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919 553-3980



919 553-3980



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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Telescopes for sale



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


BT70 RA88 / Miyauchi / Kowa eyepieces


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


Binoviewer Alignment and Supercharge Services


Adapters - Meade Scopes and ETX


Binoculars - Quality Modified


Large and Small Non Illuminated and Illuminated Cross haired eyepieces.


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


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




Observers Hood - light blocking 


Planetary Fleece Blanket 


PST Accessories


Telecentric Barlow Lenses


Zero Magnification Adapter





Ladies Corner

Saturn Earrings  

Astronomy Themed  Fleece Blanket 

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










Universal Camera Adapter for Photography

If you are serious about astrophotography this adaptor will do what no other single adaptor will !

And will do it better !  Some adaptors claim to be universal but for the first time this one really is!



Attention all Astro- photographers and the like.  Here is a universal camera adapter that is truly universal.  It will work with virtually all eyepieces, camera's with tripod mounting holes and scopes with 2" focusers.  Now use any 2" or 1.25" eyepiece to do astrophotography. Or remove the eyepieces for direct imaging.


All purpose Camera Adapter w/step-down adapter:  

$149 #(CA2)

Optional 1.5x Magnifier  for use with camera.

$49 (BarCA2)




Click here to view some astrophotos taken with my 10" f7.2 dob, this universal camera adapter, 1.5x barlow and Siebert 21mm swa and Siebert 10mm wa eyepieces


Universal Camera adaptor.

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See Products list for complete list of prices and configurations.


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!.

available in any dollar amount you wish to purchase.

I accept PayPal, the #1 payment service in online auctions!

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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