Telescopes > Stargate > Skywatcher Dobson Teleskop N 458/1900 StarGate-450P DOB

Product no.: 45921

Dobson Teleskop N 458/1900 StarGate-450P DOB

Name: Skywatcher Dobson Teleskop N 458/1900 StarGate-450P DOB
Brand: Skywatcher
Price: 3964.38 USD

$ 3,964.38 incl. VAT plus shipping costs

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Product description Specifications Recommended accessories Customer reviews (0) Product safety

Product description

More about the series Stargate...

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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458

Focal length (mm)

Focal length

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

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1900

Aperture ratio (f/)

Aperture ratio

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

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4,1

Resolving capacity

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

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0,25

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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15,1

Light gathering capacity

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

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4280

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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916

Tube construction

Truss Tube

Truss tube

In contrast to the solid tube, here the optical tube is constructed of rods.

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Coating

SiO2

Reflector

Special characteristics which only reflectors possess, can be found under this heading.

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Secondary mirror diameter (mm)

120

Main mirror´s construction

Main mirror construction

Here, the construction type means the geometric shape of the primary mirror.

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parabolic

Ventilation for central mirror

Ventilation for primary mirror

Fan for a quicker alignment of the mirror temperature to the ambient temperature.

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Primary mirror - Diameter (mm)

458

Adjustable

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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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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Type of build

There are basically two different construction types: the rack and pinion focuser and the Crayford focuser.

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Crayford

A Crayford focuser is a ball bearing guided friction drive and allows a very precise adjustment of the focus.

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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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Dobson

Mounting type

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

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Dobson

Dobsonian

Large and high-quality optic with an inexpensive rockerbox mount.

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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

Rockerbox

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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10mm

2'' eyepieces

Eyepieces are needed for observing. You achieve a certain level of magnification depending on the focal length. The specification 2" refers to the diameter of the connector (2" = 50.8 millimetres).

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28mm

Finder scope

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

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9x50

Miscellaneous

Adjustment eyepiece

stray light protection

yes

General

Total weight (kg)

Series

Stargate

Dobsonian with a large mirror diameter in a lightweight construction.

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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

not recommended

Moon & Planets

yes

Nature Observation

Nebulae & galaxies

yes

Sun

Telescopes for safe solar observing.

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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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Product safety

Manufacturer: Pacific Telescope Corp, 160-11880 Hammersmith Way, V7A 5C8 Richmond BC, CA, www.skywatcher.com

Responsible person: Optical Vision Limited, Duracher Straße 11, 87437 Kempten, DE, [email protected]

Product safety

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Can be completely dismantled for easy transport

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