Baader T-2/90° Amici-Roof-Prism with BBHS ® coating
- 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.
This T-2/90° Baader Roof-Prism with BBHS® coating is a 90° fold Star Diagonal for general purpose telescope use. It is made to the highest quality standards with Zeiss glass. It is an Erecting-style, Roof Prism optical design, and the prism is multicoated on both sides.
BBHS® reflection coatings on this T-2/90° Baader Roof-Prism predominantly are being utilised on our highest quality grade 2" BBHS® Sitall Stardiagonals (#2456115 – incl. black housing and 2" ClickLock clamp) as well as on the BBHS® T-2 Sitall Stardiagonal (#2456103) - where the housing features a male and female T-2 thread - for shortening the optical path with bino use, and to offer the utmost in adaptation variability as well as much more light throughput than with any conventional 1 1/4" star diagonal.
BBHS® stands for Broad Band Hard Silver. When applied onto our Sitall (zero expansion glass-ceramics) substrates, these multiple deposited layers of hard silver are being sealed by a set of dielectric layers to achieve long term durability. With this advance in coating technology our BBHS® coating lifetime equals that of a high quality AlSiO2 coating, matching the durability of standard aluminium coated diagonals (and telescope mirrors) which have been in wide use for many years. The BBHS® spectral bandpass is much wider than that of aluminum and therefore, light transmission is improved.
|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|
|AR-COATING||Phantom Coating® Group|
|IMAGE ORIENTATION||Erect image, Non-reversed|
|OPTICAL TUBE LENGTH||47.5|
|CLAMPING SYSTEM||no clamp|
|INNER DIAMETER / CLEAR APERTURE (MM)||31|