Telescopes > TeleVue Apochromatischer Refraktor AP 76/480 Tele Vue-76 ivory OTA

TeleVue

Product no.: 23905

Apochromatischer Refraktor AP 76/480 Tele Vue-76 ivory OTA

Name: TeleVue Apochromatischer Refraktor AP 76/480 Tele Vue-76 ivory OTA
Brand: TeleVue
Price: 2493.99 USD

~~$ 3,237.48~~ Now only:

$ 2,493.99 incl. VAT plus shipping costs

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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

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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480

Aperture ratio (f/)

Aperture ratio

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

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6,3

Resolving capacity

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

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1,51

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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11,2

Light gathering capacity

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

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120

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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152

Tube weight (kg)

Tube weight

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

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2,3

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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Gear reduction

1:10 fine focusing

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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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 20mm

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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2", 90° star diagonal

Miscellaneous

Carrying bag

Carry case

yes

Eyepiece adaptor

1,25" & 2"

Dew Shield

yes

General

Variant name

elfenbein (ivory)

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

Nebulae & galaxies

not recommended

Nature Observation

yes

Astrophotography

yes

Sun

Telescopes for safe solar observing.

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not recommended (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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not recommended

Advanced

Telescopes for experienced observers, but also for ambitious beginners.

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yes

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Product safety

Manufacturer: Tele Vue Optics, Inc., 32 Elkay Dr., NY 10918 Chester, US, www.televue.com

Responsible person: NIMAX GmbH, Otto-Lilienthal-Str. 9, 86899 Landsberg am Lech, DE, [email protected]

Product safety

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Includes

Transport bag

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