Askar ColourMagic Ultra 2" Duo-Band E2 Filter - SII + OIII - CM-DUO-E2 vendor-bresser 5 " (1790 mm) Maximum

5 " (1790 mm) Maximum Height (with center column down) 58" (1475 mm) Minimum Height 18

The ZWO ASI991 SWIR operates in the 400nm to 1800 um wavelength

more details in celestial objects: This filter cuts out background light and noise beyond the target objects to get better details and contrast in your images

Celestron Spotting Scope''s highly acclaimed Ultima Series is more versatile than ever

Coatings: Dielectric & Anti-Reflection

Askar ColourMagic Ultra 2" Duo-Band E2 Filter - SII + OIII - CM-DUO-E2 vendor-bresser 5 " (1790 mm) MaximumDesigned for deep sky imaging with color astro cameras, the Askar ColourMagic Ultra E2 filter, as the name suggests, includes "Ultra" halo control capability. When shooting deep sky galaxies with colour cameras, a duo narrowband filter in the H and O bands is often used; whereas with a mono camera, a narrowband filter in the H, S and O bands is often used, leaving users with colour cameras missing one band of nebula detail. This can be compensated by