You can lower the profile of your 1.25" eyepiece another 0.5" below the drawtube. The ultra low eyepiece adapter works with any 2.0" focuser. The 1.25" eyepiece position is inset down into the adapter, dropping the eyepiece height 0.5". This allows another 0.5" of focus travel and optimization of the secondary mirror size. The top internal diameter is 1.9" (48.2mm). Anodized aluminum, threaded for 48mm filters with compression ring. Supplied with hex key to tighten compression ring.
