Produktinformationen

  • 17.5mm Morpheus® Review

    William "Bill" Paolini has been actively involved in optics and amateur astronomy for more than 50 years, and is author of the popular book: Choosing and Using Astronomical Eyepieces We appreciate the positive feedback we have received so far. With 3 years of additional development time - the Morpheus 17.5mm was also the most elaborate eyepiece project we had ever started. A detailed Morpheus 17.5mm test report has now been published by William Paolini in...
  • Optical tube lengths of Clicklock mirror diagonal

    Recently we received the following questions on our 2" Clicklock Diagonal Mirror and wanted to answer including the below illustrations for other customers: According to image below is the optical path mentioned in technical data (112mm for #2956100 and 109mm for #2956100Z) measured along optical axis from point A to B or point A to C? what is the dimension from point B to C? Can 2” barrel (at point A) be removed from #2956100 and...
  • An experience report on the new Baader Telecentric System TZ-3 and the Research Grade (RG) Telecom­pressor (TC) 0.4

    An experience and observation report on the new Baader Telecentric System TZ-3 and the Research Grade (RG) Telecom­pressor (TC) 0.4 for solar observation in the H-alpha light with SolarSpectrum filters download the complete review (pdf) Introduction Successful H-alpha-observations of the sun with narrow-band line filters from the manufacturers   “SolarSpectrum” and / or "DayStar" require an almost parallel beam of light with a focal ratio of approx. f/30 directly in front of the filter, otherwise the...
  • Avalon Instruments - Fast Reverse Mounts

    Avalon Mounts: Portable mounts for astronomical imaging Goal: Total reliability The Avalon LineAR and M-Uno Fast Reverse Mount are equatorial mounts designed for astronomical imaging. With a load capacity of 20-25 kg (44 – 55 lb) the mounts are unrivaled in their construction, qualitiy and price, and are sutiable for both visual and photographic observations. The M-Zero offers the same technology. With a load capacity of 8-13 kg, the low weight and high quality of this mount...
  • Apochromatic Triplet Objective: Why oil-spaced lenses?

    Why an oil-spaced triplet-lens? The first successful experiments with oil-spaced triplet-lenses were probably done by Wolfgang Busch from Ahrensburg, who had several discussions about this with Carl Zeiss Jena, back in the days of the German Democratic Republic. Even then, this technique was far superior to the standard technics like air-spaced or cemented lenses. But it was hard to keep the joining medium inside of the lens, because of insufficient synthetic oils and many other...
  • The CDK Optical Design

    The CDK [Corrected Dall-Kirkham] telescope is based on a new optical design developed by Dave Rowe. The goal of the design is to make an affordable astrographic telescope with a large enough imaging plane to take advantage of the large format CCD cameras of today. Most telescope images degrade as you move off-axis from either coma, off-axis astigmatism, or field curvature. The CDK design suffers from none of these problems. The end result is a...
  • Observation: Minor planet Clausbaader (5658)

    From Dipl.-Ing. Wolfgang Paech – Onjala- and Chamäleon Observatory, Namibia For this year's longer stay in Namibia we planned to photograph the minor planet (5658) Clausbaader. It had a high altitude in the evening sky, close to Saturn. The series is intended as a small tribute to Mr. Claus Baader, the founder of Baader Planetarium in Mammendorf, who was one of the leading personalities in the field of amateur astronomy and public education in the...
  • Implementation of UV/IR Cut Filter - Test Report

    Shooting the moon through a normal Baader UV/IR Cut Filter in comparison with the Baader IR Passfilter >>>> In the near infrared spectral range atmospheric disturbances (seeing conditions) are much more less than in the visible spectral range. Images taken in the near infrared light are often sharper than images taken in shorter wavelength. Special the moon (and the sun also) are nice targets shooting images with the IR Passfilter due to their brightness. All...

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