Optolong 3nm L-Ultimate Filter - 2" Baader Drive system: Microstep electric drive

Drive system: Microstep electric drive by stepping motor

It will be compatible with the iOptron iEQ45 / CEM60 and the ZEQ25 / CEM25 models of tripods/Mount heads (the #8021ACC tripod and the #7122 tripod)

Baader''s DSLR conversion filters replace the factory correcting filter ("hot mirror")

until the image is sharp

Optolong 3nm L-Ultimate Filter - 2" Baader Drive system: Microstep electric driveThe Optolong L Ultimate 3nm dual band filter is designed to drastically reduce the effects of light pollution. The 3nm isolates the nebulae's emissions into H Alpha (red) and OIII (green blue). It blocks light pollution, maximizes the signal from nebulae, and darkens the sky background. It also blocks artificial light from mercury vapor lamps, high and low pressure sodium vapor lights, and unwanted natural light caused by the emission of neutral