Comparison

Seestar S50 vs Seestar S30 Pro

Seestar S30 Pro has the wider field (3.99° × 2.24° vs 1.29° × 0.73°), so it frames large targets such as the Andromeda Galaxy more easily; Seestar S50 shows smaller objects at a larger scale. Of our 20 popular targets, Seestar S50 frames 9 well and Seestar S30 Pro 9.

SpecSeestar S50Seestar S30 Pro
Aperture50 mm30 mm
Focal length250 mm160 mm
Native field of view1.29° × 0.73°3.99° × 2.24°
Targets framed well9 / 209 / 20
Weight2.5 kg1.65 kg
Wide-angle cameraNot listedYes
Mosaic modeNot listedNot listed
Official price$549$699

Both frames on the same targets

Solid gold: Seestar S50. Dashed blue: Seestar S30 Pro.

M31 · 190′ × 60′
M31 Andromeda Galaxy: Seestar S50 larger than the frame; Seestar S30 Pro larger than the frame.
M42 · 66′ × 60′
M42 Orion Nebula: Seestar S50 larger than the frame; Seestar S30 Pro fits well.
M51 · 11′ × 8′
M51 Whirlpool Galaxy: Seestar S50 fits well; Seestar S30 Pro small in the frame.

Where they differ

TargetSeestar S50Seestar S30 Pro
M42 Orion Nebulalarger than the framefits well
M45 Pleiadeslarger than the framefits well
M33 Triangulum Galaxylarger than the framefits well
M51 Whirlpool Galaxyfits wellsmall in the frame
M82 Cigar Galaxyfits wellsmall in the frame
M13 Hercules Clusterfits wellsmall in the frame
M8 Lagoon Nebulalarger than the framefits well
M17 Omega Nebulalarger than the framefits well
M44 Beehive Clusterlarger than the framefits well
M63 Sunflower Galaxyfits wellsmall in the frame
M64 Black Eye Galaxyfits wellsmall in the frame
M104 Sombrero Galaxyfits wellsmall in the frame

Where to buy the Seestar S50

Where to buy the Seestar S30 Pro

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Test both against your own sky

Questions and answers

Which is better for large targets, the Seestar S50 or the Seestar S30 Pro?
The Seestar S30 Pro, because it has the wider field of view.
Which frames more popular targets well?
Both frame 9 of our 20 popular targets well.
Which is cheaper?
The Seestar S50, at an official price of $549.
Which is lighter?
The Seestar S30 Pro, at about 1.65 kg.

Specs from manufacturer pages, checked 2026-10-12. Fit labels follow the rule on the page.