ZWO 1.25" H-Alpha 7nm Narrowband Filter - Ha7nm125 30 mm Binoculars 3 g) Dimensions: 139

3 g) Dimensions: 139

The telescope features a premium 3” dual-speed 10:1 rack-and-pinion focuser with 58mm of travel

This makes the mount even more sturdy and keeps the legs in their proper position

It is lightweight (3

ZWO 1.25" H-Alpha 7nm Narrowband Filter - Ha7nm125 30 mm Binoculars 3 g) Dimensions: 139The ZWO H Alpha filter has a bandpass of 7nm and passes light at the 656nm wavelength, with a light transmission rate of up to 80%. This is the best choice for a narrowband H alpha astrophotography filter if you are doing high contrast imaging and want to reveal rich details of the nebula even in areas with strong light pollution. This rendition of the ZWO Ha 7nm Filter is housed in a 1. 25" threaded metal cell and can be used in 1. 25" filter wheels