BBHS broad band hard silver coating: Delivers 99% reflectivity across a 390–2000 nm bandpass for superior image quality
Zero expansion Sitall mirror: Maintains precise shape and stability for sharp, distortion-free images
CNC-machined aluminum housing: Ensures durability and thermal equilibrium for long-term performance
Adjustable cradle and 3-point alignment: Allows precise collimation and easy setup for custom telescopes
2-inch Clicklock clamp: Provides secure, tilt-free attachment for heavy eyepieces and accessories
Summarized by Shop
The Baader 2" Clicklock BHHS Adjustable Mirror Diagonal is the highest quality 90° mirror-type star diagonal available.
Utilizing Sitall zero expansion glass-ceramic for the mirror and with Baader's exclusive Broad Band Hard Silver coating, this diagonal has 99% reflectivity across a staggering 390 - 2000nm spectral bandpass. This exten
Mirror Type
90 mm diameter, Sitall zero expansion glass ceramic
Coating
BBHS broad band hard silver, dielectrically protected
Image Orientation
Erect (mirror inverted)
Optical Length
112 mm
Deflection Angle
90 degrees
Clear Aperture
47 mm
Eyepiece Side Connection
2-inch M55 thread
Telescope Side Connection
2-inch barrel with M48 x 0.75 female thread, M55 S58 dovetail