BAADER OIII VISUAL FILTER 2" telescope - M48 thread for most

- M48 thread for most of the cameras with medium-large sensor as well as filter wheels and off-axis guiders

8" and a resolution of 8

W63 by José Jiménez | Optolong L-Ultimate

ATIK EFW filter wheels

Knobs for altitude bearing x 4

BAADER OIII VISUAL FILTER 2" telescope - M48 thread for mostThe Baader OIII Visual filter is a 10nm visual narrowband filter designed to accentuate the contrast of emission and planetary nebulae. The high transmission at the Oxygen III line (502nm) results in a bright, contrasty image in telescopes with an aperture of 6" and larger. The optical surface is fine optically polished so that there is no loss of sharpness at high magnifications, even when the filter is positioned far in front of the focal point.