Re: [ATM] 8" F/4.2 progress

["Bob May" <bobmay@nethere.com>]

The lateral wire test is the test where a slit is used for the
source and a wire is used as the light block.  The slit of about
.004" and a wire of about .006" should be about right.  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.
Bob May
bobmay at nethere.com
http: slash /nav.to slash bobmay
http: slash /bobmay dot astronomy.net
Replace the obvious words with the proper character.

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