Achromatic objective lens devised for self-made refractive telescopes, ensuring clear and sharp images.
Features a 40mm actual diameter and a 205mm focal length, perfect for amateur astronomers and telescope enthusiasts.
Coated with an adhesive blue film for enhanced light transmission and reduced glare, improving your stargazing experience.
Easy to assemble with clear instructions; simply align the thin side of the lens towards the scene for optimal performance.
Compatible with various DIY telescope models, making it a versatile addition to your astronomy toolkit.
Description
Assembly precautions: Assembly direction, the thin side of the lens towards the direction of the scene and the thick lens towards the direction of the mirror tube.
1 Pcs/Package