Begin with a wide view
A camera on a sturdy tripod can record constellations, the Moon above a landscape, and star trails. Wide lenses are forgiving because small tracking errors are less obvious. Select a location where you can compose safely in daylight, then return when the sky is dark. Avoid shining lights into other observers’ fields of view.
Focus deliberately
Autofocus often struggles on stars. Use manual focus and magnify a bright star on the camera display, adjusting until it appears as small as possible. Recheck focus after changing temperature or handling the lens. The infinity mark on a lens is a useful reference but not a guarantee of accurate star focus.
Match exposure to the subject
Longer exposures collect more light but also show Earth’s rotation as trails unless the camera tracks the sky. The useful exposure length depends on focal length, pixel size, and where the camera points. Inspect a test frame rather than relying entirely on a single rule. The Moon is much brighter than the surrounding night sky and needs shorter exposures.
Process with purpose
Stacking multiple exposures can improve the signal-to-noise ratio when images are aligned correctly. Calibration frames help address some sensor and optical artifacts. Keep original files, note your settings, and describe major processing choices when sharing an image. A pleasing result and a scientifically interpretable image are related but different goals.
Continue with primary sources
Use official resources for current mission information, image captions, and deeper science.
NASA Science ↗ESA ↗
EXPLORE / STARGAZING
EXPLORE / SOLAR SYSTEM
EXPLORE / THE MOON