AtmosFringe a super calculations software

[Rohr]

Vorbemerkung: Die Entwicklung zu diesem Programm ist fast ausschließlich in
Englisch abgelaufen, sowohl mit dem Programmierer Massimo Ricardi selbst,
wie mit vielen Freunden in Europa oder USA u.a. bei der interferometry
News Group. Mit Rücksicht auf diesen Personenkreis schrieb ich diesen Text
in Englisch. Gruß Wolfgang Rohr


Fringes map and the calculation software

Long time ago Karl-Ludwig Bath an amateur astronomer published
his Bath-Interferometer in "Sterne und Weltraum 6/1973"

http://www.astro-foren.de/index.php?showtopic=1166

This was one of the most important tool for getting quantitativ results
of an optical systems by testing with interferometry in all spectral
colors. The Laser was invented but not payable for a poor astronomer.
So I developed that basic version of that tool and tested many different
optical systems, but at this time, we all missed a professional calculation
software for that fringes pattern. In 2000 Phillipp Keller, Regensburg,
programmed the first calculation software and I was very appreciate to
have one. But it was a basic program, too and some of our amateur
astronomers weren't satisfied and tried to compare our equippement with
a ZYGO phase shift interferometer and the accuracy of that industrial
tool. Nevertheless I compared our testing results with results of a ZYGO.
Our_results were not far from ZYGO's. End of 2003 the shareware FringeXP was
distributed and lots of the experts started to check the former results,
better than a ZYGO can do, they claimed. They waste much time in
sophisticated discussions. The serious astronomers started to work
with fringes map and with this FringesXP, an interesting fringe
calcualting software. But some features in this program were missing
and a user needed additial tools, programmed from any interested
persons in USA, but not Germany. In June 2004 Massimo Ricardi, Italy,
started for his powerfull and high professional software for calculate
fringes pattern. He is a great expert in developing usefull programms
and my part was helping him with my practical experiences. Now he has
finished his first basic version with lots of important features for
checking an optical system by an interferogram. So let me introduce
in that first edition version 1.4.

The first edition works with fringes map produced in autokollimation
or with a compensation system. It works correct with the obstruction
of the fringes map - this is a problem witch the shareware program
fringeXP doesn't solve. The AtmosFringe basic version doesn't support
the calculation auf of the curvature center (COC), but this FringeXP feature
doesn't fulfil the high exspactations, I've had. The results in autocollimations
setup are more exact than in CoC setup by a difference of 1-15 % Strehl points.

The inventor of the Bath-Interferometer Karl-Ludwig Bath, Freiburg



The interferometer tool



The first system: Zeiss APO AS 80/840

fringes map: Zeiss AS 80/840 546.1 nm wave, setup in autokollimation



AtmosFringe - Report / Certificate



AtmosFringe - Image



AtmosFringe - artificial fringes map calculated by Zernike koeffitients



AtmosFringe - date sheet and aberrations



AtmosFringe - Zernike koeffitients



AtmosFringe - wave front



AtmosFringe - wave surface



AtmosFringe - point spread function PSF



AtmosFringe - PSF surface



AtmosFringe - modulations transfer function MTF



AtmosFringe - artificial Foucault



AtmosFringe - user date for the report



The second system:
Newton 256/1242 650 nm wave in autocollimation setup

The fringes map



AtmosFringe - report / Certificate



AtmosFringe - image



AtmosFringe - artificial fringes map



AtmosFringe - wave front



AtmosFringe - PSF



AtmosFringe - MTF



AtmosFringe - artificial Foucault



This program will be distributed by an USA trader and I'm sure,
Massimo Ricardi will inform us about the details.

[Massimo]

Hi all,

I am new to this forum ,my name is Massimo Riccardi from Italy and may be
you know me after reading my name in the messages posted by Wolfgang Rohr.
I am the author of a new Interferogram analysis software called AtmosFringe
Atmos was the name of my first program (an appreciated lens design software)
so I decided to include it as suffix in this new program. I started to write
AtmosFringe last summer .In that period I was just starting to build my own
interferometer (a Ceravolo type interferometer) and realized that I needed a
program for analizying the interferograms images. After searching on the Net
I noticed that professional software were too expensive (the cheapest cames
at $1500 !!) and the only one available for free was FringeXP.
I must admit that Fringe XP was an important tool for me and for many people
but I noticed that it was lacking in several features (obstruction,PSF,MTF
analisys)and also its interface didn't satisfy me. So I decided to try to
write my own program even if it was a big challenge.

I have to thanks to Dave Rowe ,the author of FringeXP,for his invaluable
support in the first stage of my work in that period.

As any programmer knows it is not possible to write any piece of code without
having clear in your mind all that you are going to do. Anyway I followed my
personal coding method but his help was a very important moment for starting
in the right way.

Thanks to Roland Christen collaboration (he is the well-known owner of Astro-
Physics and dealer of Atmos ) at the end of 2004 the program was at a good
point but I mainly have to thanks Wolfgang Rohr for the big work we did together
over the last few weeks on AtmosFringe .

I knew Wolfgang by chance ,browsing on the Net, and ,in spite of the fact that
I don't understand Deutch language ,I decided to write him just after giving
a look at his website (I was captured from the Bath interferometer and his
ability in optical testing). In few days we started a deep and useful cooperation: Wolfgang continuosly tested AtmosFringe and reported me any bug he found and also
gave me some suggestions and advices . Then I fixed the bugs ,upgraded my program
and re-sent it to Wolfgang. And so on. This is a very important step by step
process which is still continuing for improving the program.

The program has required and requires a lot of hard work so it is not free.
However it cames at a very affordable price if compared with other Interferogram software. Its price will be 200 euro for Europe.
Anyone interested may write to me at:

rimassimo@tiscali.it

As soon as possible there will be a Demo for evaluating AtmosFringe.
It will be downloadable in my website:

http://web.tiscali.it/ATMOS/

and also from Wolfgang's website. http://rohr.aiax.de

For any user outside Europe the dealer is Roland Christen (Astro-Physics) at:

http://www.astro-physics.com/products/products.htm

Kindest regards.

Massimo Riccardi
Italy