Astronomy > Telescopes > Tecnosky > Tecnosky Cassegrain 150 OTA

Product no.: 76543

Cassegrain 150 OTA

Name: Tecnosky Cassegrain 150 OTA
Brand: Tecnosky
Price: 570 USD

$ 570.00 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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Reflector

Type of build

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

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Cassegrain

This telescope consists of a parabolic primary mirror with a central hole and a hyperbolic secondary mirror. In this way the construction can be kept as short as possible.

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Aperture (mm)

Aperture

The aperture indicates the diameter of the objective lens or the mirror.

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154

Focal length (mm)

Focal length

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

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1848

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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0,91

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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14,1

Light gathering capacity

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

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472

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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300

Tube weight (kg)

Tube weight

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

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5,4

Tube length (mm)

Tube length

Including eyepiece, but excluding dew cap.

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540

tube diameter (mm)

191

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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Crayford

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

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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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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

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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GoTo control

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

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General

Colour

black

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 (very good)

Nebulae & galaxies

yes

Nature Observation

yes

Astrophotography

yes

Sun

Telescopes for safe solar observing.

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no (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

Observatories

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

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*All prices include VAT plus shipping costs.

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