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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         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

     

 

 

 

 

 

 

 

Included with the purchase of one of these Dobsonians is your choice of a 2x Barlow or a 19mm, 66 degree SWA eyepiece.

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

Every Dobsonian and piece of information on the Dealers Website are listed here on this page for these scopes. For Questions and possible uses for these Dobsonians. 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 200N Dob

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 $499.95. (#Ra200NDob

The Dobsonian mount is shipped unassembled.

 

Comes with a built in cooling fan for the primary mirror.

 

Also included is a  SuperView 30mm 2" eyepiece and a 9mm 1.25" Plossl eyepiece.

 

SiebertOptics adds a 19mm WideField plossl.

 

 

 

 



 

8" Dob telescope with a focal length of 1200mm and an aperture of 200mm. Great for amateur and experienced stargazers alike. To make viewing the night sky as easy as possible, the optical tube is attached to a Dobsonian mount and is very easy to assemble - the kit includes everything you will need to assemble it. The precision of the mount is guaranteed with manual azimuth and altitude slow-motion controls.

To make azimuth adjustments even smoother the azimuth slow-motion control has special roller bearings. The telescope comes with a 2" dual-speed achromatic Crayford focuser and a 1.25" adapter, which provide for exceptional precision during focusing. All optical elements are made of high-quality BK-7 glass and have a built-in cooling fan to reduce the time it takes the optics to adapt to the outside temperatures.

This telescope comes with a 9mm Plössl eyepiece, which yields sharp, clear views of the lunar and planetary surfaces. Even better, the 30mm SuperView eyepiece allows you to observe the wonders of the farthest reaches of the universe - with it, you can study star clusters, nebulae and galaxies that lie far beyond the Solar System.

Main features:
The primary mirror has a reflectivity index of 94%;
Built-in cooling fan;
Easy-to-use Dobsonian mount;
High-quality optics made of BK-7 glass;
Dual-speed Crayford focuser for precise focus adjustments.
 

The kit includes:
Levenhuk Ra 200N Dob Telescope optical tube
Dobsonian mount
9 mm Plossl eyepiece
30 mm SuperView eyepiece
8x50 finder scope
Finder scope base
Cooling fan
User guide and warranty
 

Specifications
Optical design Newtonian reflector
Primary mirror diameter, mm 200
Focal length, mm 1200
Magnification, x 400
Highest practical power, x 400
Lowest practical power, x 26
Focal ratio f/6
Limiting stellar magnitude 14.2
Resolution threshold, arcseconds 0.69
Focuser 2" dual-speed Crayford
Mount type altazimuth, Dobsonian
Tube-mount assembly system quick-release thumbscrew
Barrel diameter 2", 1.25"
Finder scope optical, 8x50 mm
Eyepieces (included in the kit) 9 mm Plössl, 30 mm SuperView
Primary mirror optics material BK-7 glass
Mirror shape paraboloid
Optical tube material metal
Optical tube length, mm 1170 in 46.1
Optical tube diameter, mm 240 in 9.5
Mount dimensions, mm 500x600 in 19.7x23.6
Optical tube weight, kg 9.4 lbs 20.7
Mount weight, kg 11.2 lbs 24.7
Total weight, kg 28.5 lbs 62.8


Warranty: 3 years
Weight: 62.8 lb. (28.5 kg.)
Package size (LxWxH): 55.1×17.7×13.8 in. (140.0×45.0×35.0 cm.)

 

 

 

Levenhuk Ra 250N Dob

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 $666.95. (#Ra250NDob

The Dobsonian mount is shipped unassembled.

 

Comes with a built in cooling fan for the primary mirror.

 

Also included is a  SuperView 30mm 2" eyepiece and a 9mm 1.25" Plossl eyepiece.

 

SiebertOptics adds a 19mm WideField plossl.

 

       



 

This Newtonian telescope has an aperture of 254mm and a focal length of 1255mm. This telescope is a good choice if you are thinking about getting into stargazing. The Dobsonian mount makes the scope easy to assemble and control. The Dobsonian mount is very easy to assemble - the kit already includes everything you will need to assemble it. Placed into two slots on the assembled mount the optical tube is then locked in place with two springs. As soon as that is done, you can begin your observations.

Made of BK-7 glass the optical elements yields sharp high-quality views. The optical tube has a built-in fan that cools the primary mirror and protects it from deformation, which further adds to the quality of the produced views.

For precise focusing with no backlash this scope comes with a dual-speed Crayford focuser. The focuser accepts 1.25" eyepieces and also has a compression ring on the focuser allows you to attach accessories quickly. The use of roller bearings in the azimuth slow-motion control provides for smooth and precise movements of the mount.

An added bonus, this Dobsonian telescope comes with a wide-FOV SuperView eyepiece (included in the kit) to observe star clusters, galaxies and other deep-sky objects. If you want to observe the moons and planets of our solar system switch from the SuperView eyepiece to 9mm Plössl, and you will be able to see small lunar craters and get clear images of Mars and even Saturn.



