Lumicon 2" diameter × 1.5" length — Drop-In Eyepiece Extension Tube Visual Adapter where the sensor would otherwise

where the sensor would otherwise sit too close to the focal plane

Use it whenever a device in your optical train terminates in a male T-thread — a filter selector

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bolt them to this bar and you've built the same two-telescope rig for a fraction of the cost

Lumicon 2" diameter × 1.5" length — Drop-In Eyepiece Extension Tube Visual Adapter where the sensor would otherwiseLumicon 2" Drop In Extension Adds 1. 5" of back focus so your eyepiece or camera can reach sharp focus. The Lumicon 2" diameter 1. 5" length Drop In Eyepiece Extension Tube drops into a 2" focuser or diagonal and accepts a 2" eyepiece on top, pushing the eyepiece back by roughly 1. 5". The larger 2" clear aperture suits wide field eyepieces and large sensor imaging, where it reduces vignetting compared with a 1. 25" light path. Specifications Barrel