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UV-IR Block & Luminance Filters

 
 

Astronomik Luminance filters come in three different levels. L1 filters, like the Astronomik L-1 UV-IR Blocking 2" Mounted Filter, are useful for reflecting telescopes or very well corrected APO Triplet refractors that do not exhibit any chromatic aberrations. While the L2 filters, like the Astronomik L-2 UV-IR Blocking 2" Mounted Filter, would be better suited for telescopes like ED doublets that are fairly well corrected but exhibit subtle amounts of chromatic aberration. The L3 filters, like the Astronomik L-3 Luminance UV-IR Block T-Mount Filter, would be great for a doublet refractor that displays chromatic aberration in the blue and violet region.

IR cut filters, like the Astronomik IR Blocking 1.25” Filter, are extremely useful for planetary imaging cameras. This filter easily threads onto the end of the camera’s 1.25” nose piece before being inserted into a Barlow Lens.