ZWO SeeStar S50 Accessories

Upgrade your ZWO SeeStar S50 with accessories built for real observing and real imaging. Whether you want faster focusing, cleaner contrast, better protection for travel, or a creative star-spike look, these Seestar-specific add-ons are designed to be simple to use and deliver visible results.

Quick links: shop the most popular upgrades

• SeeStar S50 Bahtinov Focus Mask – fast, repeatable focusing
• SeeStar S50 3D Printed Dew Shield – helps reduce dew and stray light
• SeeStar S50 Dust Cover – protects the objective during storage/transport
• SeeStar S50 Spike Generators Kit – creative diffraction spikes for bright stars

Why SeeStar-specific accessories matter

The SeeStar S50 is compact and self-contained, which is exactly why “universal” parts often don’t fit the way you’d expect. Accessories designed specifically for the S50 match the front lens geometry and clearances of the system—so you get the benefit without turning a grab-and-go scope into a project.

Choose the right accessory for your goal

1) Sharper stars: start with a Bahtinov focus mask

Focus is the foundation of good results. A Bahtinov focus mask creates a clear diffraction pattern on a bright star so you can confirm best focus quickly and consistently. If your stars look slightly soft, or you want a repeatable method you can trust, this is usually the best first upgrade.

2) Better contrast: add a dew shield (dew + stray light)

In humid conditions, the front lens can cool below ambient temperature and dew can form. A dew shield helps reduce dew risk by shielding the lens from the open sky, and it can also improve contrast by blocking stray light from nearby lamps and off-axis sources.

 

 

 

 

3) Protect your optics: use a dust cover for storage and travel

The SeeStar S50 dust cover protects the objective from dust, pollen, fingerprints, and storage contamination. If your Seestar travels with you, lives in a case, or gets stored between sessions, this is a simple upgrade that keeps your lens cleaner and reduces the need for frequent cleaning.

 

4) Creative style: add diffraction spikes to bright stars

If you want a bold “space telescope” look, the Spike Generators Kit adds dramatic diffraction spikes to bright stars. It’s a fun creative tool for open clusters and wide star fields—no complicated post-processing required.

SeeStar S50 Accessories FAQ

Do these accessories fit the ZWO SeeStar S50 specifically?

Yes—this page is focused on SeeStar S50-specific accessories. Always confirm compatibility on the individual product page before ordering.

What’s the best first upgrade for most users?

For most setups, start with the Bahtinov focus mask. It improves repeatability and helps you confirm best focus quickly—often the fastest way to improve star sharpness.

Will a dew shield help in light-polluted areas?

Yes. A dew shield helps block stray light from off-axis sources (porch lights, street lights), which can improve contrast in addition to helping reduce dew risk.

Do I need special software for the spike kit?

No. The spike effect is created optically by the mask. You can still process your images normally afterward if you wish.

Need help choosing the right upgrade for your conditions and targets? Contact us and we’ll recommend the best SeeStar S50 accessories for your setup.