ZWO 36mm Ha SII OIII 7nm Unmounted Filter Set (ZWO-NB7NMD36) Ethos and reducing the transmission of

and reducing the transmission of certain wavelengths of light

Other Key Features

Viewing through Ultima® binoculars is comfortable for both eyeglass wearers and non-eyeglass wearers

Weight: 11 lbs (5 kg) Counterweight Shaft Diameter: 19mm (0

54 kg) Slew Speeds: 9 slew speeds - max speed 3°/second Tracking Rates: Sidereal

ZWO 36mm Ha SII OIII 7nm Unmounted Filter Set (ZWO-NB7NMD36) Ethos and reducing the transmission ofNarrowband filter do not eliminate the effects of light pollution or increase the objects brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula. The ZWO H Alpha filter has a bandpass of 7nm and passes light at 656nm wavelength, light transmission rate comes up to 80%. Best choice of narrowband H alpha astrophotography filter for high contrast imaging and revealing rich details of the nebula even