Fournitures de nettoyage

Cleaning Optics Without Damaging Them

The order of operations matters more than the products. Every step should remove particles without dragging them across a coating.

• Blowers first: A rubber bulb blower removes loose dust without contact, and for most situations this is the entire cleaning procedure.
• Soft brushes: Fine natural or synthetic brushes lift particles that a blower leaves behind, again without pressure.
• Optical cleaning fluids: Formulated for coated surfaces, applied to the tissue rather than directly onto the optic so fluid does not run into the cell.
• Lens tissue and microfibre: Single-use tissue is preferable for coated optics, since a reused cloth carries the grit from the last cleaning.
• Sensor cleaning supplies: Swabs and fluids specific to camera sensor windows, where dust matters far more than it does on an objective.
• What not to use: Household glass cleaner, paper towel and breath. Ammonia damages coatings and paper fibres are abrasive at the scale that matters.

Why Choose David Astro for Cleaning Supplies

We would rather talk you out of cleaning than sell you the products to do it badly.

• Honest about necessity: Send us a photo of the optic and we will tell you whether it actually needs cleaning. Usually it does not.
• Procedure explained: We walk through the correct order — blower, brush, fluid — because the sequence prevents most coating damage.
• Professional cleaning available: For a badly contaminated or delicate optic, we can clean it in-house rather than have you risk a valuable lens or mirror.
• Coating-safe products only: We stock fluids formulated for multi-coated astronomical optics rather than general consumer lens cleaners.
• Ships from Canada: No duties or brokerage fees for Canadian buyers.

Cleaning Supplies in Canada — Frequently Asked Questions

How often should I clean my optics?

As rarely as possible. Dust has almost no measurable effect on image quality, while each cleaning risks scratching the coating. Clean when there is something on the glass that will damage it, not for appearance.

Can I use glass cleaner?

No. Household cleaners often contain ammonia, which attacks optical coatings. Use fluids specifically formulated for coated astronomical optics.

What about a mirror?

Aluminium coatings are more delicate than lens coatings. Washing a primary is a specific procedure involving distilled water and no rubbing, and it is worth having done professionally if you are unsure.

How do I clean a camera sensor window?

With a blower first, then a dedicated sensor swab and fluid if necessary. Dust here matters far more than on the objective, since it sits close to the focal plane and casts sharp shadows.

Unsure whether to clean?

Send us a photo and we will tell you honestly, or clean it here. Canadian stock and in-house service.