Precision Applied Products

​​​​​355-B W. Crowther Ave.

Placentia, CA 92870

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Wooden Refractor
​Get Your Scope Ordered Today!

​Precision Applied Products F-7 Apochromatic OTA​​​

​Limited Quantity On Scopes We Build

Apochromatic Scope

​Only 5 Scopes Available

​​To keep our quality high and make sure we delivery on time we only manufacture limited quantities of Apochromat Optical Tube Assemblies.

Apochromatic Refractor

​Only 5 Scopes Available

​On any scope you can order either a polished brass ​or maple hardwood focuser backing plate

Apochromatic Refractor

​Only 10 Scopes Available

​All scopes come with optical coatings applied on every element optimized for each glass type to maximize transmission and contrast.

​100mm F-7 Apochromatic OTA​​​

​120mm F-7 Apochromatic OTA​​​ 

​140mm F-7 Apochromatic OTA​​​


  1. ​Virtually Color Free Viewing
  2. ​Baffles Computer Stray Light Optimized
  3. ​All Lenses Anti-Reflection Coated For Maximum Transmission
  4. Fast Delivery
  5. Excellent Prices

Apochromatic Refractors We Build

Color free refractor objectives from small to large for over 35 years
​Polishing a block of lenses
​Built for you
Centering your lens
​Centering your lens
Pete Holding Refractor Tube Assembly

​Precision Applied Products 140 mm F-6

 Apochromatic tube assembly. Made entirely in our shop with meticulous details. Our main focus is on how well we center the lenses compared to the mechanical axis. This is done to assure perfect collimation. The lenses are centered to within 2 microns of each other and the cell.