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Cleaning Large Optics and First Surface Mirrors

Cleaning large telescope mirrors, or any large optic surface, is a difficult challenge. Photonic Cleaning Technologies conquers the challenge with Spray Formula First Contact Polymer Solution.

A Touch-Free Cleaning and Protection System for Telescope Mirrors and Optics


  • Spray application allows for complete coverage of any size optic surface
  • Applies with a completely touch-free process. No wipes, no brushes, no chance of scratching the surface!
  • Adheres strongly to itself and particulate contaminants, but has minimal adhesion to the mirror’s surface
  • Protects the mirror - just leave the polymer film on for strong protection from water vapor, oxygen, and physical threats.
  • Re-contamination is not a problem when the cleaned mirror is recoated with First Contact.


First Contact Polymer was used to clean sections of the Gran Telescopio Canaris. Read the press release and check out the other testimonials.


Spray Application Notes

Spray Formula First Contact can be applied using manual pumps or pressure sprayers. There are three sprayer styles available: hand pumped, hand compression pumped, and a heavy duty aluminum sprayer that can pressurized with a bicycle. Check out the b asic information for pressure spray application in Technical Bulletin 141 – Spray Application Note. More information can be found by contacting vendors of HVLP coating equipment.


Some current customers using First Contact™ on large, unprotected mirrors

W.M. Keck Observatory in Hawaii at 14,000 ft atop Mauna Kea.
ESO La Silla
ITT, SLRSC Western Range Depot Optics Group, Vandenberg Air Force Base
First Contact is safe on fused silica, glass of all kinds, and crystals.
First Contact is the safest cleaning product and the only protective film that also cleans an optic.


Crystal Manor Observatory, Purcellville VA 20132

RC Optical Systems 24″ Primary Mirror

Before Coated After

Takahashi Wide Field
Before Coated After

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RSFCDA - Red Spray Deluxe Astronomy Kit (SCT Owners Read Description Carefully)
All in one kit for cleaning telescope mirrors up to 20" in size.