Telescopes > Explore Scientific > Explore Scientific Telescope AC 152/988 AR OTA

Product no.: 49863

Telescope AC 152/988 AR OTA

Name: Explore Scientific Telescope AC 152/988 AR OTA
Brand: Explore Scientific
Price: 860 USD

$ 860.00 incl. VAT, plus shipping costs

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Product description Specifications Recommended accessories Customer reviews (0)

Product description

It not only matters which telescope you buy but also where you buy it. Our additional services:

We are a leading telescope dealer and know the devices we sell. Our customer service team will gladly help you after your purchase if you have problems with assembly or operation.
We provide a copy of the 80-page Telescope ABC beginners handbook with every telescope.
We also provide an edition of the exciting astronomy magazine, “Sterne und Weltraum” with each telescope.

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

Type of build

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

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Achromat

An achromatic is a refracting telescope (refractor), which consists of two lenses. It is the classic refractor design.

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Aperture (mm)

Aperture

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

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152

Focal length (mm)

Focal length

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

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988

Aperture ratio (f/)

Aperture ratio

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

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6,5

Resolving capacity

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

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0,76

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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12,7

Light gathering capacity

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

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470

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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304

Tube weight (kg)

Tube weight

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

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10,7

Coating

EMD

Tube material

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

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Aluminium

Tube length (mm)

Tube length

Including eyepiece, but excluding dew cap.

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1042

tube diameter (mm)

158

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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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 movement

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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Free aperture (mm)

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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Included accessories

Many telescopes came with simple accessories.

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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

Finder scope

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

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8x50

Dew Shield

yes

Eyepiece adaptor

1,25" - 2"

Tube clamps

yes

Prism rail

Vixen-Style

Carrying handle

yes

Transport cases

General

shipping weight (kg)

Shipping weight

The weight of the telescope together with accessories and packaging.

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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

yes

Moon & Planets

yes

Nature Observation

Nebulae & galaxies

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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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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yes

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