M68 Extension Tubes (7.5 / 10 / 20 / 40 / 60 / 80 / 100 mm)

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M68 Extension Tubes (7.5 / 10 / 20 / 40 / 60 / 80 / 100 mm)

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€ 47.00 Price excl. German VAT tax (19%): € 39.50

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  • M68 extension tube for classic eyepiece projection or Fluoride Flatfield Convertors (FFC)
  • Telescope side M68x1 male thread
  • Eyepiece-/camera side M68x1 female thread
  • High-quality Aluminum, available in different lengths

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€ 47.00 Price excl. German VAT tax (19%): € 39.50

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Baader M68 Tele-Compendium

Telescope connection for Baader FFC and telecentric Systems

Scope of Supply of the M68-Tele-Compendium
Anwendungsbeispiele des M68-Tele-Compendiums
Examples of M68 tele-compendium

Telescopes which are used for photography on a professional level need to avoid any deflexure under load. This flexure is is no problem if you observe only visual, but for photography or spectroscopy any deficiencies will make your results unusable. So, you do not only need a sturdy mount with a robust connection to the telescope, but also a very good focusser – with a sturdy connection to equipment like cameras or others sensors, especially if they are used with long accessories like telecentric systems. Usually, these accessories are only attached with a simple plug-in connection. Even with good, self-centering eyepiece-holders with brass clamping ring long accessories can tilt because of the long lever. This tilt will impair professional operation. There is no better adaption than a generously sized screw coupling.

The Baader M68 Tele-Compendium solves this problem. It combines the function of a photographic compendium or matte box, which is a versatile lens hood, with a very sturdy and variable telecope adapter – that's why we have chosen the name Tele-Kompendium. This set is based on the M68-thread which is also used on the large Zeisstelescopes. Because of this, M68 is quite common and perfect for a sturdy connection of optical accessories like the Fluorit Flatfield Converter (FFC) for photographung the planets or a Telecentric System together with H-alphasytems for solar observation.

Connections of the Baader Tele-Compendium

The Tele-Kompendium is screwed onto the telescope. On the telescope side, there are threads for 2,7" (Astro Physics), M68 (Zeiss), M60 (Vixen) and a female M56-thread (Synta). There are optinal adapters for the following systems avaiable:

  • TEC/Feathertouch-focusers
  • Baader 3" Steeltrack- und Hyperion-focusers
  • Pentax-SD-telescopes
  • Takahashi
  • Celestron (3,3"-SC-thread)
  • Zeiss (M68 quick changer)

FFC or Telecentric System are coupled by a T-2-thread at the telescope-side of the Tele-Kompendiums. On the eyepiece side there is the Baader Ultrashort Adapter, which offers a M68-thread as well as standard 2“ eyepiece holder with brass ring and two locking screws to avoid tilting. A 2“/T2 nosepiece is also included – there are many accessories avaiable which use the T-2-thread. Because the 2“-connection is at the far end of the setup, the leverage effect is reduced – and brass clamping ring and two locking screws hold the accessories firmly in place.

The seperate extension tubes enable you to use the system with variable length according to the needs of your setup to achieve the best resultsuse every distance. At the same time, stray light is blocked – no light from the outside can diminish the contrast, and the inside of the telecompendium is carefully blacked.

Optionally available Telescope Adapters of the M68-Tele-Compendium.
Optionally available telescope adapters for the M68-Tele-Compendium.


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3 Item(s)

Chris 352/12/2023 19/12/202313:22
  • Rating:
Ich hatte mir um mit der FFC warm zu werden verschiedene günstige M48 Hülsen gekauft. Leider gab es damit diverse Probleme: die Verarbeitung erschien sauber, aber zusammengeschraubt war das Rohr nicht 100% gerade. Ausreichend Stabil war das ganze noch weniger. Immerhin sind es schon bei 5x Vergrößerung 210mm Verlängerung ... Es wackelte wenn nicht fest zusammen geschraubt, wenn es fest zusammengeschraubt war ging es sehr schwer wieder auseinander. Aber das größte Problem waren Reflexionen speziell bei hellen Objekten. Fotos von Mond waren quasi nicht möglich.
Deshalb dann doch der 'teure' M68 Adapter mit Verlängerungen von Baader. Sehr sauber verarbeitet, super stabil, und vor allem mit guten matten Blendenringen innen. Letztendlich die deutlich teurere aber doch preiswertere Lösung und meine Empfehlung für hohe Vergrößerungen mit der (sehr guten) FFC.
  • Stabilität, Reflexionsarm innen
  • -
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Stephan 130/05/2019 11/05/201910:34
  • Rating:
Macht, was es soll.
Passt sehr gut und ist ebenfalls sehr gut verarbeitet
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K.V. 94/04/2019 05/04/201906:57
  • Rating:
Sehr gut
Sehr stabiler und genau gefertigter Zwischenring. Adaptierung der Kamera ist somit einfach möglich. Ich bin sehr zufrieden.
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