ubique
29-08-2023, 03:21 PM
William Optics 2" 90-deg Erecting Prism Diagonal
This diagonal is in excellent condition, it is an erecting prism that can be used for astronomical use, it uses a prism not a mirror. The prisms are joined and the join line is not visible in use.
Manufacturer Description
This new 2" 90 deg. erecting prism by William Optics is our reply to your needs! High quality prism, coating and finish, for good correct-image views of celestial objects. Perfect for daytime observations. Will turn your refractor into a 24/7 friend! This prism is particularly suitable for astronomical usage.
Precision Prism
• Image erecting BaK4 prism with anti-reflection coating.
• Fully multi-coated.
• Minimized light loss and high accuracy to make possible critical night-time observations.
Superior Craftsmanship
• Internally matte blackened and threaded for no internal stray light reflection.
• Threaded for 2" filters.
Ready to Go
• 1.25" adapter with brass compression ring included in the price.
• Large, chromed thumbscrews.
Beautiful Finish
• Entirely aluminum, black anodized.
• Silver sandblast finish with William Optics logo laser engraved.
Features
• Prism: High quality BAK4 with new FMC coating
• Materials: Entirely machined aluminum
• Angle: 90 degree
• Prism clear aperture: 40mm
• 2"-1.25" adapter with brass compression rings
• Weight: 560g
$200 Posted
PM me if you are interested
This diagonal is in excellent condition, it is an erecting prism that can be used for astronomical use, it uses a prism not a mirror. The prisms are joined and the join line is not visible in use.
Manufacturer Description
This new 2" 90 deg. erecting prism by William Optics is our reply to your needs! High quality prism, coating and finish, for good correct-image views of celestial objects. Perfect for daytime observations. Will turn your refractor into a 24/7 friend! This prism is particularly suitable for astronomical usage.
Precision Prism
• Image erecting BaK4 prism with anti-reflection coating.
• Fully multi-coated.
• Minimized light loss and high accuracy to make possible critical night-time observations.
Superior Craftsmanship
• Internally matte blackened and threaded for no internal stray light reflection.
• Threaded for 2" filters.
Ready to Go
• 1.25" adapter with brass compression ring included in the price.
• Large, chromed thumbscrews.
Beautiful Finish
• Entirely aluminum, black anodized.
• Silver sandblast finish with William Optics logo laser engraved.
Features
• Prism: High quality BAK4 with new FMC coating
• Materials: Entirely machined aluminum
• Angle: 90 degree
• Prism clear aperture: 40mm
• 2"-1.25" adapter with brass compression rings
• Weight: 560g
$200 Posted
PM me if you are interested