Baader Planetarium Blog Posts

  • 2,1M / 2,6M / 3,2M BAADER reference domes for private use

    This post has not yet been translated to english, we apologize. In the meantime until we get to it, please use Google Translate or a similar tool. Thank you for your understanding. Durchmesser 2.1 Meter Kuppel 2.1 Meter Kuppel mit Flachdachadapter ... der Einbau der Kuppel verlief reibungslos sie funktioniert seither einwandfrei. Selbst bei Schneetreiben und starkem Frost, wie wieder in diesen Tagen, sind keine Einschränkungen der Funktionalität zu bemerken. In früheren Jahren habe ich...
  • Baader 5.3m SLR-dome for Metsähovi Geodetic Research Station, Finland

    Baader 5.3m SLR-dome for Metsähovi Geodetic Research Station National Land Survey of Finland / Finnish Geospatial Research Institute Department of Geodesy and Geodynamics Subject: Customer reference on 5.3-meter fiberglass reinforced polyester observatory dome (up and over shutter -type) Link to the original official Test-Review PDF Backgound: Finnish Geospatial Research Institute (FGI, formerly known as the Finnish Geodetic Institute) of the National Land Survey of Finland is operating a geodetic research station at Metsähovi, Kirkkonummi, Finland (60.2N, 24.4E). Metsähovi...
  • The Baader L-RGB-C CCD Filters

    A brief introduction to the function of CCD Filters Without modern RGB-filters, the CCD-revolution in astronomy would never have happened. It´s these filters that allow schools and universities do do meaningful imaging in science and education under totally light polluted skies from the midst of major cities. Unlike terrestrial objects, astronomical objects shine in discrete emission lines. For this reason, any RGB-filter design with gently raising and falling slopes on either side of the transmitted spectral region...
  • 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...
  • What Narrowband / lines filter (O-III, H-beta, H-alpha, S-II) can improve the results of my Canon DSLR with APS-C Sensor?

    If you want to create absolutely beautiful color photos of bright deep sky objects (entry level) and wish to work with sophisticated techniques of Astrophotography (and the correct tracking), then your camera is ideal. For advanced working with long exposure times, i.e. with narrowband emission line filters, the DSLR is less suitable. The reason is partly in the manufacturer’s narrow cut filter that is installed before the camera’s sensor only allows some of the main...
  • Will the conversion affect the position of the focal plane?

    The ACF-/BCF- replacement filter has exactly the same effective optical thickness as the original AA filter. During the conversion process the focus is calibrated to the best of our ability. In addition: the conversion will not affect the auto-focus function at all. That is one of the advantages of having our professional modification service.
  • What is the difference between ACF and BCF Filters?

    Question: I am interested in the conversion of a Canon 400D / 40D. On their websites you can only find the filter curves and description for the ACF filter, not the BCF filter used for this conversion! What are the differences in the daylight suitability if it is not simply identical with the ACF filter? Also I noticed that the ACF filter from 1100nm is permeable. Is this a problem? Answer: The CMOS chips of...
  • Can you use external filters (like IR or UV) for the modification?

    No, it is absolutely necessary to use filters with the precise size and thickness to guarantee maximum quality. We cannot rely on unknown filters, in addition we are only specialized in astro modifications.
  • Does modifying my camera mean that it will be unusable for daylight photography?

    No, with manual white balance it is easy to recalibrate the images to daylight values. Only when using images for professional applications a second, unmodified body can be useful, cause there will be a slight reduction in dynamic range and slightly more moire effects visible.
  • Baader Optical Wonder – a real optical wonder

    Shooting the Moon – in bright daylight with a Celestron SkyRis 445 M through a C14 SCT and a Baader IR Pass-filter Dear Baader Team, When I returned to Namibia this spring, I found my favourite planetary Celestron 14 SCT-OTA in a catastrophic condition. The Schmidt-corrector-plate was looking just plain filthy since someone had omitted to properly close the dust cap during all the rainy season. The telescope is located at the Onjala Lodge. The Lodge is...

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