[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]

Re: [ATM] 8" F/4.2 progress


Hi Bob,

>  The image you see is of a ring around the mirror 
>with a central line.  The ring is the ROC point on 
>the mirror. You measure just like the
>Foucault test and the data reduction is exactly the same.

You actually described the 'wire test'. It is different from the 'lateral wire test'. The 'lateral wire test' uses the wire well inside the focus and scans it across the zones. It is superior to the regular 'wire test'. The archives are full of instructions. You should try it!

John





_______________________________________________
ATM mailing list http://www.atmlist.net/