Manufacturer: -TS Zubehör
Product number: Concenter-2z

EUR 83,00


incl. 19 % VAT (DE)  
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  • On stock




rating: 4.8 of 5
  • Details..
  • Technical data..
  • In the box..
TS 2" CONCENTER - you cannot adjust a Newtonian more easily
The alternative to all collimation tools on the market! Now the center of the secondary is being taken into account (without a mark in the center). The adjustment is being done with the fully illuminated focuser. Even the Newtonian offset is concidered. Now even beginners achieve a perfect collimation of their Newtonian telescope - even for astrophotography.

The Concenter eyepiece consists of a closed cylinder, similar to a Cheshire eyepiece. The crucial difference is the inserted disk.

You don´t need a center mark on the secondary mirror for collimation. The collimation is made directly via the edge of the mirror so that an exact congruence of the optical light ares is met, even regarding the offset. Now you collimate significantly more precisely than with a laser, eabove all you can be sure that not only the axis, but also the field is optimally adjusted.

A manual for collimating your Newtonian with the Concenter collimation eyepiece:
If you hold the adjustment eyepiece in your hand, you will notice a transparent plastic disc with a central bore and concentric engraved circles inset on the telescope side at the lower end. At the other end you will find a central hole, which is chosen so small that the eye has no opportunity to avoid centering when looking through. After inserting the collimation eyepiece into the focuser you will see faint translucent rings in front of the optical components of the telescope.
Collimation of the secondary mirror to the focuser for optimum illumination

This step is made with covered primary mirror. Pay attention to a good illuimination when using the concenter eyepiece. Now the secondary mirror, a rectangular mounting of the focuser supposed, is adjusted so that it appears between the circles of the collimation cicles and without offset. With the focus control of the focuser you can bring the outer edge of the secondary mirror and the matching circle to cover. Even small deviations from the ideal position are recognized immediately. By doing this, you place the secondary mirror in the optimal position to the focuser to millimetre accuracy. This step is necessary only once, you can remove the cover of the primary mirror afterwards.
Alignment of the secondary mirror to the main mirror

While looking into the eyepiece, the tilting is changed by means of the screws of the secondary mirror until the bright reflection of the primary mirror in the secondary mirror is concentric with the circles.
Alignment of the primary mirror to the optical axis

Shift the center mark of the primary mirror exactly in the center of the concentric circles by using the adjustment screws of the primary mirror cell. You will notice even the slightest deviation. After this, your Newtonian telescope will be perfectly collimated.
Type:Collimation eyepiece
Barrel size:2"
Concenter collimation eyepiece
Protective container



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Reviews

Written by Milanom MiopetkoBg
on 2023-06-03

"super instrument for centering the secondary under the focuser. the concentric circles could perhaps be thinner, but I´m happy with how it positions the secondary under the focuser tube."

Written by Michael Howes
on 2023-03-30

"very good product for my telescopes and a good service to the UK."

Written by Gerrit Bachmann
on 2022-12-01

"Durchaus etwas gewöhnungsbedürftig, aber nahezu perfekt für die Justage der Spiegel. Zur Endkontrolle ist dennoch ein Laser oder Cheshire nötig. Preislich finde ich es an der Obergrenze, aber dafür steckt eine gute Idee und hohe Qualität dahinter. Wenn es der Okularauszug zulässt, am besten das größere 2"" Concenter wählen, auch wenn man es vielleicht gewohnt ist mit 1,25"" zu beobachten oder zu justieren. Damit ist man flexibler in der Anwendung."

Written by Adrian Bernard
on 2022-11-02

Alles was man für eine einwandfreie Justage braucht.
Die Spiegelkanten und Reflexionen beim Durchblicken richtig zuzuordnen stellt am Anfang eine Herausforderung dar. Hat man es einmal durchsucht geht die Justage damit einfach und schnell.
Ich nehme meistens eine Taschenlampe zu Hilfe um entweder die Kreise am Concenter oder die Spiegelkanten deutlicher zu sehen.

Written by PEDRO NASCIMENTO
on 2021-08-30

"This product is very useful, specially to calibrate/align the secondary mirror, after that I use a laser-tool to collimate the primary one."

Written by Carlos Taylor
on 2021-08-17

"Great product "

Written by Peter Nielsen
on 2021-06-05

"*** Bedienung ist kniffelig."

Written by Steffen Schreiber
on 2020-08-26

"Simples Prinzip, funktioniert gut. Je nach Lichteinfall könnten die Kreise gerne etwas deutlicher zu sehen sein, aber die Justage geht auch so gut."

Written by Andrey Molodtsov
on 2020-06-11

"Very convenient accessory"

Written by Andreas Kühne
on 2019-12-19

Sehr gute Verarbeitung und durchdachte Qualität, so wie es sich für ein ´Werkzeug´ gehört. Die Kollimierung ist damit hervorragend einfach zu bewältigen.

Written by Frank Stöber
on 2019-12-06

Einfacher den Fangspiegel Justieren
geht nicht!Perfekt

Written by Markus Axtner
on 2019-10-13

"Einfach geniasl das Teil. Die Justage von Newtons wird dadurch in Zusammenarbeit mit Laser zum Kinderspiel."

Written by William Berben
on 2018-07-12

"Excellent build quality, that works easy, gives clear view on collimation. This concept works."

Written by Bernd Henrichs
on 2017-12-08

"Gute Produktqualität. Passgenau in der 2""-Ausführung. Ein gutes Hilfsmittel zu Justierung. Empfehlenswert"

Written by Michael Radnoti
on 2017-10-01

"Sehr hilfreich, hebt sich auch unbeleuchtet gegen Himmelshintergrund gut ab."

Written by Wolfgang Funk
on 2017-09-24

"Gut brauchbar, mit Einschränkung"

Written by Andreas Reck
on 2017-09-12

"Sollte in keinem Zubehörkoffer fehlen! Einfacher und schneller geht es nicht mehr. Wird am 16"" Dobson eingesetzt. Offset wird berücksichtigt. Kann man nur empfehlen!"

Written by Michael Czybor
on 2017-08-13

"Einfaches Prinzip, ideal um ein Newton-Teleskop zu justieren."

Written by Bodo Wilke
on 2017-04-22

"Der Concenter in 2"" erfüllt seine Aufgaben bestens. Genauer und einfacher ist mein f5 Newton nicht zu justiere. "

Written by Thomas Stibor
on 2017-01-25

"Sehr schneller Versand und sehr gutes Produkt."

Written by Dirk Steffens
on 2016-12-23

"Seit ich das Concenter Okular habe ist es ein Kindespiel den Fangspiegel zu justieren. Zum Vervollständigen der Justage empfehle ich noch einen Justierlaser."

Written by David García
on 2016-12-14

"The best tool to get the secondary mirror perfectly aligned with the focuser. I recommended it!"

Written by Dirk Cornelis
on 2016-11-14

"superb to get my big 16 inch F4.5 newton collimated, ready for finetuning under the stars. superbly easy product. Takes only minutes."

Written by Ulrich Matthes
on 2016-09-30

"ein musthave für jeden Teleskopbesitzer. "

Written by Clemens Czepe
on 2016-01-31

"Sehr gut"

Written by Volker Marx
on 2016-01-07

"Top Ware einfach in der Handhabung ideal auch für Anfänger gute Beschreibung dabei."

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