope, a versatile optical instrument designed for both terrestrial and astronomical observation.

Function Description

The NIPON 780X78 is a refra-reflector compact telescope that integrates the functionalities of a spotting scope and a telescope into a single device. Its design incorporates a refra-reflect objective lens, which contributes to a shorter and lighter instrument while minimizing chromatic aberration and enhancing optical power. The scope utilizes a Maksutov-Cassegrain optical system.

This dual-purpose design makes the telescope suitable for a wide range of activities. During the day, it can be used for long-distance observation, sightseeing, bird watching, and hunting. At night, it excels at observing celestial bodies such as stars and the moon. The standard 1.25" eyepiece holder allows for the use of various eyepieces with a 31.75mm fitting diameter, enabling users to achieve different magnification levels and fields of view.

Important Technical Specifications

The NIPON 780X78 telescope features the following key specifications:

Objective Focal Length (F): 780mm
Objective Lens Diameter (D): 78mm
Optical System: Maksutov-Cassegrain
Eyepiece Holder: Standard 1.25" (31.75mm fitting diameter)

When used with the provided 20mm eyepiece, the specifications are:

Eyepiece Focal Length: 20mm
Magnification: 39x
Field of View: 1.25 degrees
Resolution: ≤2.8"
Eye Relief: 18mm
Focusing Range: 6.5m to 8m

It is important to note that specification values may vary depending on the specific eyepieces used.

The packing list for the device includes:

The scope itself
A table tripod
A 20mm eyepiece
A lens cleaning cloth
A user instruction manual

Usage Features

The NIPON 780X78 is designed for ease of use, particularly when mounted on a tripod for stability.

Setup:

Tripod Connection: Stabilize the scope by connecting it to a tripod. The tripod-fitting host on the scope has a screw hole for this purpose. Ensure the connecting screw is tightened securely. It is strongly advised not to attempt observation while holding the scope by hand, as high magnification makes hand movements significantly disruptive to viewing.
Tripod Adjustment: If using a larger tripod, adjust its height to a comfortable level for observation. Always ensure the tripod legs are locked and steady to prevent accidental movement.
Directional Adjustment: Turn the tripod host to adjust the scope's azimuth (horizontal) and vertical direction as needed. Exercise care not to apply excessive force when turning the tripod direction adjustment screw.
Eyepiece Insertion: Insert the desired eyepiece into the eyepiece holder of the scope.

Observation:

Aiming: Aim the telescope at a distant object. For optimal focusing, it is recommended to start with an object at least a few hundred yards away, as further distances generally provide better initial focusing.
Focusing: Adjust the focusing wheel by turning it clockwise or anticlockwise until the image appears clear and sharp.
Eye Position: Keep your eye as close to the eyepiece as possible. If you wear eyeglasses, fold down the rubber eyecup to ensure proper eye relief and a full field of view.

Safety Warning: It is crucial never to use this instrument to directly observe the sun or any other very bright, light-emitting sources. Doing so can cause severe and permanent damage to your eyes.

Maintenance Features

Proper maintenance ensures the longevity and optimal performance of the NIPON 780X78 telescope.

Handling:

As a precise and delicate optical instrument, all adjustments to the system should be made with smooth movements and equal, gentle power.
Protect the system from any form of shock or vibration, which could misalign optical components or cause damage.

Cleaning:

When necessary, use a soft brush to remove dust and debris from the scope and lenses.
Follow up with the provided lens cleaning cloth to gently clean the lenses. Avoid using abrasive materials or harsh chemicals that could scratch or damage the optical coatings.

Environmental Protection:

To prevent dampness from causing fogging on the lenses, especially after use in cold and damp environments, store the scope in a higher temperature place for up to two hours. This allows any accumulated moisture to dissipate.

By adhering to these usage and maintenance guidelines, users can ensure a reliable and enjoyable experience with their NIPON 780X78 Refra-Reflector Compact Telescope.