Comparison

Seestar S30 vs Atlas Single

Seestar S30 has the wider field (2.14° × 1.21° vs 1.78° × 1°), so it frames large targets such as the Andromeda Galaxy more easily; Atlas Single shows smaller objects at a larger scale. Of our 20 popular targets, Seestar S30 frames 6 well and Atlas Single 6.

SpecSeestar S30Atlas Single
Aperture30 mm80 mm
Focal length150 mm360 mm
Native field of view2.14° × 1.21°1.78° × 1°
Targets framed well6 / 206 / 20
Weight––
Wide-angle cameraNot listedYes
Mosaic modeNot listedYes
Official price$399€3,990

Both frames on the same targets

Solid gold: Seestar S30. Dashed blue: Atlas Single.

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

Where they differ

TargetSeestar S30Atlas Single
M42 Orion Nebulafits welllarger than the frame
M63 Sunflower Galaxysmall in the framefits well

Where to buy the Seestar S30

Where to buy the Atlas Single

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Test both against your own sky

Questions and answers

Which is better for large targets, the Seestar S30 or the Atlas Single?
The Seestar S30, because it has the wider field of view.
Which frames more popular targets well?
Both frame 6 of our 20 popular targets well.

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