- New
The complete workshop arsenal for your ZWO Seestar S50: permanent optical protection, surgical f/5 focus, and Carbon PETG spikes.
Protective lens cap, dedicated f/5 Bahtinov mask & 4/6-vane Carbon PETG spike masks + storage box
To counter flimsy generic PLA prints sold at inflated prices on generic marketplaces, I developed this Complete 4-Piece Pack to establish an uncompromising mechanical and optical standard for the original ZWO Seestar S50. It combines the four essential tools to protect your hardware, lock in razor-sharp manual focus, and add dramatic visual presence to your astrophotography—offered direct from my workshop at €19.90.
🛡️ 1. Front Protective Dust Cap3D printed in technical black PETG. Shields the 50 mm doublet from nocturnal dew, airborne dust, and fingerprint smudges. Its flush contour allows the telescope arm to auto-park and slide directly into the factory carrying case without removal. |
🎯 2. Dedicated f/5 Bahtinov MaskOptical slit pattern computed strictly around the true Bahtinov factor for the 250 mm focal length at f/5. Yields needle-sharp diffraction spikes on screen, locking focus manually in under 30 seconds even on moderate guide stars. |
✨ 3. Diffraction Spike Duo (4 & 6 Vanes)3D printed in Carbon-Fiber reinforced PETG (PETG-CF). The 4-spike mask replicates classic reflector geometry, while the 6-spike mask adds dynamic asterisms across open clusters and emission nebulae. |
📦 4. Compact Protective BoxA slim, rigid storage box designed to keep unused diffraction masks safe from pressure, bending, and grit inside your field gear bag. |
| Component | Material Used | Optical / Mechanical Function | Seestar Auto-Park Clearance |
|---|---|---|---|
| Front Lens Cap | High-density black PETG | Physical barrier & dust seal | 100% Free (Park & Case) |
| Bahtinov Mask | High-density black PETG | Computed manual focus (f/5 Bahtinov factor) | 100% Free (Park & Case) |
| 4-Spike Mask | PETG-CF (Carbon-Fiber reinforced) | 4-ray diffraction (Newton / Hubble aesthetic) | 100% Free (Park & Case) |
| 6-Spike Mask | PETG-CF (Carbon-Fiber reinforced) | 6-ray diffraction (Brilliant starburst pattern) | 100% Free (Park & Case) |
| Storage Box | Rigid compact cardboard | Safe transport for delicate thin vanes | Pocket / field bag format |
Unlike loose third-party prints that drag against the body or scratch painted plastics, every accessory features a calibrated snap-fit tolerance tuned to fractions of a millimeter. The native arm rotation clearances remain completely unhindered: at the end of automated nocturnal runs, the arm swings closed without motor drag, and the Seestar docks directly into its factory carrying case.
💡 The craftsman's word: "Every tool has its honest price. This kit brings together clean mechanical parts without magnets or redundant hardware, but 3D printed in my Cannes workshop with engineering polymers (PETG and Carbon-Fiber PETG). Offering a complete, durable, and precise 4-piece set with its protective case for €19.90 is the true definition of craftsmanship by an astronomer, for astronomers."
— Vincent, Founder of Azur3dprint
Every tool has its honest price. This pack brings together clean mechanical parts without magnets or redundant hardware, but 3D printed with demanding engineering materials (PETG and Carbon-Fiber PETG). I believe €19.90 for a complete, durable set tuned to the tenth of a millimeter with its protective box is a fair price for honest craftsmanship. Accessible pricing does not mean cheap quality: it is built by an astronomer, for astronomers.
Zero mechanical risk. I designed all four parts with an ultra-slim profile respecting original mechanical clearances. The arm performs its full rotation and locks into resting position without touching the body, completely protecting drive motors and gears.
Diffraction vanes must remain ultra-thin to prevent optical obstruction while retaining geometric straightness. Standard PLA bends and warps under moisture or heat. Carbon-Fiber reinforced PETG delivers structural rigidity: vanes remain straight, producing clean, sharp spikes without ghosting.
Yes. The outer diameter and flush contour allow the official case to close without indenting the protective foam. Unused masks remain safe inside the supplied compact box.
No. This pack is calibrated strictly for the dimensions and front lens of the original Seestar S50 (first model). The Seestar S50 Pro features dedicated hardware built around its specific geometry.