Astronomy > Telescopes > Seben > Other > Seben 76/900 EQ2 Reflektor Teleskop Spiegelteleskop Fernrohr Astronomie

Product no.: 59855

76/900 EQ2 Reflektor Teleskop Spiegelteleskop Fernrohr Astronomie

Name: Seben 76/900 EQ2 Reflektor Teleskop Spiegelteleskop Fernrohr Astronomie
Brand: Seben
Price: 139.64 USD

$ 139.64 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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Reflector

Type of build

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

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Newton

Reflector telescope with a secondary mirror at the beginning of the tube which redirects light to one side.

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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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900

Aperture ratio (f/)

Aperture ratio

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

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11,8

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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150

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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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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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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Type of build

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

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EQ-2

Mounting type

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

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Equatorial

Is a type of mount set-up, whereby one axis is aligned parallel to the axis of the Earth.

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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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Material

Aluminium

Type

Tripod

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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H 20mm, H 12,5mm, H 6mm, SR 4mm

Finder scope

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

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5x24

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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Erecting lens

1,5x

Miscellaneous

Moon filter

General

Total weight (kg)

Series

Other

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

Nature Observation

not recommended

Astrophotography

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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yes

Advanced

Telescopes for experienced observers, but also for ambitious beginners.

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not recommended

Observatories

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

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