Hi Peter,

We made two major changes to the PST design before general release,
the first concerning the objective design and the second which
provides field "tuning" of the internal etalon to allow the owner the
option of adding a second, afocally mounted SM40 with T-max as you
suggest. Double stacking with a second etalon should be trivial and
will not require sending the PST to Tucson for matching with a proper
SM40.

Regards,
Bill Dean
Coronado Technology Group

On 17 May 2004 14:14:48 -0700, (Peter
Woolliams) wrote:

I understand that the first PSTs have started to roll off the
production line.

Could someone from Coronado clarify the changes made in the redesign
and to the specifications. What is now needed to double stack the PST
(?SM40 filter and T-max?)

MAny thanks for the information, looks like you got another great
product there!

PEter Woolliams
London, UK