ZWO 2" H-Alpha 7nm Narrowband Filter - Ha7nmD2 2" Newtonian Erect Image SmartEye transforms any telescope into

SmartEye transforms any telescope into a powerful instrument capable of piercing through urban glare

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the most significant transformations in amateur astronomy have been in optics and technology

Threads onto the rear cell of the telescope

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ZWO 2" H-Alpha 7nm Narrowband Filter - Ha7nmD2 2" Newtonian Erect Image SmartEye transforms any telescope intoThe 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 2" threaded metal cell and can be used in 2" filter wheels or the