Baader T-2 Stardiagonal (Zeiss) Prism with BBHS ® coating (T-2 part #01B)

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Baader T-2 Stardiagonal (Zeiss) Prism with BBHS ® coating (T-2 part #01B)

# 2456095

€ 215.00 Price excl. German VAT tax (19%): € 180.67
  • T-2/90 ° diagonal prism with 35mm free aperture terminal objective side: 2 "or 1¼"
  • Connection eyepiece: 1¼ "
  • Prism of Carl Zeiss Jena, multi-coated, solid metal case, both sides T-2 connection threads, resulting in extremely short design and adaptable to each telescope system.
  • Not just the housing is significantly better and the prism is greater, also the planarity and the conformality of the prism faces are about 5x better than standard prisms in plastic housings.

Product Questions

Hello. 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)
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Additional Information

Manufacturer Baader Planetarium
SKU (#) 2456095
Weight (kg) 0.1700
Optical Design Star Diagonal Prism
Inner Connection (lens sided) Thread, T-2 (M42 x 0,75)
Inner Connection (eyepiece sided) Thread, M34
Outer Connection (eyepiece sided) Thread, T-2 (M42 x 0,75)
Reflection surface Sealed BBHS coating
AR-Coating Phantom Coating® Group
Image Orientation Erect image, Mirror inverted
Optical tube length (mm) 38,5
Clamping System no clamp
Deflection angle 90°
Inner Diameter / Clear Aperture (mm) 34

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