ZWO 2" H-Alpha 7nm Narrowband Filter - Ha7nmD2 2" Newtonian Erect Image faster focal ratio

faster focal ratio

A modern Barlow will not degrade your telescope''s optics

but if you have an especially large phone case with built-in batteries or a folio-style case

3 pounds (2

Lunt Product Number: PF-1

ZWO 2" H-Alpha 7nm Narrowband Filter - Ha7nmD2 2" Newtonian Erect Image faster focal ratioThe 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