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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         Products:

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 $449-$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 $49 Call or Email for details.

Camera Focus Adaptors

Camera Adapters - Universal

H-Alpha Focus Accessories

Converters

Special binoviewer services and products you cant get anywhere else 

ICP's Image Correction Prisms for Newts

Diagonals

Extension Tubes

Large refractor modular OTA's

Eyepiece Comparisons

Focal Length Reducers

Miscellaneous

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

      Fabrics

      Purses

Now all you see below are available in .965" and 1.25" sizes.

Here are some reviews that have been done on the Siebert Optics eyepieces showing their advanced optical design  Click here, here, here, here,   here and  here 

See our Monocentrics ID eyepiece line. Click here.

Click to enlarge

Astronomers have known for years that the best views of planets and close doubles are to be had with clear skies, a good 'scope and the proper eyepieces for the job.
For most that has meant Orthoscopics and Monocentrics. The idea is to ensure the best contrast and least scatter so critical for planetary viewing. To make this possible you must use good glass, high polish, and the fewest air/glass surfaces possible. As good as Orthos and Monocentrics are, however and they may have certain advantages,  they still have 3 or more elements within them. The Logical solution...... a spherical singlet lens. No cemented layers to reduce image quality. No multiple elements to reduce sharpness and contrast. On axis, these special lenses produce the sharpest images of planetary detail available anywhere....Period. 
 
Siebert Optics is proud to introduce the Planesphere family of Eyepieces. Call today to discover how Siebert Optics and Planesphere can enhance your viewing experience. Planesphere: The last word in critical viewing.