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amateur telescope Zemax design

lens making Maksutov mirror making optics
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#1 peraspera

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Posted 07 October 2019 - 04:07 AM

Hello everyone,

 

I work as optical engineer and I plan to use an amateur telescope for one of my projects.

The telescope must have long focal length, say a Maksutov with 2700 mm or a refractor + Barlow with f=3000mm. . All of these are rough numbers, no need to be exact.

In order to simulate performance using Zemax, I would need the design of one of these telescopes or at least the "black box" design. Does anyone here have contact to the manufacturers, or hace one of those blackboxes??

Thanks and starry nights !!



#2 luxo II

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Posted 07 October 2019 - 05:16 AM

This thread contains an example https://www.cloudyni...k-91-optic-set/

If you want the details of one you can actually buy (eg the Skywatcher 180mm f/15) see if MKV or VLA have the details.

The original paper by Maksutov with the maths, and the design of the Gregory Maksutov were published in S&T Gleaning Bulletin C and you should be able to find these. The Gregory design can be scaled, provided you’re aware at 7” and above aperture it will require 1 surface to be figured slightly.

More:
https://www.telescop...n_telescope.htm
https://archive.is/Ly7Y

Edited by luxo II, 07 October 2019 - 06:15 AM.


#3 Oregon-raybender

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Posted 07 October 2019 - 10:12 PM

You can also check the reference designs in Zemax, look under telescopes. OSLO has a few samples too. I would check Dr. Smith's book on Optical Design or Telescope Optics. Check William Bell's book section. You may find what your are looking for. A refractor and Barlow is a quick and easy simple system. You can get optics from the Surplus Shed or Edmund to model. I used "old optics" to model make to keep costs down. If you need a compact design, Maks are good, but have to account for the secondary in the design.

Lot's of choices.  1500mm with 2x barlow or 1000mm with 3x barlow.

 

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Edited by Oregon-raybender, 07 October 2019 - 10:15 PM.


#4 DAVIDG

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Posted 08 October 2019 - 08:04 AM

 Many of  the designs in "Telescope Eyepieces and Astrographs" by Berry et al include the Zemax prescription. https://www.willbell...strographs.html

 

         - Dave 


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#5 Mark Harry

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Posted 11 October 2019 - 03:13 AM

Nice book Dave. The table of contents cover a lot of ground!



#6 peraspera

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Posted 13 October 2019 - 07:30 AM

 Many of  the designs in "Telescope Eyepieces and Astrographs" by Berry et al include the Zemax prescription. https://www.willbell...strographs.html

 

         - Dave 

The book looks reaaally nice. But the shipping costs to Europe are higher than the book itself :((((

And thanks to everyone for the replies. I keep on trying to get some blackbox design from SkyWatcher or Takahashi

 

Best



#7 Oregon-raybender

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Posted 16 October 2019 - 08:13 PM

I would check about book stores in Europe, look at patents. There are many articles on the web about optical designs like the 

the one you are looking for. Look for Edmund books on optics, Warren Smith on optics, Zeiss, Jena, and other

optical companies. The design you are asking for is simple and does not require a black box design, unless

you are looking for more than you listed. Do you has access to optical ray trace program? If so, there may be

already a design. Also SPIE and OSA professional societies offer E books, so shipping should not be an issue

Check your local university, they may have one. Go to WorldCat, it will help you search for books.

 

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https://www.worldcat.org/



#8 dan_h

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Posted 17 October 2019 - 08:03 AM

The book looks reaaally nice. But the shipping costs to Europe are higher than the book itself frown.gif(((

And thanks to everyone for the replies. I keep on trying to get some blackbox design from SkyWatcher or Takahashi

 

Best

Same here and I'm in Canada. confused1.gif frown.gif undecided.gif

 

dan




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