Telescopes > Solar telescopes > SolarMax III > Coronado Sonnenteleskop ST 90/800 SolarMax III BF15 <0.7Å OTA

Product no.: 59501

Sonnenteleskop ST 90/800 SolarMax III BF15 <0.7Å OTA

Name: Coronado Sonnenteleskop ST 90/800 SolarMax III BF15 <0.7Å OTA
Brand: Coronado
Price: 7156.96 USD

$ 7,156.96 incl. VAT, plus shipping costs

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Product description Specifications Downloads Recommended accessories Customer reviews (0)

Product description

More about the series SolarMax III...

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 of build

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

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Solar H-Alpha

With H-alpha telescopes you can observe prominences, flares and filaments on the Sun. Additionally, these telescopes have an etalon filter and a blocking filter.

Caution: you can also buy versions without the blocking filter. You should never use these without a blocking filter.

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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

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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800

Aperture ratio (f/)

Aperture ratio

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

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8,9

Resolving capacity

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

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1,53

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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11,6

Light gathering capacity

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

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170

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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180

Tube weight (kg)

Tube weight

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

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7,9

Bandwidth

Specifies the width of the area through which light of certain wavelengths is allowed to pass. Light is blocked outside of this range.

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< 0,7

etalon filters (mm)

Blocking Filter (mm)

Blocking Filter

The deflection optics with the eyepiece receiver also accommodate the blocking filter.

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Double Stack

Many solar telescopes are also available with a Double Stack.

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Filter systems

H-alpha

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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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

Free aperture (mm)

Gear reduction

1:7 fine focusing

Connecting threaded socket (camera-side)

Rotating

yes

Adjustment range (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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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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Prism rail

Vixen-Style

Tube clamps

yes

Finder scope

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

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Solar finder

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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25mm, 18mm, 12mm

Transport cases

yes

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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Blockfilter

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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General

Series

SolarMax III

Solarmax III

SolarMax III solar telescopes are the latest H-alpha telescopes from Coronado.

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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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Sun

Telescopes for safe solar observing.

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yes (H-alpha)

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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Downloads

Instruction Manual (EN)

Instruction Manual (DE)

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Telescope accessories > Transport & storage (5)

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Omegon aluminium case, large

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Omegon Carry case Bumbag for eyepieces

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Omegon Transport cases eyepiece case

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Omegon Carry case transport bag for accessories

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Telescope accessories > Other (2)

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Media (1)

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Maintenance & Cleaning (4)

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Omegon cleaning system

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Omegon microfibre cleaning cloth 20cm x 20cm

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*All prices include VAT plus shipping costs.

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