Description 

Welcome back to Star-Cadet99 — where precision optics find their next mission.

Up for sale is a Baader Planetarium Hyperion Extension Ring, part #2958090, featuring SP54 to SP54 threading. This is a modular spacing component designed for serious astronomy setups — whether you’re dialing in focus, optimizing imaging distance, or building out a Hyperion configuration.

This isn’t just a ring — it’s part of Baader’s precision-engineered ecosystem, trusted by astrophotographers and visual observers worldwide.

 What You Get

• (1) Baader Hyperion Extension Ring – SP54 / SP54
• (2) Thin spacer/shim rings (as shown)
• Original Baader box included

 Key Features

• Precision-machined, black anodized metal
• Standard SP54 threading (both sides)
• Expands optical path length for fine tuning
• Compatible with Baader Hyperion modular systems
• Ideal for astrophotography & visual setups

 Why This Matters

If you’re building a serious optical train, spacing is everything.
This ring helps you hit focus, eliminate vignetting, and optimize performance — the difference between a decent image and a jaw-dropper.

 Shipping

• Estimated weight: 6–8 oz packed
• Ships securely with padding to protect threads
• Fast handling from Star-Cadet99