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Thank you for visiting Siebert Optics!
Serving Large Observatories and the Amateur Astronomy Community alike.

200 Short Johnson Road
Clayton, NC 
USA  27520


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Eyepieces .965" / 1.25" / 2.0" / 2.7" / 3.0" / 4.0" / 4.3"


Large and Small Binocular Cleaning and Alignment services $99 Call or Email for details.


BT70 RA88 / Miyauchi / Kowa eyepieces


Binoviewer Alignment and Supercharge Services


Advanced Barlow Lenses including: Modular and 4 element Telecentric magnification multipliers


1.25" and 2" Advanced Binoviewers From $649-$1999


 Binoviewer OCA's and Accessories


Adapters - Meade Scopes and ETX


Binoculars - Quality Modified


Large and Small Non Illuminated and Illuminated Cross haired eyepieces.






Camera Focus Adaptors


Camera Adapters - Universal


H-Alpha Focus Accessories



Special binoviewer services and products you cant get anywhere else 

ICP's Image Correction Prisms for Newts




Extension Tubes


Large refractor modular OTA's


Eyepiece Comparisons


Focal Length Reducers




Planetary Fleece Blanket 


PST Accessories


Telecentric Barlow Lenses


Zero Magnification Adapter





Ladies Corner

Saturn Earrings  

Astronomy themed totes/purses


Free Domain Pictures

Astronomy Accessory Links of 

       products not offered 

       by Siebert Optics


Useful Astronomy Links


International Dealers


Astro photos


Non-Astronomy Items










Computer section

We sell ---Dos/Window 98 ---Laptops and Computers

We will custom make one from Speeds of P1 90mhz to P3 1ghz and P4 up to 2.4ghz. All Dos and Win95/98 ready according to the Laptops avaliable.

See some of my work here . EBay Click here.

Computers like optics are my passion. I never stop playing with this technology. I fine the older are the most kindred. Once you have one of these Older machines with all the old games you like you will have it is like an entertainment companion you will need tire of.

Even though not all Laptops are the same the ones I sell all have some of the same things in common. They have been gone over and optimized to play Old Dos and Window 95/98 games with excellent compatibility.  These games are still available and are some of the best games ever made even after all these years. Emulator are not very good on many of these  games. These Laptops play them the way they were meant to be played. I leave most of the Software and games on the Laptops and will tell you how to get very inexpensive copies of any games you might want.

Laptops have their strength and weaknesses spelled out. Some will do everything well in both Dos and Windows 95/98 and other will specialize in Dos or Win95/98. This site is to be a one stop shop for the machine and even games you might want. I can answer questions and make recommendations.

Dos and Window 95/98 need to be understood which is an art that many have lost.

So look on this page for Laptops for sale and if you have a preference let me know. I have many Laptops. Ask what is presently available. I am selling some on EBay right now. Ask here and you will be the first to get the Best Machines

These Laptops are not dirt Cheap but will be guaranteed to work for you the way you would expect. And you WILL have fun with them.

















































All listed products come with a 30-day money-back guarantee* unless otherwise stated.

Specialty order items are not refundable (items made specifically for you).

We welcome
International orders!.

We accept Visa, Mastercard,


  American Express. U.S. Money Orders, and Personal Checks (held 10 working days for clearing)Online payments may be made securely through



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