How to test a parabolic mirror?

[sergeant_pv]

Hi,

I just ordered my first primary mirror (10") for DOB from Coulter Optics.
I want to test it after it arrives. Does anyone has expirience with testing/checking params for parabolic mirrors?

Clear skies!

 

[Waveform]

If you feel so inclined to do so, then a http://www.telescopemaking.org/ronchi.html" will do the trick.

Or, at first light any problems will become evident.

However, Coulter Optics I have found produces quality products.

 

[sergeant_pv]

Thanks a lot, Waveform - this is exactly what I need!

 

[Chronos]

The knife edge test is also good - http://www.fvas.net/victor/testing.htm

 

[okirfan]

Hi

How to align parabolic mirror for optical beam?