This product is a UVFS Protected Aluminium Spherical Plano-Concave Mirror, available from EKSMA Optics. It is a curved mirror with a concave base shape and a circular geometry. The mirror has a diameter of 50.8 mm and a thickness edge of 10 mm. The effective focal length (EFL) of this mirror is -250 mm, and the radius of curvature (R1) is -500 mm.
The mirror is made of UVFS material, specifically UVFS Mal- 1965, and is designed to operate at a wavelength of 300 nm. The front surface of the mirror is coated with EKS 0015protal 3000, providing a high-quality reflective surface.
This mirror is a part of EKSMA Optics' extensive catalog of metallic mirrors, which includes a variety of shapes, sizes, and materials to suit different optical needs. According to the vendor, this particular mirror is in stock and available for immediate purchase through their website.