Vacuum Formed Metal Foil Concave Mirrors: Difference between revisions
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* | *[https://www.cloudynights.com/topic/690162-vacuum-formed-mylar-mirror/ A Post on the Astronomy Forum "Cloudy Nights" titled "Vacuum formed Mylar Mirror ?" ]] | ||
Revision as of 03:09, 19 March 2021
Basics
- Essentially a Concave Mirror formed by either a layer of Metal Foil or Metallzied Film (mylar) , and a special container (either like a "satellite dish" or just a tube with the propper fittings on one side), and a suction/vacuum source
- The vacuum "pulls" the foil back due to atmospheric pressure
- Thus a relitively "perfect" mirror is made from common materials with little need for polishing/metal forming
- It Does Not however have the best preformance, but cost/simiplistic nature may mean you can just make 2x the mirrors etc