Product Code: 1554639

#Events# Baader Double Polarising Filter

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Astronomical polarising filters such as this are predominantly useful in lunar observation. Lunar images can appear overly luminous, with details lost in the glare. A polarising filter will cut down the glare and sharpen contrast, allowing you to pick out more details on the lunar surface. This filter features two polarising layers; one fixed and one which can be rotated. This enables you to reduce the amount of light passing through the eyepiece to the desired level, effectively acting as a 'dimmer switch'.

Please note: For solar observation with a Herschel prism, you do not need a double polarizing filter. The reflected image of the sun from the Herschel prism is already partially polarised. If necessary please order the simple polarising filter for further light attenuation. When used with an Astro Solar film, however, you need a double pole filter to continuously further mitigate the unpolarised sunlight.

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Product Code: 1554639-wex Manufacturers Part Number: 2408340 Got a question? Get it answered...