[Raytrace] Retraction Of OSLO 6.X Missing Function Complaint

[John D. Upton]

List Members,

     Several months ago, I made a comment on the list about one of my 
favorite OSLO-LT functions being missing from version 6.X.  In version 5.4, 
I use the Scale function quite a bit.  I had not been able to get it to 
work in version 6.04.

     In recent days while playing with OSLO-LT, I stumbled onto the Scale 
function.  It is still present in the 6.X versions of OSLO.  It is just no 
longer on the edit menu.  I don't know why it seems to have been removed as 
a command line command, but at least it is still available.

     The Scale function is available on the pop-up menu when you 
right-click in the lens spreadsheet.  Both forms of the function are 
available as the last option on the pop-up.  There is a scale to new focal 
length and scale by constant.

     The scale by constant is the feature I used most in version 5.4.  It 
is great for entering lens set-ups with mixed unit specifications.  The 
current thread on setting up the Dall Null test for a 22" mirror is one 
example.  You can enter the mirror values in English units and then scale 
the lens by the constant 25.4.  Now all the units are in millimeters and 
you can enter the lens specifications directly.  If you want to convert 
back, just enter 1/25.4 in the scale by constant dialog box.  (Remember to 
set the correct units in General Operating Conditions box before running a 
wavefront analysis.)  Of course, there are other ways to convert and enter 
units but I find the scale function very convenient for this sort of thing.

Sincerely,

John D. Upton
Georgetown, TX
<http://www.atm-workshop.com/>      "The ATM's Workshop Page"
<http://hometown.aol.com/RonWin20/>  "Ronchi For Windows Software Page"