Telescopes > Tecnosky > Goliath > Tecnosky Telescope AC 234/1800 Goliath OTA

Product no.: 65696

Telescope AC 234/1800 Goliath OTA

Name: Tecnosky Telescope AC 234/1800 Goliath OTA
Brand: Tecnosky
Price: 8000 USD

$ 8,000.00 incl. VAT, plus shipping costs

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Product description Specifications Recommended accessories Customer reviews (0)

Product description

It not only matters which telescope you buy but also where you buy it. Our additional services:

We are a leading telescope dealer and know the devices we sell. Our customer service team will gladly help you after your purchase if you have problems with assembly or operation.
We provide a copy of the 80-page Telescope ABC beginners handbook with every telescope.
We also provide an edition of the exciting astronomy magazine, “Sterne und Weltraum” with each telescope.

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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234

Focal length (mm)

Focal length

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

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1800

Aperture ratio (f/)

Aperture ratio

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

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7,7

Resolving capacity

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

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0,59

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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13,6

Light gathering capacity

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

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1120

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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468

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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Aluminium

Coating

multiple

Stray light baffles in the OTA

yes

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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Hybrid

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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Free aperture (mm)

Ring clamp

yes

Load capacity (kg)

Gear reduction

1:10 Fine movement

Adjustment range (mm)

Rotating

yes

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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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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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

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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Dew Shield

yes

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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Prism rail

Losmandy-Style

finder base

Vixen/Skywatcher Level

General

Series

Goliath

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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Astrophotography

yes

Moon & Planets

yes

Nature Observation

Nebulae & galaxies

yes

Sun

Telescopes for safe solar observing.

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no (Only with appropriate Sun filter)

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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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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yes

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*All prices include VAT plus shipping costs.

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Focuser

Example

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