FLASH: 16" RC SCOPE FROM CHINA!!!

Just what is a "Rayleigh-Criterion" Cassegrain
anyway? And I love where they refer to an
achromatic doublet as a "bi-separated eliminating
chromatic aberration refracting system."
Say that 3 times fast.

it appears to be a 16" F12 cassegrain with a 6" piggyback achromat on a
EM3500 clone. I think they mean Ritchey Chretien. Raleigh Criterion is
a fancy way to say 1/4wave . In other words this telescope's name
literaly means "minimally acceptable".

If it is imported en' mass I would expect to see it rebranded.
Ian Anderson
www.customopticalsystems.com

contact Gary Hand when they arrive.



wrote:

it appears to be a 16" F12 cassegrain with a 6" piggyback achromat on a
EM3500 clone. I think they mean Ritchey Chretien. Raleigh Criterion is
a fancy way to say 1/4wave . In other words this telescope's name
literaly means "minimally acceptable".

If it is imported en' mass I would expect to see it rebranded.
Ian Anderson
www.customopticalsystems.com

"John Savard" wrote in message
...
On 14 Jan 2005 23:38:20 -0800, wrote, in part:

it appears to be a 16" F12 cassegrain with a 6" piggyback achromat on a
EM3500 clone. I think they mean Ritchey Chretien. Raleigh Criterion is
a fancy way to say 1/4wave . In other words this telescope's name
literaly means "minimally acceptable".

I thought they just didn't realize that Criterion is a brand name. But
since that is also an optics term, they could well have taken the
initials, and picked the wrong one.

John Savard
http://home.ecn.ab.ca/~jsavard/index.html
Yes.
My thinking is that the site was probably written by a 'non English
speaker', who had been told the scope was an 'RC', and did a search on
astronomical sites for the meaning of these letters...

Best Wishes

Hi Uncle Bob,

Uncle Bob wrote:
http://www.optics2birders.com/telesc...KP4800x400.htm


On January 3, Meade changed the face of astronomy.
On January 14th, the Chinese rolled their own.

Popcorn, anyone?

Uncle Bob

The 41cm/16" is not the largest RC on their list. They have made RC
scopes of 1.5m/59" and 2.16m/85" aperture, and a Cassegrain of 1.01m/40"
aperture, among others.
http://www.optics2birders.com/telesc...ents/index.htm
Of course, these are not "amateur" instruments, but not too many
amateurs can afford a 16" RC either.

Best Regards,
John.

Can you say "Lost in translation"?

The Chinese don't suffer criticism of any kind -- you will "uporrogize"
(apologize) immediately!

Dr. Stupid wrote:

Just what is a "Rayleigh-Criterion" Cassegrain
anyway? And I love where they refer to an
achromatic doublet as a "bi-separated eliminating
chromatic aberration refracting system."
Say that 3 times fast.

On 15 Jan 2005 05:59:42 GMT, Uncle Bob
wrote:

http://www.optics2birders.com/telesc...KP4800x400.htm

On January 3, Meade changed the face of astronomy.
On January 14th, the Chinese rolled their own.

Popcorn, anyone?

Uncle Bob

Where is the focuser on the piggybacked achromat?
-Rich

in article , John Shakespeare at
wrote on 1/15/05 7:47:

Hi Uncle Bob,

Uncle Bob wrote:
http://www.optics2birders.com/telesc...-Criterion-tel
escopes/KP4800x400.htm


On January 3, Meade changed the face of astronomy.
On January 14th, the Chinese rolled their own.

Popcorn, anyone?

Uncle Bob

The 41cm/16" is not the largest RC on their list. They have made RC
scopes of 1.5m/59" and 2.16m/85" aperture, and a Cassegrain of 1.01m/40"
aperture, among others.
http://www.optics2birders.com/telesc...ents/index.htm
Of course, these are not "amateur" instruments, but not too many
amateurs can afford a 16" RC either.

Best Regards,
John.

Okay, what will these scopes sell for????????
Ed

Look move tube come soon! You wait! No sample, you wait!

RichA wrote:

On 15 Jan 2005 05:59:42 GMT, Uncle Bob
wrote:


http://www.optics2birders.com/telesc...KP4800x400.htm

On January 3, Meade changed the face of astronomy.
On January 14th, the Chinese rolled their own.

Popcorn, anyone?

Uncle Bob


Where is the focuser on the piggybacked achromat?
-Rich

a 16" scope with true 1/4 wave optics would be pretty damn good, if its
smooth of course..

On 14 Jan 2005 23:38:20 -0800, wrote:

it appears to be a 16" F12 cassegrain with a 6" piggyback achromat on a
EM3500 clone. I think they mean Ritchey Chretien. Raleigh Criterion is
a fancy way to say 1/4wave . In other words this telescope's name
literaly means "minimally acceptable".

If it is imported en' mass I would expect to see it rebranded.
Ian Anderson
www.customopticalsystems.com



Herm
Astropics http://home.att.net/~hermperez