On this page you will find a selection of the interferometric analysis of my last made optics. This page will be updated periodically.

You can see that my Strehl minimum requirements are usually significantly exceeded. This is no coincidence - as long as I see potential for improvement in the Strehl value, I try to improve the result up to the limit.


Nauris #42 - Retouching 16" f/4.5 - 45mm Pyrex - thickness ratio 9:1 - Strehl ratio 0.97 (before Retouching Strehl 0.58 due to Astigmatism)


Nauris #41 - Retouching 16" f/4.5 - 45mm Pyrex - thickness ratio 9:1 - Strehl ratio 0.98 (before Retouching Strehl 0.77 due to Overcorrection)


Nauris #40 - 16" f/4.2 - 34mm Borofloat 33 - thickness ratio 12:1 - Strehl ratio 0.97


Nauris #39 - 12" f/4.5 - 25mm Borofloat 33 - thickness ratio 12:1 - Strehl ratio 0.98


Nauris #38 - 14" f/4 - 25mm Borofloat 33 - thickness ratio 14:1 - Strehl ratio 0.96


Nauris #37 - 16" f/4.3 - 25mm Borofloat 33 - thickness ratio 16:1 - Strehl ratio 0.96


Nauris #36 - Retouching 14" f/5.3 - 23mm Borofloat 33 - thickness ratio 14:1 - Strehl ratio 0.96 (before Retouching Strehl 0.8 due to Astigmatism)

The company Wellenform has professionally surveyed this mirror. You can download the certificate Wellenform created here as a PDF.


Nauris #35 - 14" f/4.3 - 25mm Borofloat 33 - thickness ratio 14:1 - Strehl ratio 0.96


Nauris #34 - 16" f/4.2 - 25mm Borofloat 33 - thickness ratio 16:1 - Strehl ratio 0.95


Nauris #33 - 10" f/4 - 25mm Borofloat 33 – thickness ratio 10:1 - Strehl ratio 0.97
The company
Wellenform has professionally surveyed this mirror. You can download the certificate Wellenform created here as a PDF. In addition to the interferometric analysis, measurements of roughness and waviness were carried out. The result of these measurements states: a perfect in all intents and purposes.

You can download an example for a complete interferometric measurement (which is supplied as standard with every purchased optic!) here. This ZIP archive comprises a file size of 131 megabytes. It contains all interferograms used for the final evaluation.

Please follow the instructions of the Quick Start Guide for the interferometric evaluation. You will then be able to relate the data to my final evaluation on your own. This way of documentation allows maximum transparency.


Nauris #32 - 14,5" f/4.5 - 20mm Borofloat 33 – thickness ratio 18:1 – Strehl ratio 0.93
You can download an example for a complete interferometric measurement (which is supplied as standard with every purchased optic!) here. This ZIP archive comprises a file size of 117 megabytes. It contains all interferograms used for the final evaluation.

Please follow the instructions of the Quick Start Guide for the interferometric evaluation. You will then be able to relate the data to my final evaluation on your own PC. This type of documentation allows maximum transparency.


Nauris #31 - 18" f/3.55 - 25mm Borofloat 33 – thickness ratio 18:1 - Strehl ratio 0.95


Nauris #30 - 12" f/5 - 39mm Pyrex - thickness ratio 8:1 - Strehl ratio 0.97


Nauris #29 - 28" f/4.7 - 49mm Pyrex - thickness ratio 15:1 - Strehl ratio 0.87