Pro Grade Spacer Ring Set For Astro Imaging M42x0.75 Threads 1.25 Inch Kit With Six Spacers 3,5,7,15,20,30mm Built For Easy Stacking And Fine Tune T2 Backfocus On Astro Cameras OAGs And Filter Trains Ideal For Deep Sky Imaging
✔️ Six M42x0.75 spacers: 3/5/7/15/20/30 mm for flexible backfocus
A compact CNC aluminum spacer set designed for 1.25" (31.75 mm) astro imaging trains, guide cameras, OAGs, and filter stacks. Each ring uses M42x0.75 male-to-female threads on both sides for quick, secure stacking with T2/M42 accessories. Note: Not M48.
✅ Six extension rings: 3 mm, 5 mm, 7 mm, 15 mm, 20 mm, 30 mm, stackable for 3-80 mm total spacing
✅ M42x0.75 male on one side and female on the other for true T2/M42 compatibility
✅ Designed for 1.25" systems to fit compact astro cameras and guide cams
✅ CNC aluminum with matte anodized finish for durability and smooth threading
✅ Stable, repeatable fit when changing spacing to dial in backfocus
💡 What is a backfocus spacer ring kit used for in 1.25 inch astro imaging and how does it help align a camera train? This handy kit makes fine-tuning spacing quick and repeatable. - backfocus tuning for 1.25" astro imaging using M42x0.75 spacers - secure stacking with T2/M42 threaded rings on every ring - compact, durable CNC aluminum build keeps trains aligned
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