Baader T-2 / 90° Baader Roof-Prism with BBHS ® coating (T-2 part #02)

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Baader T-2 / 90° Baader Roof-Prism with BBHS ® coating (T-2 part #02)

# 2456130

€ 275.00 Price excl. German VAT tax (19%): € 231.09

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  • T-2/90° Baader Roof-Prism. Manufactured by Zeiss standard, both sides with T-2 system threads
  • This Prism is multicoated and built in a solid metal body. T-2-thread on both sides, therefore extremely short and adaptable on every telescope-system.

Product Questions

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Are the BBHS coatings easy to clean? Do the coatings have a life comparable to your dielectric coatings? Do the coatings degrade over time and at what rate? Is there a difference in performance between your dielectric diagonal and the BBHS one, what are the differences and are they significant or very slight? I own an early Televue APO 4 inch refractor.
Question by: John on Sep 9, 2016 1:29:00 AM | 1 Answer(s)
Regarding the quality of visual observation, is there any difference between this T2 Roof prism (2456130) and the 2" Astro Amici Prism (2456120)?
Question by: Rafael Sampaio on Jun 28, 2020 11:11:00 PM | 1 Answer(s)
Which accessories do I need to connect this diagonal to a Celestron Edge HD 8? I think I may directly screw the diagonal to the tube but is there another alternative as I also use the focal reducer.

And what about the eyepiece? Is it compatible with 2’’ and 1.25’’?

Question by: Pierre-André Tapparel on Oct 27, 2021 7:48:00 PM | 1 Answer(s)
Is this T-2 Baader Roof prism recommended for using with Mark V and a Celestron 9.25 SCT ? If so, what additional accessories are needed for a complete configuration?
Question by: Rafael Sampaio on Jun 16, 2020 4:34:00 PM | 1 Answer(s)
Will the T-2 Quick Release work with the T-2/90 degree roof-prism with bbhs coating?
Question by: John Gleason on Mar 6, 2020 9:09:00 PM | 1 Answer(s)
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Additional Information

Manufacturer Baader Planetarium
SKU (#) 2456130
Net weight (kg) 0.17
Optical Design Erecting Prism
Inner Connection (lens sided) Thread, T-2 (M42 x 0,75)
Inner Connection (eyepiece/-camera-sided) Thread, M34
Outer Connection (eyepiece/-camera-sided) Thread, T-2 (M42 x 0,75)
Reflection surface Sealed BBHS coating
Prism Glass (Type) BaK-4
Glas path 50 mm
AR-Coating Phantom Coating® Group
Image Orientation Erect image, Non-reversed
Optical length (mm) 47.5
Clamping System no clamp
Deflection angle 90°
Inner Diameter / Clear Aperture (mm) 31

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Gerd R. 302/10/2017 30/10/201709:48
  • Rating:
Baader T-2-/ 90° Astro-Amici Prisma
Bei ersten Tests machte das Amici-Prisma auch bei höheren Vergrößerungen eine guten Eindruck. Das bestätigte sich auch im Vergleich etwa mit dem Baader 2" ClickLock Zenitspiegel und dem Baader 2" BBHS Zenitprisma.
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G. Rauscher 302/10/2017 30/10/201708:59
  • Rating:
Baader T-2-90
Das Amici-Prisma hat bei einem ersten Test einen guten Eindruck gemacht, auch bei höheren Vergrößerungen.
Ein Vergleich mit dem Baader 2" BBHS Zentiitprisma und dem 2" Baader ClickLock Zenitspiegel zeigte keine Nachteile.
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Mike 63/03/2017 05/03/201705:25
  • Rating:
Very impressive performance!
Most impressive performance; the premium choice for observing in correct orientation, with the build quality and all the modular advantages of the Baader T-2 system.
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