Question for Coronado

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

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

"Bill Dean" wrote in message
...
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.

Hi Bill,

Is there any hope we have them in our hot little hands before the Transit?

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.

Does this mean that the PST will be able to view 'doppler shifted'
events unlike the original PST specs?

Thanks again!

PEter Woolliams

Is there any hope we have them in our hot little hands before the Transit?

As I understand it..... they are shipping them as fast as they make
them, though the kind of numbers are not huge...... I hope you placed
your order a good time ago.

There seem to be a good number of people with crossed fingers.

PEter

(Peter Woolliams) wrote in message

Does this mean that the PST will be able to view 'doppler shifted'
events unlike the original PST specs?

Thanks again!

PEter Woolliams


No. The tuner can be used to minimize reflections, but it won't change
the bandpass. I haven't heard that the original spec called for
viewing doppler-shifted events. I know that Coronado added the ability
to stack etalons due to demand from those that saw the prototypes.
Maybe you're thinking of the Maxscope?

Cheers

- Craig

Craig Levine
Observing Chairman
RASC, Halifax Centre
www.halifax.rasc/ca

On 18 May 2004 11:22:47 -0700, (Craig Levine)
wrote:

(Peter Woolliams) wrote in message

Does this mean that the PST will be able to view 'doppler shifted'
events unlike the original PST specs?

Thanks again!

PEter Woolliams


No. The tuner can be used to minimize reflections, but it won't change
the bandpass. I haven't heard that the original spec called for
viewing doppler-shifted events. I know that Coronado added the ability
to stack etalons due to demand from those that saw the prototypes.
Maybe you're thinking of the Maxscope?

Cheers

- Craig

Craig Levine
Observing Chairman
RASC, Halifax Centre
www.halifax.rasc/ca

Whoops! I read your post quickly when I replied earlier. I didn't see
the "un" in front of "like". Sorry!

- Craig

On 18 May 2004 04:40:49 -0700, (Peter
Woolliams) wrote:


Does this mean that the PST will be able to view 'doppler shifted'
events unlike the original PST specs?

Thanks again!

PEter Woolliams

Hi Peter,

No, sorry that wasn't the intent. It works to a degree but not to the
point I would call it a "feature".

Regards,
Bill Dean