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MaxBright® II Binoviewer Set with Glasspathcorrector 1.7x and 2" / T-2 Nose Piece

Name: MaxBright® II Binoviewer Set with Glasspathcorrector 1.7x and 2" / T-2 Nose Piece
SKU: 2456464
Price: 585 EUR
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# 2456464

€585.00

Price excl. German VAT tax (19%): € 491.60

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MaxBright II with following accessories:1-7x GPC and 2 inch nosepiece

Baader MaxBright^® II Binoviewer with adapters to T-2 and Zeiss micro-bayonet in a padded carrying case
27mm prisms with 26 / 25,5mm clear aperture, for all 1,25"-eyepieces – up to focal lengths of 35mm
Ergonomically designed ClickLock^® eyepiece clamps with diopter adjustment
Baader Astro T-2 System™ connector thread (M 42 x 0.75) and Zeiss micro-bayonet for the shortest possible connection to (almost) all existing telescope systems
Optical tube length: 110 mm (+/- 1 mm tolerance)
with special accessories:

Glasspathcorrector 1.7x for Baader-Binoviewer with T-2 thread (MaxBright II® and MaxBright®) (#2456316 , € 127,- )
2" Nosepiece to T-2/M48a (#2408150 , € 40,- )

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Read the extensive 22-page test review by Bill Paolini (May 2nd, 2020)

Baader MaxBright® II Sets

The Maxbright^® II Binoviewer is available in differents sets which include further accessories.

Not included are Glasspath Correctors (which version you need depends on your telescope), eyepieces, star diagonal and T-2-adapter. Detailed informatin about the accessories can be found in our Instruction Manual of the Maxbright^® II B inoviewer.

Glasspath Correctors (GC)

A Baader Glasspath Corrector ® (GC) A Baader Glasspath Corrector (GC) fulfills two critical roles. Firstly, it corrects the glass path – that's the amount of glass through which light passes on its way through the prisms and which causes chromatic aberrations (colour errors) with fast telescopes. Secondly, the GC magnifies the focal length and moves the focal point of the main telescope. You will find more information about choosing the right compensator in the Instruction Manual of the Maxbright^® II B inoviewer.

1¼" and 2" Nosepieces

A T-2 nosepiece in 1¼" (31,8mm, # 2458105 ) or 2" (50,8 mm, # 2408150) is used to connect the binoviewer either through the pre-installed T-2 coupling nut or the optional TQC quick changer with a focuser/eyepiece clamp. They can also be used to use a T-2 star diagonal at 1¼" or 2" focusers.

1¼" Star Diagonals

The optical length (that is, the necessary back-focus) must be added to the optical length of the binoviewer.

We offer the following Baader MaxBright^® II Sets:

MaxBright® II Binoviewer Set with 1¼" / T-2 Nose Piece (#2456460A , € 495,- )
MaxBright® II Binoviewer Set with 2" / T-2 Nose Piece (#2456460B , € 499,- )
MaxBright® II Binoviewer Complete Set with Special Accessories (#2456460S , € 785,- )
MaxBright® II Binoviewer Set with Glasspathcorrector 1.25x and 1¼" / T-2 Nose Piece (#2456461 , € 580,- )
MaxBright® II Binoviewer Set with Glasspathcorrector 1.25x and 2" / T-2 Nose Piece (#2456462 , € 580,- )
MaxBright® II Binoviewer Set with Glasspathcorrector 1.7x and 1¼" / T-2 Nose Piece (#2456463 , € 585,- )
MaxBright® II Binoviewer Set with Glasspathcorrector 1.25x and 2" / T-2 Nose Piece (#2456462 , € 580,- )
MaxBright® II Binoviewer Set with Glasspathcorrector 1.7x and 1¼" / T-2 Nose Piece (#2456463 , € 585,- )
MaxBright® II Binoviewer Set with Glasspathcorrector 1.7x and 2" / T-2 Nose Piece (#2456464 , € 585,- )
MaxBright® II Binoviewer Set with two 6mm Classic Ortho Eyepieces (#2456467 , € 549,- )
MaxBright® II Binoviewer Set with two 10mm Classic Ortho Eyepieces (#2456468 , € 549,- )
MaxBright® II Binoviewer Set with two 18mm Classic Ortho Eyepieces (#2456469 , € 549,- )
MaxBright® II Binoviewer Set with two 32mm Classic Plössl Eyepieces (#2456470 , € 549,- )

MaxBright® II Binoviewer Set with Glasspathcorrector 1.7x and 2" / T-2 Nose Piece

Product Details

SKU
2456464
EAN Code
4047825043221
Manufacturer
Baader Planetarium
Net weight (kg)
1.33

Customer Reviews

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Top customer reviews

MaJur

2026-05-31 18:47:58

I recommend this product

Rating

MaxBright II -Set mit 2x 10 mm Classic Ortho - Beobachten mit beiden Augen ist 'ne andere Liga

