Back Focus Spacer Rings Kit For M48 Threads 0.5mm 0.8mm 1.0mm Three Pack, Precision Aluminum Telescope Spacers For Astrophotography, Field Flatteners, Sharper Stars, Eliminates Edge Coma
✔️ 0.5mm, 0.8mm, 1.0mm aluminum spacers for precise back focus
This precision spacer set includes three thicknesses (0.5mm, 0.8mm, and 1.0mm) to fine-tune back focus on M48 threaded systems. It’s ideal for astrophotography workflows using field flatteners, reducers, and filter wheels to sharpen stars and reduce edge coma.
✅ Three thicknesses: 0.5mm, 0.8mm, 1.0mm for flexible spacing
✅ Smooth M48 x 0.75 threads prevent cross-threading and ensure secure connection
✅ Ultra-slim profile down to 0.5mm for minimal stacking height
✅ Matte black anodized finish absorbs stray light and reduces reflections
💡 What is a back focus spacer kit for M48 threads, and why does it matter for astrophotography? Handy accessory to dial in exact spacing between sensor and field flattener for pinpoint stars.
- back focus adjustment options 0.5mm, 0.8mm, 1.0mm
- compatible with most M48 focusers, flatteners, reducers, filter wheels
- lightweight aluminum with matte black finish to reduce stray light
- improves edge coma control for sharper deep-sky images