This image of M45, the Pleiades, was photographed by Stanley Tang, Starhunter Astromaster™. Created from imaging data collected across Malaysia, Indonesia, and China, the final image combines a total integration time of 22 hours.


This image of M45, the Pleiades, was photographed by Stanley Tang, Starhunter Astromaster™. Created from imaging data collected across Malaysia, Indonesia, and China, the final image combines a total integration time of 22 hours.
Have you ever wondered why the stars appear to move across the night sky?
This photograph is called a star trail — a long-exposure astrophotograph that records the apparent movement of stars over time.But there is a fascinating truth behind these trails.The stars are not actually circling around us.It is Earth’s rotation that creates this beautiful illusion.
As Earth rotates on its axis, the stars appear to move across the sky. Over time, each star seems to trace a curved or circular path known as a diurnal circle.The longer the camera records the night sky, the longer these trails become. A short exposure may show only small arcs. But with longer exposures, the individual paths gradually connect into dramatic lines and circles, revealing the rotation of our planet in a single photograph.
This photograph was captured during one of our SPM Astrophotography Workshops, at a Buddhist temple in Pahang.
The goal was to capture the movement of the stars above the temple and create a strong connection between the night sky and the landscape.But during the exposure, something unexpected happened. Several cars entered the temple area.Their headlights created bright light trails across the foreground. At first, they could have been seen as an unwanted distraction.But instead, I decided to keep them.
Because those unexpected light trails became part of the story. Above us, the stars appear to move in enormous circular paths.
Below us, the headlights record the movement of people and vehicles on the ground.Two completely different kinds of motion are captured in the same photograph.
The Earth is rotating beneath the stars.
And at the same time, people are moving across the surface of that rotating planet.The circular trails in the sky and the linear trails on the ground create a visual contrast between cosmic motion and human movement.
And this is what makes star-trail photography so fascinating to me.It is not simply about creating beautiful lines in the night sky. It gives us a visual way to understand our place in the Universe.When we stand beneath the stars, it can feel as though we are standing still and the entire sky is moving above us.But in reality, we are moving all the time.Earth is rotating on its axis. At the same time, Earth is travelling around the Sun.Our Solar System is moving through the Milky Way galaxy. And the Milky Way itself is moving through the vast structure of the Universe.
For me, astrophotography is not simply about photographing beautiful stars.
It is about understanding our place in the Universe.
We are not standing still.
We are travelling through space — together with our planet, our Solar System, and our galaxy.
Starhunter — Capturing the Invisible Universe.