This premium achromatic doublet lens is a sophisticated optical component designed for high-performance telescope objectives. With its impressive 100mm diameter and 1200mm focal length, this air-spaced lens delivers exceptional image quality and minimal chromatic aberration. The precision-engineered air gap between lens elements helps maintain optimal optical performance across varying temperature conditions. The lens features high-quality glass elements housed in a durable black anodized mounting ring, making it ideal for serious astronomical observations and professional imaging applications. Perfect for custom telescope builds or upgrading existing optical systems, this objective lens provides excellent light gathering capability and sharp, clear images. The robust construction ensures stability and maintains precise alignment of the optical elements for consistent performance.