Telescopes > Omegon > Horizon CR > Omegon Telescope CR AC 70/700

Product no.: 87239

Telescope CR AC 70/700

Name: Omegon Telescope CR AC 70/700
Brand: Omegon

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Product description Specifications Recommended accessories Customer reviews (0) Product safety

Product description

Specifications

Optics

A telescope tube is referred to as an optic because it contains the components necessary to collect and concentrate light.

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Type

There are basically two different types of telescope. A distinction is made between refractor (lens) and reflector (mirror) telescopes.

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Refractor

Type of build

Describes the exact structure of the telescope thereby further subdividing the different types of telescope.

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Achromat

An achromatic is a refracting telescope (refractor), which consists of two lenses. It is the classic refractor design.

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Aperture (mm)

Aperture

The aperture indicates the diameter of the objective lens or the mirror.

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Focal length (mm)

Focal length

This is the distance between the objective lens or mirror and the focal point.

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700

Aperture ratio (f/)

Aperture ratio

Is the ratio of the aperture to the focal length of a telescope.

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Resolving capacity

The ability of the optic to discern the fine detail of objects that are close together.

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1,64

Limit value (mag)

Limit value

Describes the brightness of a star or point-shaped object, which can still just be distinguished by the telescope. The naked eye, for example, can make out stars with a magnitude of up to 6.

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Light gathering capacity

Light-gathering capacity of the telescope compared to the eye.

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100

Max. useful magnification

The telescope’s magnification should not exceed this factor, because otherwise the image will appear weak and dark.

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140

Tube weight (kg)

Tube weight

The weight of the tube is critical for the correct choice of mount.

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Tube material

Most telescopes are made of steel, aluminium or carbon fibre.

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Steel

Tube construction

Full tube

Focuser

A focuser is used to hold an eyepiece. The image can be focussed using the focus wheels on the side.

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Type of build

There are basically two different construction types: the rack and pinion focuser and the Crayford focuser.

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Crayford

A Crayford focuser is a ball bearing guided friction drive and allows a very precise adjustment of the focus.

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Connection ( to eyepiece)

Focusers are available in 1.25" or 2" formats. Many 2" focusers also have a 1.25" adapter.

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1,25"

Mount

A mount is the foundation of an astronomical telescope. It usually consists of the mount head and an appropriate tripod.

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Mounting type

Are mainly differentiated between equatorial and altazimuth. A special type of altazimuth mount is the Dobsonian mount.

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no mount

Type of build

Describes the exact construction of the particular mount and thereby further subdivides the different types of mount.

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OTA

An OTA is an optical tube without a mount. It is short for optical tube assembly.

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GoTo control

Object positioning system, available in real GoTo and also PushTo versions.

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Tripod

The tripod is a part of the mount, it provides a stable stand and is usually adjustable in height.

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Type

without

Included accessories

Many telescopes came with simple accessories.

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Finder scope

A mini telescope used to locate a celestial object. There are optical finders and red dot finders.

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Red dot finder

A red LED dot is projected onto a disc.

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1.25'' eyepieces

Eyepieces are needed for observing. Depending on the focal length, you achieve a certain level of magnification.
The specification 1.25" refers to the diameter of the connector (1.25" = 31.8 millimetres).

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PL 25mm & 10mm 1,25"

Deviating optics

Erecting systems

A telescope always displays an object upside down. This law of optics can only be compensated for by an erecting system. Erecting lenses, diagonal mirrors or Amici prisms provide you with an upright image. Diagonal mirrors provide an upright but back-to-front image and Amici prisms provide an upright and right-sided image.

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1.25", 90°Amici prism

Prism rail

Vixen-Style

Barlow Lens

Extends the focal length and thus increases the magnification of a telescope. It is positioned between the telescope and eyepiece or camera.

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finder base

Vixen/Skywatcher Level

Miscellaneous

Smartphone adapter + Bluetooth shutter

General

Series

Horizon CR

Area of application

The area of application will give you a broad overview of the purposes for which the telescope is suited.

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Moon & Planets

yes (very good)

Nebulae & galaxies

Nature Observation

yes

Sun

Telescopes for safe solar observing.

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no ((only with suitable solar filters))

Recommended for

Recommended for...

The classification of the telescopes according to their suitability for beginners, advanced or observatories is useful as an initial orientation.

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Beginners

Telescopes that are supplied as a complete system and are easy to operate.

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yes

Advanced

Telescopes for experienced observers, but also for ambitious beginners.

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Observatories

Telescopes suitable for a fixed mount, whether that is in the garden or an observatory.

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Product safety

Manufacturer: NIMAX GmbH, Otto-Lilienthal-Str. 9, 86899 Landsberg am Lech, DE, www.nimax.de

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*All prices include VAT plus shipping costs.

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