Stellarvue 70mm APO-TRI/2.5" R/P Focuser

Stellarvue 70mm APO-TRI/2.5" R/P Focuser
Item # SV-70T-25SV
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  • The Stellarvue 70mm APO-TRI/2.5" R/P Focuser is a top quality 70mm Apochromatic Refractor that comes equipped with a 2.5" Dual Speed Rack and Pinion Focuser made by the same company, ideal for surveying the skies.
  • The Stellarvue 70mm APO-TRI/2.5" R/P Focuser comes equipped with a dew shield and custom Stellarvue R70SET Precision hinged rings.


Stellarvue 70mm APO-TRI/2.5" R/P Focuser

This fine piece of equipment is named as the Stellarvue 70mm F-6 Apo Triplet; featuring the latest version of the Stellarvue 2.5" dual speed rack and pinion focuser, this telescope set is a fine piece of craftsmanship for those planning to survey the night sky. It was designed using the sharpest and highest contrast 70mm lens that Stellarvue has to offer, in conjunction with the aforementioned high quality focuser. This is no mass produced scope crafted with inferior glass nor sloppy mechanics- but a premier 70mm Apochromat from Stellarvue, designed and crafted to exacting standards.

The aforementioned lens is a 70mm F-6 with a full focal length of 420mm, fully multi coated. It's a three element objective lens utilizing the Ohara FPL-53 center element- and lens focuses light precisely and in addition, the extreme broadband coatings on each surface enhance performance even further. The visual result is a stunning display of vivid bright stars on a velvet black background of the night sky- contrast beautiful and dichotomous. These coatings transmit more than 99% into the visual spectrum and far above and below that- utterly eliminating reflections seen on ccd images. Combined with the relatively fast speed and high strehl optics, this all comes together to make the 70mm Apo Stellarvue's widest field imaging telescope, and leaves the visual performance absolutely stunning.

The SV70T furthermore comes with an aluminum tube and dew shield finished in fine Instrument White, with Black Anodized aluminum fittings. The dew shield is designed to be able to retract when being stored- allowing you to reduce it's length notably to make it easier to fit away- meanwhile, extending that same dew shield minimizes overnight dewing of the objective, and provides a glare-shade during the daytime.

Let us continue on to mention the long labored over 2.5" Stellarvue visual and photographic focuser. Many years in the making, this latest design within that line is smooth and stable; a dual speed, 2.5" focuser providing an ultra smooth fine focus control at an 11:1 ratio, so as to ensure perfect focus is attainable everytime with a minimum of work. Ideal for both visual and imaging use due to it's design, this focuser provides a full 2.875" of travel. An internal break system further enhances the design by allowing the user to adjust capacity as needed. All together this can be summed as one of the finest dual focusers available today. And indeed- summing all these features together, we find one of the finest 70mm Apochromatics available today!

Stellarvue 70mm APO-TRI/2.5" R/P Focuser

  • Objective: 70 mm clear aperture, 420 mm focal length (F-6), apochromatic triplet with Ohara FPL-53 center element.
  • Tube Assembly: Machined aluminum tube painted Instrument white outside, ultra flat back inside.
  • Dimensions: The main tube is 82 mm in diameter. The complete telescope is about 14 3/4” long with dew shield extended and about 12” long when retracted. Dew shield is 3.5" in diameter.
  • Weight: The optical tube assembly weighs 4.4 lbs. 5.6 pounds with dual rings and Vixen rail.
  • Focuser: 2.5" dual speed Stellarvue rack and pinion focuser with 2" and 1.25" compression ring adapters. Precision rack and pinion focusers has better stability and a higher lifting capacity than 2" import Crayford focusers.
  • Rings: Custom Stellarvue R70SET precision hinged rings. Each ring has three 1/4-20 holes top and bottom with one in the center and two spaced 1.5” apart.

Additional Information

Additional Information

Manufacturer Stellarvue
Telescope Series Stellarvue APO
Optical Design Refractor - Apochromatic
Mount Type None - Optical Tube Only
Warranty 2 Year Warranty
Telescope Aperture 70mm
Telescope Focal Length 420mm
Telescope Focal Ratio F-6
Optical Coatings Fully Multi-Coated
Optical Tube Outer Diameter 82mm
Length of Optical Tube 14.75mm -- 12"
Optical Tube Weight 4.4lbs
Dew Shield Included? Yes
Focuser Size 2.5"
Focuser Style Rack & Pinion
Manual or Electronic Focusing? Manual
Focusing Speeds Two-Speed
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