Imatest Stray Light ND Filter Kit

This kit includes a 50mm filter mount and an optional 2.5 Optical Density reflective ND filter with uniform reflectivity across 190nm – 1,700 nm. The stand provides a way to slide filters in and out of place. A ND filter can be used to attenuate light, allowing one to more easily capture or inspect an unsaturated image of the source. BTS Stray Light ND KIT Features Allows for easily sliding filters in and out of place on the BTS. Accommodates other optics mounted within the included 50mm ring mount or within the M4 slot. ND Filter: features excellent parallelism and surface characteristics to provide constant, ultra-broadband performance from 190 – 1700nm. Miniature tip-tilt stage to ensure proper filter-to-light source alignment   Specifications  Details Weight:  2 Kg (4.5 lbs) Dimensions:  197 x 375 x 315-460 mm (7.75” x 14.75” x 12.4-18.1″) Mounting Options: Designed for versatile placement over BTS Filter Mounting Options: 50mm ring mount and M4 clearance slot 100mm long   ND Filter Specifications  Details Neutral Density Filter: 2.5 OD UV-NIR Reflective ND Filter Blocking Wavelength Range: 190 – 1700nm Diameter: 50mm Thickness: 5.00mm ±0.10 Clear Aperture: 80% Substrate: Fused Silica (Corning 7980) Coating: Metallic Based ND Surface Quality: 40-20 Scratch-Dig Transmission: 0.3% Transmitted Wavefront, P-V: λ/4 Parallelism: <5 arcsec