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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15,3

Light gathering capacity

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

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5270

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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1016

Tube weight (kg)

Tube weight

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

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Tube length (mm)

Tube length

Including eyepiece, but excluding dew cap.

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1194

Tube material

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

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Carbon

Carbon is especially light and stable, but is also more expensive than metal

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Tube construction

Truss Tube

Truss tube

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

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Fully Corrected Field (mm)

Corrected Field

The optics’ field is illuminated without errors.

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Reflector

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

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Primary mirror - Diameter (mm)

508

Secondary mirror obstruction

The shadow effect of the telescope optics due to the secondary mirror, because this lies in the optical path.

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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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yes

Secondary Mirror Heating

Secondary mirror heating

This heater prevents condensation on a reflecting telescope’s secondary mirror.

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yes

Primary mirror - Material

Quartz

Secondary mirror material

Quartz

Main mirror´s construction

Main mirror construction

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

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elliptical

secondary mirror design

spherical

reflectivity

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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without

Backfocus (mm)

Backfocus

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

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147

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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Corrector

Optical aid to correct aberrations.

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integrated

Prism rail

Carrying handle

yes

Tube clamps

yes

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

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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Observatories

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

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yes

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Downloads

Data sheet (EN)

Booklet (EN)

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Astronomy > Filters (4)

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*All prices include VAT plus shipping costs.

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