Please note: Prices subject to change at any time. Please inquire for specific and binding price quotes for your particular project(s).

 © 2002-2019 by TEETER'S TELESCOPES, LLC.                                              

Last Update: November 30, 2019

  • Facebook Social Icon
  • Twitter Social Icon
  • YouTube Social  Icon

Large apertures, very fast focal ratios and best of all, SHORT eyepiece heights! With focal ratios of less than F/4, this line of Truss-Dobsonians allows the unique observing experience of large apertures without a ladder for many observers. The "Sub4" line also yields stunning widefield views of the Milky Way and larger deep space objects like The Veil Nebula, the Rosette Nebula, the Pleiades Star Cluster and many others.

Why Buy a STS?

The Sub-F/4 revolution of high-quality Newtonian primary mirrors is upon us and has brought larger apertures down to the level of the advanced amateur astronomer, both literally and figuratively;

 

These large, short, scopes represent the ultimate in deep space performance in a package that is transportable and comfortable to use all night long;

 

Moderate to larger apertures provide stunning deep space object details to fascinate even the most experienced observer;

 

Sub-F/4 focal ratios allow for breath-taking widefield views of the Milky Way and large deep space objects when combined with widefield eyepieces;

 

Our Truss Ring makes these apertures and focal ratios a breeze to set up and transport;

 

Primary mirrors are supplied exclusively by Lightholder Optical (16"-22"), manufacturer of fine primary mirrors. Antares Optics provides finely crafted 1/20 P-V secondary mirrors up to 4.00" Minor Axis that are a perfect match for these fast primary mirrors. Ostahowski Optical supplies 1/10 P-V secondary mirrors larger than 4.00". Magnifications of 40x-50x per inch of aperture are achievable on nights of steady atmospheric seeing conditions;

 

Lightholder Optical primary mirrors come with printed test reports, while Antares Optics and Ostahowski Optical secondary mirrors come Zygo tested.

Why Buy a Sub4?

Every TT/Sub4 Includes These Great Parts:

- Teeter's Telescopes Exclusive "Truss Ring" Feature;

- Flotation-type Primary Mirror Cell (16" - 22", 18-point);

- Astrosystems 4-vane Spider and Secondary Holder;

- Moonlite Single-Speed 2"/1.25" Crayford Focuser;

- Dual Boundary Layer Cooling Fans;

- Light Shroud and Truss Pole Carry Case from Shrouds by Heather; etc.

 

 

 

 

 

 

 

 

 

"The 20-inch scope is amazing.  I love it.  It works so well and is a joy to use.   It attracts people and optics are superb.  

 

Scope is definitely a significant attraction at the events I’m attending.  Several individuals were interested in the scope and who built it.  Your plate on the mirror box tells the story.  

 

I had someone who was very interested in how the scope operates, so I let him work it both manually and with the ServoCat.  He was pleased because it is smooth and well balanced.   Scope centered on requested object with ServoCat and DSCs no problem

 

Other visitors were taking their picture in front of it and so on.  I am really enjoying the scope.

 

Scope is performing great..Star images look good when mirror hits ambient temperature with no astigmatism and good object definition."

Recently Mike P., the owner of TT124 (20" F/3.5) had this to say:

2019 Pricing & Specifications

Note: All prices now include the "Howie Glatter Cable Sling" for optimal primary mirror support as standard equipment!

16" F/3.8

Specifications

Focal Length: Approximately 61.0"

 

Secondary Mirror: 3.50" minor axis, Borosilicate, 1/20 P-V, 96% Enhanced Coating

 

Primary Mirror: 1.50" thickness Supremax Substrate

 

Zenith Eyepiece Height: Approximately 58"

 

Heaviest Component (Mirrorbox w/ mirror): Approximately 52 pounds

 

Total Lower Assembly Weight (Mirrorbox w/ mirror + Rockerbox): Approximately 74 pounds 

 

Widest Component (Rockerbox w/ protruding hardware): Approximately 27.25"

Pricing

Complete Scope with Lightholder Optics Primary Mirror:

$8,900.00 *

 

 

 

 

Structure Only (Supply Your Own Primary & Secondary Mirrors):

$4,400.00

Note: These apertures and focal ratios are merely suggestions. We can build any aperture (8" - 22") and focal ratio (F/3 - F/8). Please inquire for a custom quote.

Complete Scope with Lightholder Optics Primary Mirror:

$10,575.00 *

 

 

 

 

Structure Only (Supply Your Own Primary & Secondary Mirrors):

$4,625.00

Pricing

Specifications

Focal Length: Approximately 67"

 

Secondary Mirror: 4.25" minor axis, Borosilicate, 1/10 P-V, 96% Enhanced Coating

 

Primary Mirror: 1.625" thickness Supremax Substrate

 

Zenith Eyepiece Height: Approximately 64"

 

Heaviest Component (Mirrorbox w/ mirror): Approximately 67 pounds

 

Total Lower Assembly Weight (Mirrorbox w/ mirror + Rockerbox): Approximately 95 pounds 

 

Widest Component (Rockerbox w/ protruding hardware): Approximately 29.25"

18" F/3.7

Note: These apertures and focal ratios are merely suggestions. We can build any aperture (8" - 22") and focal ratio (F/3 - F/8). Please inquire for a custom quote.

20" F/3.5

Specifications

Focal Length: Approximately 70"

 

Secondary Mirror: 4.50" minor axis, Borosilicate, 1/10 P-V, 96% Enhanced Coating

 

Primary Mirror: 1.625" thickness Supremax Substrate

 

Zenith Eyepiece Height: Approximately 67"

 

Heaviest Component (Mirrorbox w/ mirror): Approximately 85 pounds

 

Total Lower Assembly Weight (Mirrorbox w/ mirror + Rockerbox): Approximately 117 pounds 

 

Widest Component (Rockerbox w/ protruding hardware): Approximately 31.25"

Pricing

Complete Scope with Lightholder Optics Primary Mirror:

$12,700.00 *

 

 

 

 

Structure Only (Supply Your Own Primary & Secondary Mirrors):

$4,875.00

Note: These apertures and focal ratios are merely suggestions. We can build any aperture (8" - 22") and focal ratio (F/3 - F/8). Please inquire for a custom quote.

22" F/3.3

Specifications

Focal Length: Approximately 72.5"

 

Secondary Mirror: 5.50" minor axis, Borosilicate, 1/10 P-V, 96% Enhanced Coating

 

Primary Mirror: 1.625" thickness Supremax Substrate

 

Zenith Eyepiece Height: Approximately 68.5"

 

Heaviest Component (Mirrorbox w/ mirror): Approximately 95 pounds

 

Total Lower Assembly Weight (Mirrorbox w/ mirror + Rockerbox): Approximately 131 pounds 

 

Widest Component (Rockerbox w/ protruding hardware): Approximately 33.25"

Pricing

Complete Scope with Lightholder Optics Primary Mirror:

$14,800.00 *

 

 

 

 

Structure Only (Supply Your Own Primary & Secondary Mirrors):

$5,275.00

Note: These apertures and focal ratios are merely suggestions. We can build any aperture (8" - 22") and focal ratio (F/3 - F/8). Please inquire for a custom quote.

Please note - pictures above of telescopes may include optional equipment available only as an upgrade.  Please see our Standard Features page for a full listing of all equipment included for the base prices listed above. Prices subject to change without notice.

*Lightholder Optics pricing yet to be determined for 2019. Telescope prices shown are based upon their 2018 prices. Please inquire with us directly to discuss expected 2019 pricing for our telescopes with Lightholder Optics primary mirrors.