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When do the big cheap apos arrive??



 
 
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  #1  
Old April 14th 04, 01:07 AM
Richard
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Default When do the big cheap apos arrive??

I've seen the $500 Orion 80mm apo/pseudo-apo. Nice scope, simple
and it works well. Now where are the $2000 5-6" apos from the same
source?
-Rich
  #2  
Old April 14th 04, 01:13 AM
Chuck
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Default When do the big cheap apos arrive??

I'm hoping the 6" is around $1200.00

--

Clear Skies,

Chuck

"Richard" wrote in message
om...
I've seen the $500 Orion 80mm apo/pseudo-apo. Nice scope, simple
and it works well. Now where are the $2000 5-6" apos from the same
source?
-Rich



  #3  
Old April 14th 04, 02:48 AM
DBogan3220
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Default When do the big cheap apos arrive??

Go buy yourself a copy of Telescope Optics Evaluation and Design by Rutten and
Venrooij. Then go give AP a call and get a copy of their new Telescope design
software called Atmos find yourself a glass supplier buy your glass. then start
tooling up BTW you will have spent way more than 2000 by now. After about oh
say 200 hours worth of work you should have three lenses. I hope they are
centered then you can design your lens cell. Think Apos are easy to do your
about to find out

Clear Skies
Dwight L Bogan
  #4  
Old April 14th 04, 04:04 AM
CLT
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Default When do the big cheap apos arrive??

Rich has his own pricing theories --- Voodoo Randernomics

;-)

Chuck Taylor
Do you observe the moon?
Try http://groups.yahoo.com/group/lunar-observing/
And the Lunar Picture of the Day http://www.lpod.org/
************************************

"DBogan3220" wrote in message
...
Go buy yourself a copy of Telescope Optics Evaluation and Design by Rutten

and
Venrooij. Then go give AP a call and get a copy of their new Telescope

design
software called Atmos find yourself a glass supplier buy your glass. then

start
tooling up BTW you will have spent way more than 2000 by now. After about

oh
say 200 hours worth of work you should have three lenses. I hope they are
centered then you can design your lens cell. Think Apos are easy to do

your
about to find out

Clear Skies
Dwight L Bogan



  #5  
Old April 14th 04, 09:48 AM
Jeff Quinn
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Posts: n/a
Default When do the big cheap apos arrive??

You can get a $2000 6" semi-apo if you are willing to work on lens
adjustments. It's called a used Meade 152ED OTA, muahahaha.
  #6  
Old April 14th 04, 12:21 PM
Jon Isaacs
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Default When do the big cheap apos arrive??

I've seen the $500 Orion 80mm apo/pseudo-apo. Nice scope, simple
and it works well. Now where are the $2000 5-6" apos from the same
source?
-Rich


You can have the big cheap APO's. Myself, I will wait until the inexpensive
but decent quality APO's arrive (if they arrive).
-----
It seems to me that to achieve the same level color correction in a 5 inch
scope as in a 80mm using the same glass and same techniques, the focal ratio
will have to signficantly slower. My guess would be that the proper scaling
would place the focal ratio as linear with aperture, this would put the scope
at F12, a 60 inch OTA.

I am not too sure how many folks would be interested in such a scope.

Jon






  #7  
Old April 14th 04, 01:05 PM
DBogan3220
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Default When do the big cheap apos arrive??

Like Jeff suggests there is the Meade 6 inch ED Apo and its a whole lot better
than any Chinese Achro out there. I've said this for years the people who
market the chinese scopes can take an Achro and past Apo on the tube and 90% of
the people out there would not be able to tell. Oh there would be the
accusations then the experts would have to get up there and denounce the
manufacture but most of these cheap scope buyers would refuse the beleive what
they are told.

If you believe the Orion 80 ED is sooo wonderful why don't you compare it
to an 80 mm long focus Achro on say Jupiter at 250x then tell me.

I swear to you there are plenty of people out there who really cannot tell
the difference between an Achro and an APO to save there own lives.

Clear Skies
Dwight L Bogan
  #8  
Old April 14th 04, 03:40 PM
Chris1011
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Default When do the big cheap apos arrive??

Price for refractive optics materials goes up by the cube of the diameter
(related to the volume of glass). The labor goes up by approximately the square
of the diameter. If 1/4 of the scope is material cost, 1/4 is labor cost, the
rest being import and profit for all that handle the item, then the $500 3 inch
refractor should become $2500 retail at 6".

Seems to me that the Meade 6" ED was quite competitive at that rate.

RC
  #9  
Old April 14th 04, 05:48 PM
Caesar Garcia
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Default When do the big cheap apos arrive??

I've heard of voodoo economics but what are Voodoo Randernomics, do
you mean picking off the wall random numbers for pricing?

Caesar Garcia

"CLT" not@thisaddress wrote in message ...
Rich has his own pricing theories --- Voodoo Randernomics

;-)

Chuck Taylor
Do you observe the moon?
Try http://groups.yahoo.com/group/lunar-observing/
And the Lunar Picture of the Day http://www.lpod.org/
************************************

"DBogan3220" wrote in message
...
Go buy yourself a copy of Telescope Optics Evaluation and Design by Rutten

and
Venrooij. Then go give AP a call and get a copy of their new Telescope

design
software called Atmos find yourself a glass supplier buy your glass. then

start
tooling up BTW you will have spent way more than 2000 by now. After about

oh
say 200 hours worth of work you should have three lenses. I hope they are
centered then you can design your lens cell. Think Apos are easy to do

your
about to find out

Clear Skies
Dwight L Bogan

 




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