Telescopes > Tecnosky Apochromatischer Refraktor AP 125/975 ED OTA

Product no.: 67623

Apochromatischer Refraktor AP 125/975 ED OTA

Name: Tecnosky Apochromatischer Refraktor AP 125/975 ED OTA
Brand: Tecnosky
Price: 1606.03 USD

$ 1,606.03 incl. VAT, plus shipping costs

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Product description Specifications Recommended accessories Customer reviews (0)

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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Apochromat

Refractors with little chromatic aberration.

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lens design

Doublet

A refractor with two lenses. Compared to an achromat, it displays significantly less chromatic aberration and more contrast.

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Aperture (mm)

Aperture

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

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125

Focal length (mm)

Focal length

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

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975

Aperture ratio (f/)

Aperture ratio

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

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7,8

Resolving capacity

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

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1,10

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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12,3

Light gathering capacity

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

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320

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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250

Tube weight (kg)

Tube weight

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

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7,6

Tube material

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

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Aluminium

Coating

FMC

FMC stands for fully multi-coated.

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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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Gear rack

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)

Gear reduction

1:10 Fine movement

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

GoTo control

with hand paddle

yes

Included accessories

Many telescopes came with simple accessories.

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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

Vixen-Style

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 (very good)

Moon & Planets

yes (very good)

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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yes

Observatories

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

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FMC, Ultra Wind Band Coating

Focuser

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