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Stefan Taube

Stefan Taube

Posts composed by Stefan Taube

Higher contrast for comet hunters: C2 Swan Band filter

September 29 2023, Stefan Taube


German manufacturer, Baader, has produced a new filter for 511 and 514 nanometre spectral lines which is available to fit both available filter thread sizes:

These Swan Band emission lines, which are named after their discoverer, are produced by carbon. They make up the majority of a comet’s gas tail in the visible spectrum. The filter only allows light from these two carbon wavelengths to pass through and blocks the ever-present light pollution. Structures within a comet’s gas tail, therefore, become more pronounced even in good observing conditions.

At the same time, it blocks the 501 nanometre OIII spectral lines. This increases contrast and makes it easier to distinguish comets with gas tails from comets with dust tails.

Both C2 Swan Band filters belong to Baader’s new CMOS-optimised filters:

Pre-order now: Celestron’s new StarSense autoguider

September 28 2023, Stefan Taube

StarSense Autoguider

As early as spring, the manufacturer Celestron announced their new autoguider, which makes astrophotography using a Celestron mount much easier: the new StarSense autoguider.

Although not likely to arrive before January 2024, we are offering you the opportunity right here to pre-order one, as demand for this very useful accessory is very high. Secure yours now!

Key features of the StarSense autoguider:

  • Automatic alignment: Thanks to Celestron’s patented StarSense technology, the telescope orientates itself within the night sky – with absolutely no user input. Just switch on, wait a moment, and you’re ready to go!
  • Precise GoTo: Improves you Celestron mount’s pointing accuracy and places celestial objects in the centre of the visual field, even when using high-magnification eyepieces and small camera sensors.
  • Autoguiding: Accurately tracks celestial objects for pin-sharp stars when taking long-exposure astrophotos. Makes a separate autoguiding camera, a guidescope and a guiding computer redundant.
  • Support for orientation: Uses an automatic process to align an equatorial mount as well as possible.
  • High-quality four-lens optics: unique optical design by famous lens designer, Mark Ackermann, with sharper optics than other mini-guidescopes.

Operation is extremely simple: The StarSense autoguider is simply attached to the telescope like a finderscope and connected to the mount’s aux ports.

StarSense Autoguider 

Additionally: If autoguiding doesn’t interest you and you are simply looking for something to help you to align your telescope (alignment), you can turn to the affordable and currently available StarSense AutoAlign module – also available for Skywatcher mounts.

New telecentric from Baader: TZ-4S Sundancer II

August 8 2023, Stefan Taube

Like a Barlow lens, a telecentric extends a telescope’s focal length. However, the telecentric generates a parallel optical beam. This is particularly important when using etalon filters for solar observation in H-alpha light.

The new Telecentric TZ-4S from Baader is perfect for use with the Sundancer II H-alpha filter. It replaces the integrated telecentric which has a 3x focal length extension. Thanks to the 4x focal length extension created by the TZ-4S, the ideal aperture ratio of f/30 is achieved, even with f/7 to f/8 optics.

The achromatic Telecentric TZ-4S is designed for the entire visible spectrum, and can therefore not only be used with H-alpha systems.

You can find more information here in our shop.

Telescope Scout: telescopes for beginners in an inexpensive set

August 1 2023, Stefan Taube

We offer telescopes on our Telescope Scout magazine page featuring useful accessories that will ensure a successful start in your new night sky observation hobby.
You will save significantly compared to the sum of the individual prices of the telescope and accessories, and get a very good starter kit.

In the description for each set, you will find answers to the three most important questions:

  • Who is this telescope suitable for?
  • What can I see with it?
  • What will the extra accessories do?

We are offering the sets in the Telescope Scout pages at even lower special prices until 31 August 2023!

Find your entry-level telescope here and grab a bargain now!

Well-proven 10-inch Dobsonian from Skywatcher now available in an inexpensive set

July 25 2023, Stefan Taube

For some years now, the manufacturer Skywatcher has been featuring the Skyliner Classic series: well-proven and highly popular telescopes in the Dobsonian design. They offer great optical performance for very little money because the substructure, affectionately known as a rocker box, is relatively inexpensive.

We have put together the Skyliner Classic Dobsonian Set for you, which is even more inexpensive! The set comprises:

You get the largest telescope in the series, the 10-inch version, which features a 254 millimetre primary mirror, additional eyepieces, a filter for observing the Moon, and a practical laser to quickly collimate the telescope optics – and you save €108.85 on the cost of the individual parts!

All Skyliner Classic Dobsonians impress not only with their optics, but also with their standard equipment: two eyepieces, finderscope, eyepiece holder, carrying handle, and ascension axis tension fine adjustment are standard on all models!

More information, prices and options for ordering for all models can be found here in our shop!

