saxon Colour Planetary Filter No. 23A – 1.25″
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The Saxon Colour Planetary Filter No. 23A – 1.25″ is a light red astronomy filter that is popular for viewing Mars, Jupier and Saturn. This is due to the lower light transmission (25%) of the filter. It is best utilised on a telescope with an aperture over 130mm. Can be used for daylight observation of Mercury and Venus as well, improving the contrast between these planets and the pale blue sky.
|Dimensions||10 × 10 × 10 cm|