Optolong L-eXtreme Dual-Band Narrow Band Filter 1.25" Mounted (OPT-L-EXTREME-125) SII aiding the mount in providing

aiding the mount in providing precise tracking

Simplify and streamline your setup with the Aluminum Dew Shield’s integrated cable management slot at the base

The ZWO H-Alpha filter has a bandpass of 7nm and passes light at 656nm wavelength

73° Linear Field of View (@1000 yds) / @1000 m): 89 ft (27 m) @ 18x| 38 ft (11

without sacrificing resolution

Optolong L-eXtreme Dual-Band Narrow Band Filter 1.25" Mounted (OPT-L-EXTREME-125) SII aiding the mount in providingUnlike the Optolong L eNhance filter which is a tri band (transmits Hb, Ha, and OIII), the L eXtreme filter is dual band that passes Ha and OIII emission lines. Main Usage L eXtreme is a two 7nm bandpass filter which can be used with one shot colour cameras like DSLR's (digital SLR), and monochrome CCD cameras, it is also more suited for fast systems. The convenience and cost effectiveness of this filter allows amateurs to image a rich emission