Product Information

  • Baader Narrowband Filter – why?

    A brief introduction to the function of narrow band filters. Narrowband filters have revolutionized CCD photography for the “amateur astronomer” in the past decade in incredible ways. It was now possible for small telescopes, even in light polluted city areas, to photograph faint nebula – and generally the universe surrounding us in the incredible variety of coloured “gaseous areas” – in hours of exposure time, and by combining the exposure of each colour of the...
  • Information about Baader Filters and Filtercells

    About Baader Filters The variety of uses for filters in amateur astronomy has considerably increased during the last decade, enabled by both more accurately manufactured optical accessories, and, above all, by the “digital revolution“. In the old days, colour filters for visual planetary observations were not screwed in the front part of the eyepiece, but were simply placed between the eyepiece and the eye. Plane-parallelism of these filter glasses was not important, because they were not in the optical path of...
  • Perfect coma correction with Baader-MPCC – but how to adapt eyepieces?

    We received the following question and found it important to write an extensive answer for other customers. QUESTION: I purchased the Hyperion Zoom and the MPCC Mark III. Can you tell me how to adapt the eyepiece to the coma corrector? I also want to use other eyepieces. How do I know the right distance between fieldstop position and the MPCC? ANSWER: It is easy to produce an adjustable 1¼" eyepiece adapter for the Baader-MPCC...
  • Comet Filters

    The two tails of the comets   The most impressive tail of a comet is caused by sunlight which is reflected and scattered by the dust trail of the comet - also called dust trail. In addition, there is often a gas tail, depending on the amount of gas emitted by the comet. This gas is ionized (excited to glow) by the energy of the solar wind. This ion tail shines preferably with the emission...
  • Detailed Customer Review on CDK 17" PlaneWave Astrograph

    Dear Mr. Baader, I am happy to comply with your request and share with you my criteria that led to the purchase of the 17 inch telescope from  Planewave, and following my experience with this telescope. Since this was a rather complex topic, please forgive the long text and its extent , which certainly clearly exceeds a "normal" customer judgment. Download: detailed review on CDK 17" PlaneWave Astrograph (pdf-file) Decision criterions for the choice of...
  • Astro-Physics – High-end German Equatorial Mounts

    HIGH-QUALITY PROFESSIONAL ASTRONOMICAL MOUNTS Keeping to the same quality standards that have made the fully-apochromatic refractors legendary, Roland Christen's company has been building German Equatorial GoTo mounts for more than three decades. Their proven stability, accuracy and durability is the reward for anyone who can endure the traditionally long delivery times. Two "el Capitan" mounts are working in the Antarctic for several years now, even at temperatures of -75°C. They are perhaps the most spectacular...
  • The Encke Gap in Saturn’s ring system - imaged with only 17" aperture

    On 28 July 2018 around 22:00 UTC we obtained the best image of the planet Saturn so far. It was taken through the 17" Planewave Astrograph of the Rooisand Observatory in Namibia. The imaging camera was a ZWO ASI 290M with 2.9 µm pixel size. The primary focal length of the telescope was extended by a factor of 1.7 with a Baader Q-Turret Barlow lens element, the equivalent focal length was about 5 meters. A...
  • About production delays of Baader Highspeed Filters

    We have received the following question on our Narrowband (and f/2 Highspeed) filters: I understand that narrow-band filters suffer shifts of the passband for light rays that come in at an angle. Is that why they are good to a certain f-ratio and why you offer different filters for fast optics (how do they work? are they actually de-tuned to have the correct passpand at a different average angle?)? I would like to ask whether...
  • Optec Motorfocuser - Digital Focusing Units

    Digital, temperature compensating focusing untis by OPTEC For many years Optec has been committing itself to the automation and motorization of telescopes as well as to the production of mechanical adapters and optical accessories. Optec is a US-based company which designs and manufactures intelligent accessories for amateur astronomy since 1979. In collaboration with Starlight Instruments, digital temperature compensating focusing units and accessories / software have been developed to meet all the requirements of the latest technology...
  • Free Download: 3D-printable UFC-Case for filter sliders

    You are the owner of one or more UFC filter sliders and are looking for a way to safely store the filter sliders with mounted filter? Then we have the solution for you: our 3D-printable UFC-Case for filter sliders. This box with hinged lid holds all UFC filter sliders. We offer you the STL files (consisting of two parts) as free download, you only need to login with your customer account or register on our...

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