Astromania 1.25" H-Alpha Night Sky Telescope Filter Document Scanners Designed to disperse impact and

Designed to disperse impact and prevent scratches

35Mm Quarter Inch

This cross screen filter enhances images by reducing unwanted reflections and boosting contrast

and remaining battery life at a glance

Easy Start: Equipped with both recoil and electric start options

Astromania 1.25" H-Alpha Night Sky Telescope Filter Document Scanners Designed to disperse impact andThe Astromania 1. 25" H Alpha Night Sky Filter is a long pass filter designed to enhance astronomical observations. It has a 50% transition from blocking to passing at about 640nm, with 80% or above transmittance at wavelengths longer than 650nm. This filter is ideal for extreme anti light pollution applications and for contrast enhancement of emission nebulae and other astronomical objects bright in the infrared. It threads into the nose piece of