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Stefan Taube

Stefan Taube

Posts composed by Stefan Taube

The NexStar 130 SLT telescope from Celestron now on special offer!

January 13 2020, Stefan Taube

NexStar SLT telescopes from Celestron are easy-to-use integrated systems that, with their computer controls, reveal the highlights of the night. So even beginners can easily find their way around the night sky.

We are currently offering the NexStar 130 SLT model at a special price: right now it’s yours for just EUR 499. You save EUR 130 compared to the manufacturer’s recommended retail price!

Celestron NexStar 130 SLT

Celestron NexStar 130 SLT

The NexStar 130 SLT is the largest model in this series. With an aperture of 130 millimetres, it collects the most light and offers the highest resolution. Not only are the Moon and planets accessible to you, but also the other “stars” in the night sky, such as the Orion Nebula, the Andromeda Galaxy or the Hercules cluster. But don’t neglect double stars like Albireo in the Swan! The sight of such pairs of stars is especially appealing when the two elements display a beautiful colour contrast.

The basis of the NexStar SLT telescopes is a single-arm azimuth mount with motorised tracking. This design ensures a low weight and quick set-up. The motors can be powered either using the integrated battery or with an optional mains adapter.

The NexStar computer control shows you the entire starry sky. The necessary alignment of the control is very simple with Celestron telescopes. To start your observing you simply need to point at any three stars and the computer already knows where all the other stars and planets are located.

Take advantage of the special offer on the NexStar 130 SLT now! It is only valid until 29.2.2020!

Celestron NexStar 130 SLT Komplett

The NexStar 130 SLT with tripod

By the way: with the NexYZ adapter and this telescope you can easily take beautiful pictures of the Moon and the bright planets with your smartphone!

The SkyGuider Pro camera mount from iOptron is now available with an electronic polar finder

January 8 2020, Stefan Taube

The SkyGuider Pro is a very light mount on which you can set up a camera with interchangeable lenses or a small telescope. This approach allows longer exposure times and so you can create fascinating wide-angle shots of the night sky.

iOptron Montierung SkyGuider Pro iPolar Set

iOptron Mount SkyGuider Pro iPolar Set

The SkyGuider Pro is now also available as a set together with the iPolar electronic polar finder, which has been built into the mount. With this accessory, you can easily and very precisely polar-align your mount.

The electronic finder has a built-in camera. This shows the position of the northern celestial pole and the location that the polar axis of the mount is pointing at, on your laptop. Simply bring the two points together by turning the adjustment screws for the azimuth and altitude axes of the mount – and you’re done!

SkyGuider Pro mit iPolar

SkyGuider Pro with iPolar

The location of the celestial north pole differs somewhat from the location of the Pole Star. The electronics calculate the exact position using the date and time. Thanks to the sensitivity of the camera and the large field of view, this so-called polar alignment is successful even when the mount has been only roughly positioned. This also works in the southern hemisphere and even takes into account atmospheric refraction at low latitudes!

If want to do without iPolar, you can of course still purchase the SkyGuider Pro mount without the electronic polar finder here.

New: TeleVue Apollo 11 Eyepiece – Limited Edition!

December 17 2019, Stefan Taube

The 50th anniversary of the Moon landing: to celebrate the Apollo anniversary TeleVue is offering the special Apollo 11 eyepiece. Only 300 of these eyepieces have been produced. So order yours now!

TeleVue Okular Apollo 11mm 1,25"

TeleVue Eyepiece Apollo 11mm 1.25″

For the young engineer Al Nagler, NASA’s Apollo program was the beginning of a glittering career as an optical designer. As an employee of the Farrand Optical Company, he had the task of developing an optical system for the Lunar Module simulator. In this simulator, Neil Armstrong and his colleagues rehearsed the approach and landing on the lunar surface.

As part of this activity, Al Nagler developed the design of the Nagler eyepiece which is still popular to this day. After the simulator had been developed, Al Nagler founded the company TeleVue, which still develops and manufactures the best eyepieces on the market. To mark the fiftieth anniversary of the Moon landing, TeleVue is now offering this special limited edition eyepiece!

TeleVue-Gedenkmuenze

Also included: Apollo 11 commemorative coin

The eyepiece is delivered in a very elegant gift box, with a personal message from Al Nagler and an Apollo 11 commemorative coin. Like the eyepiece, the coin is limited and carries a serial number (numbers 004 to 303).

Nagler_Astroshop

Al Nagler and Astroshop employees at the ATT astronomy fair in 2012

We at Astroshop are especially pleased to be able to present this special eyepiece to you, since we have a long-standing friendship with TeleVue and Al Nagler!

New Starquest Telescope from Skywatcher

October 30 2019, Stefan Taube

Skywatcher’s new Starquest telescopes combine small optics with a lightweight equatorial mount in a new design. A lightweight aluminium tripod with a storage shelf is also included, the perfect telescope for easy transportation and a quick view of the sky.

