The Astronomik Luminance Filter (L-2) is a high quality UV / IR block filter suitable for most instruments except refractors with imperfect colour correction.
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This product has multiple variants. The options may be chosen on the product page
The Astronomik Luminance Filter (L-3) is a high quality UV / IR block filter designed for users of Refractors with less than perfect colour correction, especially when used with the latest cameras. In combination with Deep-Sky RGB filters it will minimise bluish halos around stars.
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This product has multiple variants. The options may be chosen on the product page