Re: ATM Mylar windows / gratings

[andydtg@alpha1.phoenix.net]

Re:

>> The discussion of mylar windows has rekindled an interest of mine: Objective
>> Gratings.  I have seen somewhere, in my dim memory, a procedure for inking a
>> grating onto the mylar by wrapping it around a tube that is mounted in a
>> lathe.  The inking pen rides on the lathe in place of a cutting tool.
>> 
>Hmm   Would this work for ronchi gradings?

I read a while back that an 'easy' way to make ronchi screens was to construct
a rectangular frame using fine pitch all-thread for 2 opposing sides. You then
wind fine wire around these 2 edges, glue into place, & cut off all the
wire from one side, ending up with alternate wires and spaces. Might work on a
larger scale for objective gratings also.




Andy Saulietis / DTG Alt-Az-Fp Drive Systems
12617 Harriet Ln
Santa Fe, TX 77510 USA
409-925-8854 Voice/Fax