How are star trails photographed?

By exposing for a long period — often hours, usually as stacked shorter frames — while the Earth rotates beneath the sky. Stars near the celestial pole trace short arcs and those near the equator trace long ones.

Why do the trails curve around one point?

Because the Earth rotates on an axis, and that axis points at Polaris in the northern hemisphere. Everything appears to circle that point, which is why a realistic star trail image has one clear centre of rotation rather than parallel streaks.

Star-Trail Sky applied to the same source image — The same source image before and after applying Star-Trail Sky.

Original source image before Star-Trail Sky — The same source image before and after applying Star-Trail Sky.

Star-Trail Sky Photo Filter Online

Draw celestial rotation trails while keeping the foreground perfectly sharp. Control the strength, compare the result, and download a finished image from your browser.

Upload a photo for the Star-Trail Sky effect

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Supported formats include JPG, PNG, GIF, WebP, SVG, HEIC, AVIF, TIFF, RAW, PSD. Maximum file size: 11 MB.

What you can do with the Star-Trail Sky effect

Review the available effect capabilities before you begin.

Apply the Star-Trail Sky effect to any photo
Fine-tune the effect strength to taste
Preview your photo live as you edit
Download your edited photo in high quality
Apply Star-Trail Sky to many photos at once

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About the Star-Trail Sky effect

Stars are drawn as concentric arcs circling the celestial pole, with trail length increasing away from the centre, as a long exposure records the Earth's rotation.

How to use Star-Trail Sky

Upload a photo, adjust the Star-Trail Sky intensity, compare its processed preview with the source, and download the finished result.

Why use the Star-Trail Sky effect?

Star-Trail Sky, tuned to your photo

Use the intensity control to balance the Star-Trail Sky treatment with the detail and character of your original photo.

A fast Star-Trail Sky workflow

A reduced Star-Trail Sky preview keeps adjustments responsive. Free downloads are clean and web-size; Premium or a credit unlocks the original resolution.

Secure Star-Trail Sky processing

Star-Trail Sky uploads are processed on secure servers and automatically removed under the normal Pixoate retention policy.

How it works

Stars are drawn as concentric arcs circling the celestial pole, with trail length increasing away from the centre, as a long exposure records the Earth's rotation.

Processing

Star-Trail Sky runs as a classic image effect and does not use an AI action.

Best for

night landscapes, camping and wilderness photography, architectural night shots, and atmospheric travel imagery.

Less suited to: daylight and heavily light-polluted urban scenes, where visible stars would be implausible.

Ways to use Star-Trail Sky

Star-Trail Sky questions

How are star trails photographed?: By exposing for a long period — often hours, usually as stacked shorter frames — while the Earth rotates beneath the sky. Stars near the celestial pole trace short arcs and those near the equator trace long ones.
Why do the trails curve around one point?: Because the Earth rotates on an axis, and that axis points at Polaris in the northern hemisphere. Everything appears to circle that point, which is why a realistic star trail image has one clear centre of rotation rather than parallel streaks.