Skywatcher Newton 130/650 Starquest EQ

Skywatcher Newton 130/650 Starquest EQ

The high-quality Starquest mount contains a worm gear with 122 teeth on each axis. This ensures high stability and sensitive manual tracking with the easy-to-use flexible shafts – even beginners can easily cope.

The correct telescope to choose from depends on your preferred application:

  • The refractor AC 102/500 shows large sections of the sky. Large objects such as nebulae, open star clusters or comets can be observed with it.
  • The Maksutov MC 102/1300 is particularly compact. Despite its small size, this telescope has a very long focal length. It allows high levels of magnification, and is a real specialist for the Moon and planets – but also planetary nebulae and double stars can easily be observed with the Maksutov. With this selection of potential objects and the rear-facing lens position, the Maksutov is ideal for the balcony observatory in light-polluted cities. Another advantage is the closed optical tube: the mirror cannot become contaminated.
  • The Newton 130/650 telescope is the best compromise. It has the widest aperture and therefore collects most light. Even faint nebulae can still be identified. The Newton telescope is also particularly inexpensive due to its design. However the relatively long tube has the greatest lever effect on the mount.

More information and all the models can be found here in Astroshop.

Special offer: Vixen binocular telescope BT-81S-A complete package!

October 9 2019, Stefan Taube

Binoculars are often underrated as instruments for astronomy. Yet the view of the night sky through large-aperture binoculars is a unique experience!

Binocular viewing supports our natural stereoscopic vision. It allows especially relaxed observing and offers a 3D effect that can only be achieved with a telescope by using a binocular viewer accessory.

Vixen BT 81S

Vixen BT-81S-A binocular telescope set

Compared to telescopes, binoculars have a larger field of view at lower levels of magnification. Therefore they are especially suited to observing star fields, open star clusters, dark nebulae and comets.

For many years Vixen, the Japanese manufacturer, has been offering an interesting range of astronomical binoculars with their BT series. Right now we are offering you the BT-81S-A as a complete package for a special price: you get the binoculars including a tripod, mount and eyepiece now for just EUR 1,699. You save EUR 200 compared to the manufacturer’s recommended price!

The BT-81S-A has two achromatic lenses with magnesium fluoride coatings. The colour-corrected fast lenses, with a focal ratio of f/6, combined with the special fork mount, allow an expansive visual stroll across the night sky which is truly addictive!

With an 81mm aperture, the BT-81S-A is among the smaller large-aperture binoculars. But in return it is easily portable, weighing 4 kilograms and being 480 millimetres long.

You can find more information and ordering options here in the Astroshop.

Celestron RASA Astrographs: Telescopes for Astrophotography

September 20 2019, Stefan Taube

The RASA range of telescopes were developed specifically and exclusively for astrophotography. They are very fast; with a focal length of f/2 they take pictures twenty times faster than a Schmidt-Cassegrain lens at f/10! Because of this a tracking control is not required, and generally fewer demands are placed on the mount!

The RASA 1100 model with a 279 millimetre aperture has already been on the market for some time, and Celestron is now also offering a smaller version, the RASA 800, with a 203 millimetre aperture.

Celestron Astrograph S 203/400 RASA 800

Celestron Astrograph S 203/400 RASA 800

This optical system is also within reach of smaller budgets with the RASA 800, particularly since it can be used with a smaller mount. The illustration above shows the RASA 800 with the AVX mount. This astrograph is optimised for astrophotography cameras with a 22 millimetre field diagonal. The larger RASA 1100 is the better choice for those who prefer to use a DLSR for their photography.

The abbreviation RASA stands for the developers’ names: Rowe-Ackermann-Schmidt-Astrograph. It is basically a normal, routinely-produced Celestron Schmidt-Cassegrain instrument; that is with a spherical primary mirror in front of which is a corrector plate invented by Bernhard Schmidt. Instead of using a secondary mirror to direct the light path towards the Cassegrain focus at the end of the telescope, the camera sensor is incorporated in the prime focus. A corrector assembly comprising four lenses made of especially high-quality glass ensures optimal illumination.

Die RASA-Optik von Celestron

The RASA telescope from Celestron

As the term astrograph implies, RASA telescopes are designed exclusively for photography. There is no option to use an eyepiece. But if you are an amateur astronomer who specialises in astrophotography, you will not see this as a disadvantage, instead you will quickly learn to appreciate the advantages of the RASA telescopes.

PlaneWave Instruments software for computer control of Celestron telescopes

June 26 2019, Stefan Taube

You can rely on PlaneWave Instruments’ professional CPWI software if you want to control your Celestron telescope via a laptop or PC.

This software is not only intuitive to use, but also lets you maximise the GoTo accuracy of your Celestron mount.

CPWI Telescope Control software is now compatible with all modern Celestron mounts, including:

 

You can download the software for free here on celestron.com!

