[ATM] RossNullXP, a new program based on an old program

["James Lerch" <jlerch1@tampabay.rr.com>]

Greetings All,

I've been working on a re-write of Doug George's original Ross Null calculation 
software.  I think it is finally ready.

What does it do?
    A) Calculates the spacing for the Ross Null test based on user data entry.

    B) Includes Null Lens to Mirror Surface error margin evaluation, if so 
selected.

    C) Includes a database of glass types to assist in solving for refractive 
index.

    D) Will save the test results as an OSLO file, and launch the OSLO file if 
so selected.  If you elect to use the OSLO function, there is a slight 
discrepancy in the calculation on the distance between the KE/Light source and 
first surface of the Ross Null Lens.  I don't know why it turns out that way, 
but here is a work around to perform in OSLO:

#1 Open the slider wheel spread sheet (Icon on top row)
#2 Select Long. SA on the second line
#3 Select Surf  0 / Item Thickness
#4 Click green check mark
#5 On the slider window that opens up, you'll need to push the step value down a
couple notches.
#6 Move slider thickness one way, check wavefront analysis display, if it gets
worse, move slider the other way and repeat.

(BTW, Lens to Surface Image thickness in OSLO is a pickup off the OBJ thickness,
so everything starts were it began, and sets you up for the classic KE, Ronchi,
or Inter at null requirements)

Download from here if interested:
http://lerch.no-ip.com/atm/RossNullXP.zip (156KB)

The zip file contains:
    1) Doug George's original DOS program, Pascal code, and documentation
    2) RossNullXP's VB6 Source Code
    3) RossNullXP's executable.

I only ask one favor.  Don't give me any grief over the number of decimal places 
the code displays! If you don't like how many digits of precision are displayed, 
mentally round it to a number you are more comfortable with! :)

Take Care,
James Lerch
http://lerch.no-ip.com/atm (My telescope construction,testing, and coating site)

"Anything that can happen, will happen" -Stephen Pollock from:
"Particle Physics for Non-Physicists: A Tour of the Microcosmos"

" Press on: nothing in the world can take the place of perseverance.
Talent will not; nothing is more common than unsuccessful men with talent.
Genius will not; unrewarded genius is almost a proverb.
Education will not; the world is full of educated derelicts.
Persistence and determination alone are omnipotent. "
                                                           Calvin Coolidge 

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