ZWO Seestar S30

Weight and portability

The 1.65 kg weight, according to the maker, places the Seestar S30 among the lighter telescopes compared when carried out, with the tripod excluded from that portability comparison. For a garden setup, this figure keeps the instrument's carry weight modest, while the stated comparison concerns the telescope rather than its tripod.

Portability: The Seestar S30 sits ahead of most of the telescopes compared for weight carried out (based on its 1.65 kg weight, with the tripod excluded).

Optics and light grasp

The 30 mm (1.2 in) aperture makes this a small-aperture refractor, with a correspondingly limited light grasp relative to most of the telescopes compared.

Light grasp: The Seestar S30 falls behind most of the telescopes compared (based on its 30 mm aperture and the stated aperture comparison).

The 150 mm focal length and f/5 focal ratio describe the optical setup. Together, these figures give your app-controlled telescope a short focal length, while the 30 mm aperture remains the central limit on light collection in this comparison.

See it at Seestar (ZWO)ZWO Seestar S30, £419, Typical UK retail price, 23 October 2026

Sensor and control

The Sony IMX662 telephoto sensor is the named image sensor, paired with the refractor's 150 mm focal length. The sensor model identifies the camera component, while the focal length describes the optics in front of it; neither figure on its own specifies image resolution or an observing outcome.

The Seestar app controls the smart telescope, combining the refractor and built-in camera sensor in an app-controlled instrument. For your garden setup, that means the telescope's imaging system is operated through the named app rather than described as a separate eyepiece-based arrangement.

Storage and power

The 64 GB internal storage provides the stated capacity for keeping data on the instrument.

The 6000 mAh battery capacity is the maker's stated power figure. Capacity in mAh does not give a battery-life duration, so it is best read as a capacity value rather than a prediction of how long the telescope can run during a session.

Comparison summary

The Seestar S30 pairs a 30 mm refractor with a 150 mm focal length, f/5 focal ratio and Sony IMX662 telephoto sensor. Its 1.65 kg weight is the defining portability figure in the comparison, while the small aperture places its light grasp behind most of the telescopes compared. The 64 GB storage and 6000 mAh battery capacity round out the published figures for an app-controlled setup in your garden.