 

Celestron CPWI

PlaneWave Instruments Telescope Control panel

 

Some special features of CPWI software include:

  • The built-in SkyViewer star chart is intuitive to use and allows you to easily navigate through the night sky by clicking and zooming.
  • Advanced PointXP lets you create a highly accurate model of the night sky which uses more than 100 reference points to enable highly accurate positioning and tracking.
  • Ideal for observatories: You can carry out alignment directly from the PC, save the alignment model and simply upload it again the next night you observe. Alignment can also be done entirely automatically using the optional StarSense module.
  • Extensive internal database. Access to the SIMBAD professional astronomy database possible via the Internet.
  • Worm screw periodic error compensation: PEC can be done from the PC via CPWI.

System requirements: Windows 7, 8 or 10 operating system, with USB 2.0 or 3.0 connection, 15MB hard disk space and 64MB RAM. Screen resolution of 1024×768 or higher is recommended.

New: Diamond Steeltrack focuser with Steeldrive from Baader

June 17 2019, Stefan Taube

Diamonds really are astronomers’ best friends – at least since the Baader Diamond Steeltrack focuser has been available. It uses real diamonds in its drive system!

In contrast to conventional Crayford or rack-and-pinion focusers, the Diamond Steeltrack’s micronized drive system guarantees entirely backlash-free operation, is completely non-slip and torsion-free – and has a vertical load capacity of 6 kilograms!

Okularauszug Diamond Steeltrack an einem Celestron EdgeHD

Diamond Steeltrack focuser on a Celestron EdgeHD telescope

There are Diamond Steeltrack focusers available for Schmidt-Cassegrain telescopes, Newtonian telescopes and refractors.

The Steeldrive II motorized focuser drive with hand-held controller is now available:

Baader Fokussiermotor Steeldrive II mit Steuerung

Baader Steeldrive II motorized focuser drive with control unit

The Steeldrive II motorized focuser drive permits automated focusing of a telescope via computer, as well as precise and vibration-free focusing using the buttons on the hand-held controller.

A good focuser considerably enhances observing pleasure and is essential for high-end astrophotography. The Steeltrack focuser is currently the best possible solution available!

 

Now available: the GreenLine roll-off roof observatory from DomeParts!

May 21 2019, Stefan Taube

We are pleased to offer the roll-off roof observatory GreenLine from DomeParts GmbH – now available at a great price. You can now realise your dream of having your own very own garden observatory. It’s also perfect for astronomy clubs.

The Greenline roll-off roof observatory is available in three sizes:

The larger size GreenLine Plus is perfect for astronomical organisations.

DomeParts GreenLine

A GreenLine observatory in the exhibition area of the astronomy fair AME.

The advantages of a roll-off roof observatory compared to a classic dome observatory are clear:

  • The observatory looks like a typical garden shed and so blends in perfectly in any domestic setting. The wooden GreenLine is not only well-designed, but looks great too.
  • The roof can be fully retracted giving you an unobstructed view of the sky in every direction.
  • The inside of the cabin adjusts quickly to the ambient temperature, eliminating turbulent air currents which can often arise with a dome opening.
DomeParts GreenLine Omegon

GreenLine observatory with an Omegon RC on an iOptron CEM60 mount.

The open roof of the roll-off roof observatory offers plenty of room to manoeuvre even for a large-aperture telescope. Here in the picture the GreenLine observatory is equipped with an Omegon RC Truss telescope on an iOptron CEM60 mount.

The delivery time for a GreenLine roll-off roof observatory is around one month. You can put the observatory together yourself or let our construction team build it for you.  Get in touch with us: We’re happy to give you advice and provide you with a quote.

iOptron mounts: A new addition to the CEM family

April 4 2019, Stefan Taube

CEM series mounts from iOptron are already widely used in the US and are becoming increasingly well known in Europe too. The CEM25P mount for portable astrophotography with Newtonian telescopes of up to 6 inches aperture and the CEM60 mount for use in observatories have proved particularly popular.

With their new CEM40 and CEM40-EC with encoders, iOptron now provides a middle range mount capable of carrying loads of up to 18 kilograms. The CEM40 is hence ideally suited for astrophotography with telescopes of up to 8 inches (200 millimetres) in aperture.

iOptron CEM40

The CEM40 is the latest addition to iOptron’s CEM series

The abbreviation CEM stands for centre-balance equatorial mount, i.e. for equatorial mounts which are supported at their centre of gravity. This design ensures an excellent relation between weight and carrying capacity. The CEM40 weighs only 7 kilograms and yet can carry OTAs up to 2.5 times heavier. The amazing carrying capacity of CEM mounts has been constantly reaffirmed by our customers – especially regarding the CEM25P.

The CEM40 comes equipped with an electronic pole finder, known as ‘iPolar’. A laptop is required to operate this however, so the CEM40 is particularly suitable for astrophotographers who already use a laptop for their camera. iPolar and built-in GPS provide easy and accurate alignment and GoTo computer control initialization.

The encoders installed in the CEM40-EC version ensure very high GoTo accuracy and allow worm gear permanent periodic error correction – a problem that all mounts suffer from. The CEM40-EC does away with the need for guiding with your astrophotography.

The CEM family now covers a wide range of load carrying capacities, offering a suitable model for every budget!

17.01.2020
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