Levenhuk Ra UHC 1.25 Inch FilterItem#: HN-LEVE058
This filter was designed for observations of dim and low-contrast deep-sky objects. The passband includes the Hß wavelength (4861) and the OIII doublet (4959 and 5007). Some planetary and emission nebulae are emitting up to 90% visible light in this range. This filter, therefore, enhances the contrast of nebulae details from 2–5% to 10–50%. This filter has a barrel diameter of 1.25" and can be mounted on the eyepiece of your OTA.
Dimensions & Specifications
Telescope Accessories Series
Levenhuk Telescope Accessories