Optolong L-eXtreme Dual Band Filter - 1.25" 120 mm Telescopes When you purchase the ZWO

When you purchase the ZWO ASI585 Color Planetary Camera you will receive the camera body

zero backlash Declination worm wheel: 110 mm

Dioptrx can be rotated to exactly compensate for the astigmatic axis angle in real time

Other HEM27 models include the base version (H272

Accessory Tray

Optolong L-eXtreme Dual Band Filter - 1.25" 120 mm Telescopes When you purchase the ZWOThe L eXtreme from Optolong is a dual band filter that passes Ha and OIII emission lines. The advantage of the L eXtreme filter over the L eNhance, which is a tri band filter, is that there are no transmission between the H beta and OIII lines, as there is no nebula emission lines there. In this case, it isn't letting light pollution come through so that maximizes a nebula's signal and makes the sky background darker while imaging. The L eXtreme