Lumicon 2" diameter × 2" length — Thread-In Eyepiece Extension Tube Color Filter This handle is part of

This handle is part of the FDA family — every member shares the same quick-release base

CXB (formerly Astrodon) Narrowband filters for imaging are all about contrast

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with the camera following where the bar points

Lumicon 2" diameter × 2" length — Thread-In Eyepiece Extension Tube Color Filter This handle is part ofLumicon 2" Thread In Extension Adds 2" of back focus so your eyepiece or camera can reach sharp focus. The Lumicon 2" diameter 2" length Thread In Eyepiece Extension Tube threads into a 2" eyepiece to add up to 2" of focus extension. A compact spacer for fine tuning where your eyepiece sits in the focal path. The larger 2" clear aperture suits wide field eyepieces and large sensor imaging, where it reduces vignetting compared with a 1. 25" light path.