How to Clean a Telescope

Keeping your telescope clean helps protect its optics and maintain excellent performance. However, it's important to remember that telescopes rarely need frequent cleaning. A small amount of dust on the optics has very little effect on image quality.

Before You Start

Always remove loose dust using a blower before touching any optical surface. Rubbing dust across lenses or mirrors can cause scratches.

Cleaning Lenses

Use:

  • A manual air blower

  • A soft optical brush if required

  • Lens cleaning solution designed for coated optics

  • A clean microfibre cloth or optical cleaning tissue

Gently wipe from the centre of the lens towards the edge using minimal pressure.

Cleaning Mirrors

Primary mirrors should only be cleaned when genuinely necessary. Incorrect cleaning can damage delicate reflective coatings.

If you're unsure, it's often best to seek advice before attempting to clean the mirror yourself.

General Maintenance

  • Replace dust caps after use

  • Store your telescope in a dry location

  • Allow equipment to dry naturally if dew forms

  • Avoid sudden temperature changes where possible

Our Advice

Clean your telescope only when needed. Regular careful handling and proper storage will do far more to preserve its performance than frequent cleaning.