Levenhuk Ra O-III 1.25'' Filter
Filter for nebulae observations. Barrel diameter: 1.25'' If you don't have the time or opportunity to leave the city to observe a perfectly clear night sky in the countryside - don't worry - Levenhuk Ra O-III 1.25'' Filter is ideal for observation under urban illumination conditions. This filter enhances contrast and reduces light pollution. It's a great accessory for observations of nebulae due to its capability to suppress all light that lies outside its 4900-5010 Å (490-501 nm) passband. This filter can be used for astrophotography as well. Levenhuk Ra O-III 1.25'' Filter has a standart barrel diameter so you can use it with a telescope of any brand. Note that this filter gives a green tint to observed objects.