ZWO 36mm Ha SII OIII 7nm Unmounted Filter Set (ZWO-NB7NMD36) Ethos About coating: the interference filter

About coating: the interference filter will show different colours under different light

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

Introduced at the 2007 Northeast Astronomy Forum

The dense foam protects eyepieces from shock and holds the case rigid

ZWO 36mm Ha SII OIII 7nm Unmounted Filter Set (ZWO-NB7NMD36) Ethos About coating: the interference filterNarrowband 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