Home

  Images

  Equipment

  Resources

  Podcast

  Blog

  Contact

 


 
 
 FreeFind

Translation

The Fabry Perot Etalon

The HA Etalon

Here you see the entire Etalon. The surfaces are coated with a reflective material and spaced around 100 to 200nm apart. Based on the destructive interference of light, unwanted rays are cancelled out and desired rays are passed.

The type of material separating the two filters, the amount of reflectivity, ambient air pressure and most importantly, the distance between them, determine the bandpass of the filter or how much solar detail you’ll see.

Why Ha? | The View | What you see | The Chromos | Ha Emission | Bandwidth | Main Designs | Ha Components | Rear Filters | The Etalon | Front Filters | Coronado filters | DayStar Filters | Solar Spectrum Filters

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


 © Greg Piepol