US prices checked on November 9, 2026 · 15 smart telescopes compared, from $399 to $4,999

Accessories · guide

Seestar accessories: what the S50, S50 Pro and S30 Pro really need

A Seestar works out of the box: telescope, filter set, app. The accessory that changes the most is the one for Equatorial Mode: ZWO's TH10 fluid tripod head ($99), sold with the TC20 carbon tripod for $189 on the Seestar US store. Everything else (power, a case, a dew strategy) depends on how and where you observe.

By the editorial team / Nora Ellis · Updated November 9, 2026

The essentials

  • Equatorial Mode is supported on the Seestar S30, S30 Pro, S50 and S50 Pro, but needs accessories and polar alignment.
  • ZWO sells the TH10 fluid tripod head at $99 and the TH10 + TC20 carbon tripod at $189 (Seestar US store, November 9, 2026).
  • On the S50 Pro, 60-second exposures are available only in Equatorial Mode, according to ZWO.
  • The solar filter is in the box (magnetic on S30, S30 Pro and S50; included with the S50 Pro).
  • Built-in filters (UV/IR cut, duo-band, dark) mean no extra filter is needed for nebulae.

What comes in the box

ZWO lists the S50 Pro package in full on its US page: the telescope, a protective case, a solar filter, a USB-C cable, a tripod, safety instructions, a quick start guide and stickers. For the S30, S30 Pro and S50, the US pages describe a magnetic solar filter as the external filter and the built-in filters (UV/IR cut, duo-band, dark), but do not list the full box contents in text. Check the listing before you order if you need a tripod on the first night.

ModelBuilt-in filtersExternal filterTripod listed
Seestar S30UV/IR cut, duo-band, darkMagnetic solar filterNot stated on the US page
Seestar S30 ProUV/IR cut, duo-band, darkMagnetic solar filterNot stated on the US page
Seestar S50UV/IR cut, duo-band, darkMagnetic solar filterNot stated on the US page
Seestar S50 ProUV/IR cut, dual-band (telephoto), dark frameMagnetic solar filterYes

Equatorial Mode: the accessory that matters

In normal (alt-azimuth) mode, a Seestar moves up-down and left-right. Over a long session the field slowly rotates, which limits exposure length and crops the edges of the final image. Equatorial Mode tilts the telescope so one axis points at the celestial pole; then a single motor follows the sky and the rotation disappears.

To tilt it properly, you need a head that can be angled and locked at your latitude. That is what ZWO's TH10 fluid tripod head is for: $99 on its own, $189 with the TC20 carbon fiber tripod, and a $9.90 3/8-inch quick-release plate that ZWO adds for free when you buy the S50 Pro and the TH10 together.

  1. Mount the Seestar on the TH10 head and level the tripod.
  2. Switch the app to Equatorial Mode and follow its polar alignment routine.
  3. Adjust the head until the app confirms alignment, then lock it.
  4. Pick your target; on the S50 Pro, 60 s exposures become available in this mode.

SafetyZWO notes that accurate polar alignment is required in Equatorial Mode; poor alignment reduces imaging performance. Take the time on the first night, it gets faster.

Power, storage and comfort

  • Battery: the S50 Pro has 10,000 mAh with up to 9 hours stated by ZWO (lab figure, alt-az mode, above 25 °C). The S30, S30 Pro and S50 have 6,000 mAh. All charge over USB-C, so a power bank can extend a long night.
  • Storage: 64 GB on the S30 and S50, 128 GB on the S30 Pro and S50 Pro (about 100 GB usable on the S50 Pro per ZWO). Export your stacks after each session if you shoot long plans.
  • Dew: the S30 Pro has active anti-dew control. On other models, a dew shield or a short session on humid nights helps.
  • A case: the S50 Pro comes with a protective case; for the others, any padded camera bag that fits the dimensions works.

Warranty and returns: what to keep

Accessories are also the moment to think about the paperwork. ZWO's US warranty policy covers the main body and camera of a Seestar for 2 years and the battery for 1 year. Its US return policy treats unopened items, opened like-new items and defective items differently.

Situation (Seestar US store)What ZWO's policy says
Opened but like-new10% restocking fee, return shipping paid by the customer
Defective on arrival or within 30 daysFull refund or replacement, no restocking or return shipping fee
After 30 daysHandled under the warranty policy

In practice: keep the outer box, inserts and manuals for at least the first month, and test every accessory on the first clear night rather than at the end of the return window. If you buy from a retailer instead of the Seestar US store, its own return policy applies.

Accessories you can skip

  • Extra light pollution filters: the duo-band filter is already built in.
  • Eyepieces and Barlow lenses: Seestar telescopes have no eyepiece port.
  • Heavy equatorial mounts: Equatorial Mode is designed around the TH10 head; a full astro mount is overkill.

TipBefore buying any third-party accessory, check ZWO's documentation for your model and keep the original packaging: opened returns at the Seestar US store cost a 10% restocking fee.

Telescopes mentioned in this guide

Frequently asked questions

Do I need an equatorial wedge for the Seestar S50?

Not to use it: it works in alt-azimuth mode. For Equatorial Mode, ZWO sells the TH10 fluid tripod head ($99), or the TH10 with the TC20 carbon tripod ($189).

What accessories does the Seestar S30 Pro need?

None to start. ZWO says Equatorial Mode needs additional accessories; its TH10 + TC20 bundle costs $189. The solar filter and built-in filters are part of the telescope.

Does the Seestar come with a solar filter?

Yes. ZWO lists a magnetic solar filter as the external filter for the S30, S30 Pro and S50, and a solar filter in the S50 Pro package.

Can I use a Seestar with a power bank?

All Seestar models charge over USB-C, so a good power bank can extend a session. Check ZWO's documentation for the power specs of your model.