Hours:

11am - 11pm EST 
Monday - Friday

1pm-11pm Sat

Tel:

Cell:

919 553-3980  Primary
After 4 rings will ring through to Personal below.

 919-614-4297 personal

FAX:

919 553-3980 Call before Faxing

eMail:

harrysiebert@nc.rr.com

 Q&A

hs3980@nc.rr.com  Request PayPal invoice

 


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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About Siebert Optics

Contact Information

 

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         Products:

 

 

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.

 

Astrographs/Telescopes

 

 

 

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

 

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

      Fabrics

      Purses

     

 

 

 

 

 

 

 

SiebertOptics proudly offers the Planesphere eyepiece Series.

These special eyepieces can not be found anywhere else.

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 of 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.

Siebert Optics Planesphere Series

Specify your size .965" or 1.25"

BK7 These excel from f/4 up (Brass add $40) Good eye relief *, Excellent color correction, All balls are Tack sharp.  

Fused Silica These excel from f/4 up (Brass add $40) Good eye relief *, Excellent color correction All balls are Tack sharp.  

BK7  7.5mm (#BK775)   $139

F.S.   6.5mm  (#FS65)  $139

BK7  6.0mm (#BK760)  $139

F.S.   5.0mm  (#FS50)  $139

BK7  4.5mm (#BK745)  $139

F.S.   4.0mm  (#FS40)  $139

BK7  3.5mm (#BK735)  $139

F.S.   3.0mm  (#FS30)  $139

 

30 day money back guarantee.    

 

 

 

 Reduced scatter and the best "on Axis" sharpness possible

Click on picture for details.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Do you want an Ultra eyepiece with the reticule of your choice? Add $50 to the price  Click here to see choices.
Do you want an Ultra eyepiece with the reticule of your choice? Add $50 to the price  Click here to see choices.
 

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,

Discover

  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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