Looks as if could have fungus on inside of lens - Discussions - Scopes / Whole setups - Stargazers Lounge
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Celestron Lens Pen Optics Cleaning Tool
EYLIN Lens Cleaning Pen with Brush for DSLR Camera, VR Headset, Drone, Telescope, Microscope Lenses Clean : Buy Online at Best Price in KSA - Souq is now Amazon.sa: Electronics
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How to Clean Your Telescope Optics the Right Way | Sky & Telescope - Sky & Telescope
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How to Clean Your Telescope Optics the Right Way | Sky & Telescope - Sky & Telescope
How to take care of your telescope - BBC Sky at Night Magazine
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Weasner's ETX Site Miscellaneous Reviews
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How to Clean a Telescope Mirror: The Ultimate Guide - AstroImagery.
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saxon Optical Lens Cleaning Kit - Optics Central
I can't get these lenses clean no matter what I do : r/telescopes