Back in stock: the StarAid Revolution autoguider

June 26 2023, Stefan Taube

StarAid Revolution standalone autoguider

Now back in stock: the latest ‘C’ version of the StarAid Revolution autoguiding camera

The new ‘C’ version no longer needs a splitter as power supply and data transfer both take place using a USB-C port.

What does the StarAid Revolution camera offer?

StarAid enables you to use your mount’s guided automatic tracking without the need for an additional laptop or PC. This means you can take long exposures of fainter celestial objects! This is known as autoguiding.

With the StarAid Revolution, this is unbelievably easy – autoguiding starts automatically as soon as the camera is connected to a power supply. Point the telescope anywhere in the night sky and the StarAid will find multiple stars which can be used for autoguiding.

Use the StarAid app and built-in WiFi for further interesting possibilities:

  • Very simple mount orientation
  • Mount initialisation using plate solving
  • Special object guiding for comets: Take long exposures of these fleeting objects!

StarAid Revolution works best with a guidescope with a short focal length between 100 and 150 millimetres, such as the UltraGuide MKII 32mm.

You can find additional information about the StarAid Revolution camera here in our shop.

New Homestar planetarium from SEGA: the Matataki Blue

May 30 2023, Stefan Taube

Planetarium Homestar Matataki Blue


SEGA, the Japanese manufacturer, is expanding its Homestar series of planetariums with a new model. The Matataki planetarium simulates the twinkling of stars and has an integrated loudspeaker that produces atmospheric natural sounds. Choose the sound of the sea, river, or mountain as your soundscape.

As with all Homestar planetariums, you can change the  Matataki’s projection disc and choose a new theme from a wide range. It comes supplied with two discs so you can enjoy your new planetarium experience immediately.

The planetarium also features a timer, so it can be used to lull children young and old to sleep.

The Matataki planetarium has a built-in battery that is recharged using a USB cable. This battery means that the planetarium can be used independent of any power supply.

More information, prices, and ordering options can be found here in the shop.

Planetarium Homestar Matataki Blue

Redshift 9 Premium: the latest version of the popular planetarium software

April 19 2023, Stefan Taube

Redshift 9 Premium astronomy software delivers a true-to-life representation of the night sky on your computer.


Of course, the software offers much more besides: simulations of the movement of celestial bodies, 3D models, flights to celestial bodies and many other amazing possibilities! For example, you can observe the night sky from the perspective of an imaginary observatory on Phobos, the Martian moon. The integrated encyclopaedia and 29 interactive guides offer a didactic approach to astronomy.

With Redshift 9 Premium  and an Internet connection, you always have the latest data to hand: newly discovered comets, huge star catalogues (e.g. Gaia DR3) or the trajectories of satellites and other spacecraft.

Redshift 9 Premium offers an observation planner and even an ASCOM-standard telescope control for real-world observations. The software can be switched to red light mode for outdoor use.

Redshift 9 Premium is a comprehensive software program with many possibilities, which can be used for learning about astronomy or simply having fun!


Note: Software is for Windows 10 und 11. A DVD drive is needed for installation.

New Baader UHC Filter

March 28 2023, Stefan Taube



UHC filters are very useful aids in the fight against light pollution and natural sky brightness. They suppress artificial light but are transparent to wavelengths emitted by nebulous celestial objects. The effect of this for the observer and astrophotographer is considerably greater contrast.

The new Baader UHC-L filter is an all-purpose anti-light-pollution filter which also blocks LED lamp emissions in the blue part of the spectrum. Both passbands allow all of the light emitted by well-known nebulae through (the H-alpha and H-beta spectral lines of excited hydrogen as well as the OIII spectral lines of oxygen).

You can find all available filter sizes and formats here in our shop.


The Baader UHC-L filter offers all of the advantages of the CMOS-optimised Baader filter:

  • Adapted for typical CMOS camera sensors
  • Reflex Blocker™ coating
  • Blackened edges
  • Every filter is individually polished and coated for optical precision
  • Life Coat™ coating for high durability



10×42 EclipSmart solar binoculars by Celestron

February 27 2023, Stefan Taube

In order to safely observe the Sun, you need certified special filters, which provide enough protection from its intensive radiation, including the high proportion of UV radiation. Such filters are available for various optical instruments and are placed in front of the lens.

In the 10×42 EclipSmart, the manufacturer, Celestron, has created binoculars with this filter already pre-installed.


The benefits are clear and easy to see:

  • The ergonomic binoculars are always close at hand and can be kept in your car, for example. They also fit easily in your luggage when travelling to see the next solar eclipse.
    Solar observers can routinely follow developments in sunspots.
  • The 10×42 binoculars’ optics are powerful enough to be used for this purpose. Mounted on a tripod, the binoculars can reveal their full strengths.
  • The inbuilt filter cannot accidentally fall off and is protected against damage. This is not only important for solar observers, but also for outreach work carried out by observatories.

The 10×42 EclipSmart binoculars are exclusively designed for solar observations. This is why they are listed in the shop as a solar telescope.