Telescopes > Tecnosky > Tecnosky Apochromatic refractor AP 70/350 Quadruplet V2 OTA

$Tecnosky Apochromatic refractor AP 70/350 Quadruplet V2 OTA$ $Tecnosky Apochromatic refractor AP 70/350 Quadruplet V2 OTA$ $Tecnosky Apochromatic refractor AP 70/350 Quadruplet V2 OTA$ $Tecnosky Apochromatic refractor AP 70/350 Quadruplet V2 OTA$

Product no.: 71075

Apochromatic refractor AP 70/350 Quadruplet V2 OTA

Name: Tecnosky Apochromatic refractor AP 70/350 Quadruplet V2 OTA
Brand: Tecnosky
Price: 1350 USD

$ 1,350.00 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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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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350

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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1,97

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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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 material

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

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Aluminium

Tube weight (kg)

Tube weight

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

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3,9

tube diameter (mm)

Stray light baffles in the OTA

yes

Tube construction

Full tube

lens design

Quadruplet

Coating

FMC

FMC stands for fully multi-coated.

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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

Gear reduction

1:10 fine focusing

Rotating

yes

Connecting threaded socket (camera-side)

M48x0,75

Backfocus (mm)

Backfocus

The position of the focus, measured from the plug connection, with the eyepiece fully retracted.

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Ring clamp

yes

Load capacity (kg)

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

GoTo control

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

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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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Included accessories

Many telescopes came with simple accessories.

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Eyepiece adaptor

1,25" & 2"

Prism rail

Vixen-Style

Tube clamps

yes

Dew Shield

yes

Transport cases

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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Finder scope

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

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without

Carrying handle

yes

finder base

Vixen/Skywatcher Level

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)

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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not recommended

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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$Tecnosky Apochromatic refractor AP 70/350 Quadruplet V2 OTA$

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