See here,
http://www.cloudynights.com/ubbthreads/ ... art/2/vc/1Hi all,
my name is Massimo Riccardi the italian author/developer/designer of the Riccardi-Honders.
In general I don't use to write on forums however, since this is one of the most important forum, I wished to post here few words for clarifying some concepts.
Yes ,I confirm there is not only the R-H produced by Roland Christen there also is that "Made in Italy" .
Roland is a friend for me and not only the dealer of my software (Atmos lens design software and AtmosFringe interferogram analysis software are sold in the AP website).
Roland is also that who firstly proposed my name on this scheme because several years ago I developed the original idea of Klaas Honders and was able to develop/design a particular Cassegrain-type configuration which was fast,compact and well corrected over a large field only by utilizing spherical surfaces.
This is why it is called Riccardi-Honders.
Roland loved so much my scheme to decide (like me) to make a product like this.
The only difference is that Roland preferred a slightly different design from mine (differences are small yet).
Riccardi-Honders in general have a front corrector, a Manging mirror , a secondary mirror and finally a corrector located at same distance before the focal plane.
Roland preferred in his design a single lens corrector while my faster design include a two-lens corrector and a much longer backfocus (about 180mm)
II only wish to inform that the R-H astrograph that will be available (very soon) by A&M is designed by me.
It is a faster 300mm F-3 Riccardi-Honders which
performs a wide flat well-corrected field (about 60mm).
The instrument will be focus stable since there will be special material for the tube in order to compensate the shift.
There also is another new A&M website here:
www.officinastellare.comwhere you can find it.
Within few days there will be assembled the first optical sets for the market.
For those interested to very large astrographs soon there
will be available another incredible astrograph.
I designed another different configuration in the range 350-800mm diameter F/3.6 astrograph performing about 8-10 micron over an huge 80-90mm field diameter.
The name will be Riccardi Large Astrograph.
The first one will be ready within the end of may.
It is a 560mm diameter F/3.6 and I think yoou will see it at the next AIC and NEAF exibition at the A&M stand and in their website.
I hope this may be interesting for someone out there.
Regards (and sorry for my english).
Massimo Riccardi