Universal Optical System Integration: Seamlessly adapts 1.25" eyepieces for use with all 2" telescope focusers; star diagonals; and eyepiece holders; This adapter maintains optical precision while enabling cross-compatibility between different accessory standards; expanding your telescope's capabilities without compromising performance
Precision Engineered Aluminum Construction: Crafted from CNC-machined anodized aluminum with advanced surface treatment; Features precisely calibrated filter threads (2" and M48×0.75 compatible) and anti-reflective matte finishing to ensure optimal light transmission and protection for your optical system
Advanced Dual Security Locking Mechanism: Incorporates a brass compression ring for scratch-free eyepiece retention and an oversized knurled thumbscrew for secure tightening; The system ensures reliable operation even when observing with gloves in cold conditions
Improve Focusing Problem: The extension tube has a M48x0.75 interior thread and a M48x0.75 exterior thread; elegantly solves the spacing problems in astrophotography and improve a series of focusing problems
Variable Combination: The required spacing can be achieved by combining several extenders of differing lengths; Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners
-12%
Alstar 2-Inch 50MM Telescope Eyepiece Extension Tube Adapter - Bundle with - 2 inch ED 2X Barlow Lens
SAR 418
Alstar 1.25" 58 Degree 9mm Telescope Eyepiece - Bundle with - Universal Dovetail Base
SAR 308
Alstar 8-24mm Telescope Zoom Eyepiece - Bundle with - 8 Piece Eyepiece & Filter Accessory Kit
SAR 491
Alstar 8 Piece Eyepiece & Filter Accessory Kit - Bundle with - Red Dot Finderscope
SAR 286
