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

We do not furnish loaner eyepieces for Star parties. Though we do not put restocking fees on eyepieces returned after star parties we do reserve the right to charge a repair fee or refuse returns on eyepieces that have been damaged or show excessive wear and/or scratches on the optics. We will not charge any restocking fees on returned undamaged items that are in resell condition within the return period. We also reserve the right to take between 3 to a maximum of 6 weeks to process returns on large item orders that exceed $1000. It is unlikely to take this much time to process, but sometimes it does. We are not obligated to accept returns on Late or heavily discounted items. This also goes for closed out items,  We "may" choose to issue in-store credits for these items at "our desecration. --We do reserve the right to deny returns on these things.  All .965 products are not refundable. All illuminated eyepieces are not refundable. The same goes for items ordered in brass. The reason is that certain products are sold far too infrequently to be restocked.  Binocular eyepieces  and Personal binoculars  that have been modified for you are considered a "special order" item and like all "special order" items are not refundable. These items might be subject to in-store credits for these items at "our desecration.