Item was made by Full metal; The double helical focuser is M31x0.5 male thread and 1.25 inch accessory collar with M42x0.75 male T thread flange; Accesory collar thumbscrews that you can install StarShoot AutoGuider or 1.25 inch eyepiece
Upgrade your R/P focuser by adding it to the end of the R/P focuser by using Alstar M42X0.75 Female to M42X0.75 Female Thread Telescope Adapter 9 mm; Note: please make sure that there is M42X0.75 male thread on your R/P focuser
Free light transmission: 22.5 mm lens aperture; Can be used with additional spacers which is available separately to achieve further focal reduction
Mounting threads: 1.25 inch filter thread; 28.5x0.75 MM on both sides: Threads into eyepieces; camera adapters and other accessories with standard 1.25 inch threads; And can be stacked with additional 1.25 inch threaded accessories
Alstar 1.25 inch 5X 4-Element Multi-Coated Short Barlow Lens Gold Line | Apochromatic Correction, Clear and Sharp Images, Compression Ring, High-Power Magnification with ED Glass Optics
KWD 51
Alstar 1.25 inch 2X Barlow Lens with M42 Thread Telescope Accessories | MultiCoated Lens, Robust Metal Housing, Camera Connect Interface, Two Fixing Thumbscrews, Extra Focuser Back Travel
KWD 7
Alstar Guide Scope Mount - The Convenient Way to Mount Your Guide Scope
KWD 64
Alstar Telescope Helical Focuser 1.25 Inch High Precision Double Helical | With 0.05mm Scale, Precise Focusing, T2 Male Thread, Black Anodized Aluminum, for Telescope Lenses/Finder & Guidescope
KWD 20
