Hours:

11am - 11pm EST 
Monday - Friday

1pm-11pm Sat

Tel:

Cell:

919 553-3980

919-614-4297

FAX:

919 553-3980

eMail:

harrysiebert@nc.rr.com


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"

 

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

     

 

 

 

 

 

 

 

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

See our Planesphere eyepiece line. Click here.

Click on pictures. 

 

 

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 eyepiece for the job.
For most, that has meant Orthoscopics. To ensure the best contrast and least scatter, so critical for planetary viewing , good glass, high polish, and the fewest air/glass interfaces as possible, are essential. Although I have a Single element line eyepieces called the Planesphere this Monocentric line is going to still have definite advantages. The Planesphere might have the Theoretical edge that the single element provides for the most critical on axis viewing. But the Mono is pulling in at such a close second that if you add the other advantages it has over the Singlet EP's you realize they will always have an important place in visual Astronomy.

The Mono line gives a wider, flatter useable field to work with. More generous E.R. and 100% guarantied color correction across the field.

In short these new MonoCentrics ID are a pleasure to work with in all respects. How will they compare to other Monos on the market? They hold their own against anything out there at any price and cost about 1/3 what other quality Monos do.  See ad below.

Siebert Optics MonoCentrics ID  Series

Specify your size .965" or 1.25"

 Why use a 10mm Mono or higher with a Amplifier Click-here to find out.

* Using a scope with a lower F-ratio may limit edge of field sharpness if you don't use one of the Flattener/Amplifier. On axis sharpness will not be effected.

10mm $199.  (Brass add $40) #mo10  * Used best at F4 and higher. *

12mm $199. (Brass add $40) #mo12 Best* in scopes F4 and higher unless using an Flattener/amplifier.

14.5mm $199 (Brass add $40) #mo14.5  Best* in scopes F4 and higher unless using an Flattener/amplifier.

17.5mm $199 (Brass add $40) #mo17.5  Best* in scopes F4 and higher unless using an Flattener/amplifier.

20mm $199 (Brass add $40) #mo20     Best* in scopes F4 and higher unless using an Flattener/amplifier.

24.5mm $199 (Brass add $40) #mo24.5   Best* in scopes F4 and higher unless using an Flattener/amplifier.

2" 38.9mm $249 (Brass add $40) #mo38.9   Best* in scopes F4 and higher unless using an Flattener/amplifier.

50mm $249 (Brass add $40) #mo50   Best* in scopes F4 and higher unless using an Flattener/amplifier.

Long F.L. x1.7 Amplifier (Amp17) $199

Long F.L. x2 Amplifier (Amp20) $149

Long F.L. x2.5 Amplifier (Amp25) $199

Long F.L. x3.0 Amplifier (Amp30) $199

Long F.L. x3.5 Amplifier (Amp35) $199

Long F.L. x4.0 Amplifier (Amp40) $199

30 day money back guarantee.    

 

 

 

 

 

 

 

  MonoCentric I.D. (Infinite-Detail) from Siebertoptics.

 

  Some may ask why have MonoCentrics start at 10mm instead of much lower MM sizes. The Answer..  You can have the best of Both Worlds. You can have the Minimal glare and high contrast images you get with a Low MM Mono but by using the New Amplifiers/Field flatteners that are designed with a Longer F.L. and Superior Dielectric Coatings. They are also out of the range of the eyepiece elements so as not to cause interference. They are more a part of the telescope system then a mate for the eyepiece. Many scope systems are build with Internal self amplification Optics. This is a similar concept. Now you can add the advantage of the Field flattening and add Eye relief to the mix and its not hard to see how these will be a pleasure to use. For those who want to use stand alone single eyepieces in a higher power application there is always the..........These are the finial word in Critical High Resolution viewing.

 

 

 Harry Siebert

 

 

    Some may ask why have MonoCentrics start at 10mm instead of much lower MM sizes. The Answer..  You can have the best of Both Worlds. You can have the Minimal glare and high contrast images you get with a Low MM Mono but by using the New Amplifiers/Field flatteners that are designed with a Longer F.L. and Superior Dielectric Coatings. They are also out of the range of the eyepiece elements so as not to cause interference. They are more a part of the telescope system then a mate for the eyepiece. Many scope systems are build with Internal self amplification Optics. This is a similar concept. Now you can add the advantage of the Field flattening and add Eye relief to the mix and its not hard to see how these will be a pleasure to use. For those who want to use stand alone single eyepieces in a higher power application there is always the..........These are the finial word in Critical High Resolution viewing.

 

 

 Harry Siebert

 

 

 

 

 

 

 

 

 

 

 

 

 

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!.

GIFT CERTIFICATES
available in any dollar amount you wish to purchase.

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