Comparison

Seestar S50 Pro vs Origin Mark II

Seestar S50 Pro has the wider field (2.45° × 1.38° vs 1.32° × 0.75°), so it frames large targets such as the Andromeda Galaxy more easily; Origin Mark II shows smaller objects at a larger scale. Of our 20 popular targets, Seestar S50 Pro frames 7 well and Origin Mark II 8.

SpecSeestar S50 ProOrigin Mark II
Aperture50 mm152 mm
Focal length260 mm335 mm
Native field of view2.45° × 1.38°1.32° × 0.75°
Targets framed well7 / 208 / 20
Weight–18.9 kg
Wide-angle cameraYesNot listed
Mosaic modeNot listedNot listed
Official price$999$4,299

Both frames on the same targets

Solid gold: Seestar S50 Pro. Dashed blue: Origin Mark II.

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

Where they differ

TargetSeestar S50 ProOrigin Mark II
M42 Orion Nebulafits welllarger than the frame
M33 Triangulum Galaxyfits welllarger than the frame
M51 Whirlpool Galaxysmall in the framefits well
M82 Cigar Galaxysmall in the framefits well
M17 Omega Nebulafits welllarger than the frame
M63 Sunflower Galaxysmall in the framefits well
M64 Black Eye Galaxysmall in the framefits well

Where to buy the Seestar S50 Pro

Where to buy the Origin Mark II

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Test both against your own sky

Questions and answers

Which is better for large targets, the Seestar S50 Pro or the Origin Mark II?
The Seestar S50 Pro, because it has the wider field of view.
Which frames more popular targets well?
The Origin Mark II (8 of 20, against 7).
Which is cheaper?
The Seestar S50 Pro, at an official price of $999.

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