Optolong L-eXtreme Dual Band 1.25 Nebula Filter 20366 Optical Tube Info:

Optical Tube Info:

Storage Relative Humidity: 20%—95%

and even comet hunting

greatly increasing battery life

EN 1836:2005 + A1:2007 (E) for an E15 Filter for the Direct Observation of the Sun and

Optolong L-eXtreme Dual Band 1.25 Nebula Filter 20366 Optical Tube Info:Optolong L eXtreme Dual Band 1. 25 Nebula Filter Features 1. 25" low profile filter cell suitable for filter drawers, filter wheels with 1,25" filter thread The filter has a very narrow bandwidth of only 7 nm for O III and H Alpha and provides a very high contrast The areas of light pollution are completely blocked, so successful deep sky photography is also possible from close to the city The filter is suitable for mono and color cameras H Alpha