Main features:
Built-in cooling fan for the primary mirror;
Easy-to-use Dobsonian mount;
High-quality BK-7 glass optics;
Dual-speed Crayford focuser that ensures maximum precision during focus adjustments.
 

The kit includes:
Levenhuk Ra 250N Dob Telescope optical tube
Dobsonian mount
9 mm Plössl eyepiece
30 mm SuperView eyepiece
8x50 finder scope
Finder scope base
Cooling fan
User guide and warranty


Specifications
Optical design Newtonian reflector
Primary mirror diameter, mm 254
Focal length, mm 1255
Magnification, x 508
Highest practical power, x 508
Lowest practical power, x 36
Focal ratio f/5.1
Limiting stellar magnitude 14.7
Resolution threshold, arcseconds 0.5
Focuser 2" dual-speed Crayford
Mount type altazimuth, Dobsonian
Tube-mount assembly system quick-release thumbscrew
Barrel diameter 2", 1.25"
Finder scope optical, 8x50 mm
Eyepieces (included in the kit) 9 mm Plössl, 30 mm SuperView
Primary mirror optics material BK-7 glass
Mirror shape paraboloid
Optical tube material metal
Optical tube length, mm 1230 in 48.4
Optical tube diameter, mm 310 in 12.2
Mount dimensions, mm 540x640 in 21.2x25.1
Optical tube weight, kg 16 lbs 35.3
Mount weight, kg 12.2 lbs 26.8
Total weight, kg 35.5 lbs 78.3


Warranty: 3 years
Weight: 78.3 lb. (35.5 kg.)
Package size (LxWxH): 57.1×19.7×19.7 in. (145.0×50.0×50.0 cm.)

 

 

 

Levenhuk Ra 300N Dob

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 $979.95. (#Ra300NDob

The Dobsonian mount is shipped unassembled.

 

Comes with a built in cooling fan for the primary mirror.

 

Also included is a  SuperView 30mm 2" eyepiece and a 9mm 1.25" Plossl eyepiece.

 

SiebertOptics adds a 19mm WideField plossl.

 

 

       


 

This Dobsonian telescope has a focal length of 1520mm and an aperture of 300mm. Simple to operate, the optical tube is attached to a mount that is easy to assemble, making this telescope a good choice for a amateur stargazer. To attach simply slide the optical tube into two slots on the assembled mount and lock it in place with balancing springs. Thanks to the special roller bearing, the manual slow-motion controls are smooth and precise.

The dual-speed Crayford focuser allows you to adjust focus with extreme precision and accepts 1.25" and 2" accessories (the 1.25" adapter included). The primary BK-7 glass mirror has a built-in cooling fan to reduce the time it takes the optics to adapt to the outside temperatures. Because of this feature you can enjoy sharp, clear views with no false color.

Included with this telescope are SuperView and Plössl eyepieces that allow you to observe the Solar System planets as well as deep-sky star clusters, galaxies and nebulae.

Main features:
Primary mirror with a reflectivity index of 94%;
Built-in cooling fan for the primary mirror;
Practical and easy-to-use Dobsonian mount;
Optical elements are made of high-quality BK-7 glass;
Dual-speed Crayford focuser for precise focus adjustments.
 

The kit includes:
Levenhuk Ra 300N Dob Telescope optical tube
Dobsonian mount
9 mm Plössl eyepiece
30 mm SuperView eyepiece
8x50 finder scope
Finder scope base
Cooling fan
User guide and warranty
 

Specifications
Optical design Newtonian reflector
Primary mirror diameter, mm 300
Focal length, mm 1520
Magnification, x 600
Highest practical power, x 600
Lowest practical power, x 43
Focal ratio f/5
Limiting stellar magnitude 14.9
Resolution threshold, arcseconds 0.46
Focuser 2" dual-speed Crayford
Mount type altazimuth, Dobsonian
Tube-mount assembly system quick-release thumbscrew
Barrel diameter 2", 1.25"
Finder scope optical, 8x50 mm
Eyepieces (included in the kit) 9 mm Plössl, 30 mm SuperView
Primary mirror optics material BK-7 glass
Mirror shape paraboloid
Optical tube material metal
Optical tube length, mm 1370
in 53.9
Optical tube diameter, mm 360
in 14.2
Mount dimensions, mm 630x640
in 24.8 x 25.1
Optical tube weight, kg 21
lbs 46.3
Mount weight, kg 13.5
lbs 29.7
Total weight, kg 43.0

Warranty: 3 years
Weight: 94.8 lb. (43.0 kg.)
Package size (LxWxH): 66.9×20.5×20.5 in. (170.0×52.0×52.0 cm.)

 

 

 

 

       

  

 

       

  

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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).

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