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#2456460S Baader Maxbright II Binocular, complete set with following special accessories:1x 2456005 T-2 Prism Diagonal (#1C), 1x 2458105 1¼" nose spiece

Baader MaxBright® II Sets

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€495.00

Price excl. German VAT tax (19%): € 415.97

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MaxBright II with following accessories:None

Baader MaxBright^® II Binoviewer with adapters to T-2 and Zeiss micro-bayonet in a padded carrying case
With further accessories to connect it to any telescope with shortest possible mechanical distance
Available with T-2 90° star diagonal (32mm Baader prism), Classic Ortho eyepieces, various adapters and glasspath correctors in the set, depending on the application.
Please select the appropriate set below for further technical details

Important note:

Now also available in a set with two Classic Ortho or Classic Plössl eyepieces each at a favourable set price (two eyepieces for the price of one).

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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,- )

Baader MaxBright® II Sets

Technical data not yet specified
Please choose product variant from dropdown above to see technical data of your chosen product

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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Baader MaxBright® II Sets

Baader MaxBright® II Sets

Glasspath Correctors (GC)

1¼" and 2" Nosepieces

1¼" Star Diagonals

We offer the following Baader MaxBright^® II Sets:

Baader MaxBright® II Sets

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Service & Company

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Baader MaxBright® II Sets

Baader MaxBright® II Sets

Glasspath Correctors (GC)

1¼" and 2" Nosepieces

1¼" Star Diagonals

We offer the following Baader MaxBright® II Sets:

Baader MaxBright® II Sets

We offer the following Baader MaxBright^® II Sets: