4.2mm Filter Slider Adapter

Ontario Telescope and Accessories Verified independent store

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This adapter adds 4.2mm to your Starizona Filter Slider making it 21.7mm in total length, compensating for the .7mm that a standard Filter adds to your backfocus. This should be us ed to replace a 21mm ZWOT-to-T adapter with the Starizona Filter Slider . Show more