Hours:

11am - 11pm EST 
Monday - Friday

1pm-11pm Sat

Tel:

Cell:

919 553-3980

919-614-4297

FAX:

919 553-3980

eMail:

hs3980@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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Home Page

About Siebert Optics

Contact Information

 

 

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         Products:

 

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

 

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

     

 

 

 

 

 

 

 

Email or call to see what Siebertoptics Products are included with the purchase of one of these Ritchey Chrétien scopes. --(2" Telecentric Barlows) (Focal Length Reducers) or even (Eyepieces) Etc....

We are flexible to include something you will need for your new RC.

Every RC and piece of information on the Dealers Website are listed here on this page for these scopes. For Questions and possible uses for these RC's. Call (919 553 3980) or Email HarrySiebert@nc.rr.com

In addition

We currently have the following special limited time promotion which will be valid through August 31:

- with the purchase of Levenhuk telescopes (except Strike series), you will receive "See it all!" Astronomer's Handbook ($24.95 value) and Levenhuk Space Posters Set ($29.95 value) absolutely free;
- with the purchase of any Levenhuk Ra series OTA, we'll be giving away one of the filters below:
 

Levenhuk Ra H-Beta 1.25'' Filter ($109.95 value)
Levenhuk Ra H-Beta 2'' Filter ($129.95 value)
Levenhuk Ra UHC 1.25'' Filter ($79.95 value)
Levenhuk Ra UHC 2'' Filter ($109.95 value)

 

Levenhuk Ra 250RC F8 OTA

S.O. Guaranties the QC of the products on this page. And will discontinue products that do not meet proper standards.

This Scope  sell for $2399.95. (#Ra250RCF8

 

 

 

This Ritchey-Chrétien telescope has an aperture of 250mm and a focal length of 2000mm in a traditional metal shell. This model is perfect for any astrophotographer. One of the main features is the primary mirror made of quartz with a dielectric coating of 99% reflectivity. This is also fitted with a dual-speed Crayford focuser with the 3'' large diameter thread.

The quartz glass of the primary mirror has one of the lowest thermal conductivity coefficients among optical materials. This model is fitted with a built-in cooling fan for the primary mirror (12V). The relatively compact size of the telescope tube allows for a smaller mount to be used, unlike Newtonian telescopes. It is recommended that you use the Levenhuk 0.75x focal reducer with any Ritchey-Chrétien model.

Specifications
Optical design Ritchey-Chrétien
Mirror shape hyperboloid
Optics material quartz
Optics coating dielectric, 99% reflectivity
Primary mirror diameter (aperture), mm 250
Focal length, mm 2000
Focal ratio f/8
Secondary mirror minor axis, mm 105
Focuser dual-speed Crayford focuser, 3'' thread diameter
Tube-mount assembly system dovetail plate
Optical tube material steel
Optical tube length, mm 736 in 29
Optical tube diameter, mm 299 in 11.8
Optical tube weight, kg 15.9 lbs 35.2
Total weight, kg 21.2 lbs 46.7

 

Warranty: 3 years
Weight: 46.9 lb. (21.25 kg.)
Package size (LxWxH): 34.6×17.3×16.5 in. (88.0×44.0×42.0 cm.)

 

 

Levenhuk Ra 200RC F8 Carbon OTA

S.O. Guaranties the QC of the products on this page and will discontinue products that do not meet proper standards.

This Scope  sell for $1349.95. (#Ra200RCF8car

 

 

    

  

With an aperture of 200mm and a focal length of 1600mm this telescope has a carbon fiber tube is light weight and lessens its susceptibility to temperature changes. One of the main features is the primary quartz mirror with a dielectric coating of 99% reflectivity. This telescopes is also fitted with a dual-speed Crayford focuser with a 2'' large diameter thread.

The quartz glass of the primary mirror has one of the lowest thermal conductivity coefficients among optical materials. The relatively compact size of the telescope tube allows for a smaller mount to be used. It is recommended that you use the Levenhuk 0.75x focal reducer with any Ritchey-Chrétien model.

 

Specifications
Optical design Ritchey-Chrétien
Mirror shape hyperboloid
Optics material BK-7 glass
Optics coating dielectric, 99% reflectivity
Primary mirror diameter (aperture), mm 200
Focal length, mm 1600
Focal ratio f/8
Secondary mirror minor axis, mm 90
Focuser dual-speed Crayford focuser, 2'' thread diameter
Tube-mount assembly system dovetail plate
Optical tube material carbon
Optical tube length, mm 476
in 18.7
Optical tube diameter, mm 230
in 9
Optical tube weight, kg 7.3
lbs 16.3
Total weight, kg 10.4
lbs 22.9

 

Warranty: 3 years
Weight: 22.9 lb. (10.4 kg.)
Package size (LxWxH): 27.2×14.2×13.8 in. (69.0×36.0×35.0 cm.)

 

 

 

          

 

 

       

  

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
 

 

 
 

    

 

 

 

 

   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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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