Es ist wie immer empfehlenswert, sich im Vorhinein mit dem Produkt auseinanderzusetzen, insbesondere mit den Montagemöglichkeiten und etwaigem benötigten Zubehör. Ich wurde daher nicht mit unerwarteten Überraschungen konfrontiert, dank der guten Dokumentation von Baader und mit Hilfe diverser einschlägiger Astroforen. Montage: Ich montiere den Bino-Ansatz mit Schwalbenschwanz direkt am T-2 Zenitprisma mit 32mm Prisma (#2456005), das ich beidseitig mit Schnellwechslern ausgestattet habe, um ggf. auch zwischen mono- und binokularem Beobachten wechseln zu können. Okularseitig habe ich den T-2 Standard-Schnellwechsler (# 2456313) und fernrohrseitig den T-2i Schwerlast Schnellwechsler (# 2456313A) montiert. Beide Schnellwechsler klemmen grundsätzlich zuverlässig, jedoch würde ich dem Schwerlast Schnellwechsler eindeutig den Vorzug geben, weil er meines Erachtens einen besseren Kraftschluss herstellt. Daher werde ich den bisherigen Standard Schnellwechsler gegen einen zweiten Schwerlast Schnellwechsler austauschen. Es gibt einfach ein besseres Gefühl. Der Backfokus vom Takahashi TSA-120 reicht vollkommen aus, um das Bino ohne Glaswegkorrektor verwenden zu können. Ich nutze allerdings standardmäßig den 1,5x Extender am TSA-120 Optik: Schärfeleistung, Kontrast und Bildfehlereigenschaften sind sehr gut! Außer der normalen leichten Abdunklung gegenüber dem monokularen Beobachten, konnte ich bisher in diesem Setup keine negativen Auffälligkeiten feststellen. Sowohl stellare Objekte als auch Mond und Planeten werden bis zum Bildrand scharf und kontrastreich abgebildet. Signifikante chromatische Fehler sind mir trotz fehlendem Glaswegkorrektor nicht aufgefallen. Im Gegenteil: Das beidäugige Sehen bringt bei mir insgesamt eine wesentlich bessere Detailfülle. Die Mondbeobachtung ist ein brillanter Genuss (z. B. Rimae Plinius). Jupiter und Venus sind beide faszinierend. Fazit: MaxBright II macht nicht nur äußerlich einen guten Eindruck, sondern auch dessen "innere" Werte überzeugen. Würde ich es wieder kaufen bzw. weiterempfehlen? Definitiv!

- es ist relativ leicht - Bildqualität leidet nicht - beidäugiges Beobachten am Fernrohr ist zwar Luxus, aber trotzdem ein Gewinn - Dioptrienausgleich - Anschlussmöglichkeiten

- die Kunstleder-Ummantelung ist zwar haptisch zweifellos sehr angenehm. Erfahrungsgemäß lösen sich aber solche Applikationen mit der Zeit ab. Von daher wäre mir ein reines Metallgehäuse lieber, weil langlebiger und ohne "Abnutzung".

Rino / November 13, 20252 Answers

Anonymous / September 25, 20252 Answers

In this case, you will need an additional 2" nose-piece with the product number: 2458130 2" Nosepiece to T-2/M48a – with Safety-Kerf - English
Baader Web Team / September 25, 2025
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We always recommend a T-2 star diagonal as this gives you the shortest possible adaptation, so that you can use a GPC with a lower factor and use lower magnifications, too. Chances are good that you can use the 1.25x gpc with a T-2 prism diagonal and achieve lower magnifications, without having a disadvantage at higher magnifications. If you don't mind the disadvantages of a GPC with higher magnification, you can use a 2" star diagonal on a refractor.

On a Schmidt-Cassegrain, you can reach focus with almost all accessories, and don't need a GPC to reach focus. But: As you are moving the main mirror, you are increasing the focal length, while you are at the same time loosing aperture, because the main mirror moves closer to the secondary and can’t fully illuminate. Image quality also doesn’t improve when you change the distance between the optical elements so drastically and observe at f/13 or worse.

We developed the T-2 star diagonals not only so that you can achieve focus with shorter GPCs, but also so that SCs and similar telescopes can be used closer to the focal point for which they were designed.

That’s why we do not recommend using a bino-viewer behind a 2“ star diagonal even if you can reach focus with a Schmidt-Cassegrain: You’ll probably be disappointed by the image and think that it is a problem oft he bino-viewer, although it is caused by the drastically changed optical configuration inside oft he telescope itself.

Even on a SC with T-2-star diagonal, we recommend at least the 1.25x gpc, too, at least for higher magnifications. At f/10, it is not strictly necessary – but it still shortens the necessary back focus, so that optical aberrations induced by the mirror distances are less.
Team Baader Planetarium / September 25, 2025
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Brian Deis / November 12, 20231 Answer

You need a T-2 prism diagonal (## 2456095 or # 2456005), a T-2 nose piece (1.25" # 2458105 or 2" # 2408150) and a glasspath corrector. For the Schmidt-Cassegrain, we'd recommend the 1,25x GPC (you can reach focus without it, but it improves image quality and illumination); for the refractor, it depends on the available back focus. The T-2 prism diagonal is recommended as it makes the shortest adaptation possible - in theory, any other star diagonal can work, but it may be too long so that you probably will not reach focus or need a stronger glasspath corrector. We have a description of the different adaptations and how to measure the back focus in the manual at https://www.baader-planetarium.com/en/downloads/dl/file/id/1614/product/4317/manual_baader_maxbrightr_ii_binoviewer.pdf We do not ship to the USA, but we kindly ask you to contact our local distributor Alpine Astro. You can find his adress and other dealers worldwide in our store locator at https://www.baader-planetarium.com/en/storelocator
Baader Web Team / November 20, 2023
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Robert / July 28, 20201 Answer

For Mak and SCT, we recommend Glasspathcorrector 1:1,25 for Baader-Binoviewer with T-2 thread (MaxBright® II and MaxBright®) # 2456314 or Glasspathcorrector 1:1,25 for Baader-Binoviewer with Zeiss ring dovetail (MaxBright® II and Mark V) # 2456314Z depending on whether you use the bino with Zeiss dovetail or T-2-connection (the optics are the same, only the body is different. For the lens telescope, you'd have to measure the available backfocus. We have an extensive description of chosing the right GPC e.g. in the manual of the MaxBright II at https://www.baader-planetarium.com/en/downloads/dl/file/id/1614/product/4317/manual_baader_maxbrightr_ii_binoviewer.pdf on page 20
Baader Web Team / July 29, 2020
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