*Designed to improve the visibility of deep sky objects by blocking mercury vapor, sodium vapor and other emission lines from chemical or natural sources that contribute to the moon's filter
*Works well on telescopes of all apertures, but it is highly recommended for use in telescopes, where conventional filters swallow too much light
*The filter fits all standard 1.25-inch glasses parts and accessories
*Can be threaded on both sides to stack with other filters if necessary
*Can be mounted in a very well anodized housing
*Comes with a sturdy plastic case to protect the eye from dust and moisture
*Lens Material: Optical Glass
*Frame Material: Aluminium Alloy
*Lens Color: Light Purple(As Pictures Show)
*Screw Thread: Metric Thread M28 * 0.6mm
*Interface: 31.7mm/1.25 inch(Approx.)
Note: The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
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Filed under: Eyepieces & Accessories