This is the STELLARVUE SV80ST f-6 apo triplet made using our deluxe 2.5″ dual speed, rack and pinion focuser. It uses the sharpest and highest contrast 80 mm apochromatic triplet lens we have ever offered. The focuser is threaded for photographic field flatteners sold below and has 1 1/4” and 2” compression ring visual adapters. This telescope also comes with heavy duty dual rings and a C19 heavy duty travel case. This is not a mass produced scope using inferior glass and sloppy mechanics. This is a truly premier 80mm apo.

The STELLARVUE SV80ST features an 80 mm f-6 (480 mm focal length) fully multi-coated, 3 element objective lens with an Ohara FPL-53 center element.

The high Strehl, apochromatic triplet objective is triple-tested at Stellarvue to ensure that it performs perfectly. Lenses are better than .95 Strehl, the same as our former Russian made Lomo lenses. We are now taking the time to provide interferometric test reports with each of our triplet refractors showing how the lens in your telescope actually performs. Hitting a Strehl ratio of at least .95 means your telescope will perform perfectly.

Each lens focuses light precisely and in addition the extreme broadband coatings on each surface enhance it even further. Using it visually, the stars appear vivid and the background, velvet black. Since these coatings transmit more than 99% in the visual spectrum and far above and below it, reflections seen on ccd images are eliminated. The relatively fast speed and high Strehl optics make the 80 apo an excellent wide field imaging telescope while the visual performance is simply stunning.

The standard model (SV080ST-25SV) comes with an aluminum tube and dew shield that is finished in Instrument White. Fittings are black anodized aluminum. The dew shield retracts reducing the length of the telescope when being stored. Extending the dew-shield minimizes dewing of the objective at night and serves as a glare shade during the daytime.

The inside of the main tube assembly is painted “ultra flat black” and is baffled to eliminate tube wall reflections.

The aluminum tube of the SV80ST cools down rapidly and is nearly the same weight as composite tubes. We feel that aluminum is is the best material for this particular telescope as it cools down rapidly and allows for perfect alignment through precise CNC machining.

Many years in the making, our smooth and stable dual speed, 2.5” focuser provides a full 3.2″ of travel. This focuser is perfect for visual use as well as imaging. The rear of the draw tube is threaded to accept our dedicated SFF6-25 photographic field flattener (for cameras with APS size sensor). The Stellarvue focuser is a heavy-duty rack and pinion unit designed to carry a higher capacity. It has an ultra-smooth (7:1 Ratio) fine focus control to attain perfect focus every time. An internal brake system allows the user to adjust capacity. The focuser is fully rotating with a wide groove for smooth and precise rotation. All of the features add up to one of the finest dual speed focusers available today.

The SV80ST comes with two-hinged, American-made, cnc-machined aluminum mounting rings. Each ring has five screws top and bottom. Threaded holes are 1/4-20. There is one center hole, two holes spaced 1.5″ apart and two holes spaced 60 mm apart. Use the optional TP14 rail for telescope mounts using the Vixen style rail or use the optional TP6 for mounts that use the larger Losmandy style rail.

The SV080ST comes with a thickly padded, C20 airline carry-on case. Outside dimensions: 22″ x 9.5″ X 7.5″. Inside dimensions: 19.5″ X 6″ X 5″.

An 80 mm refractor gathers 131 times the amount of light the naked eye does. Although Dawes limit states maximum power for telescopes under good conditions is about 189 power for an 80 mm telescope, you can exceed this power on a steady night. This is a true apo triplet capable of high power when conditions permit. Check the Recommended Accessories section to make the best choice for eyepieces.

We are with you for life. Stellarvue telescopes and accessories are covered by a two year warranty. But it does not stop there. Since we are a telescope maker, we can repair your telescope for a very nominal fee years after it goes out of warranty, should you accidentally drop it on concrete or otherwise damage it. Buy a Stellarvue Telescope with confidence. Our customer care is legendary.

OBJECTIVE LENS: Stellarvue 80 mm Apo Triplet lens using an Ohara FPL-53 center element. Meets our .95 Strehl minimum standard, Zygo test report included. 80mm clear aperture, 480 mm focal length (F-6)
TUBE ASSEMBLY: Lightweight aluminum tube and dew shield in Instrument White
DIMENSIONS: The main tube is 90 mm in diameter. The complete telescope is 18 3/4” long with dew shield extended and 16” long when retracted.
WEIGHT: The optical tube assembly weighs about 5.8 lbs. The dual rings weigh about 1.2 pounds total.
FOCUSER: 2.5″ dual speed Stellarvue rack and pinion focuser with 2″ and 1.25″ compression ring adapters. Has better stability, less vignetting and a higher lifting capacity than 2″ import Crayford focusers.
DEWSHIELD: 4″ (102 mm) diameter fully retracting dewshield with cap
FINDER: Optional. We carry the F001 red dot finder and the F002 multi reticle finder.
PLATE/RAIL: Optional. We carry the TP14 rail for telescope mounts using the Vixen style rail or use the optional TP6 for mounts that use the larger Losmandy style rail.
RINGS: Stellarvue R90SET precision hinged rings. Each ring has five 1/4-20 holes top and bottom with one in the center and two spaced 1.5” and 60mm apart.
CASE: The SV080ST comes with a thickly padded, C20 airline carry-on case. Outside dimensions: 22″ x 9.5″ X 7.5″. Inside dimensions: 19.5″ X 6″ X 5″.
DIAGONAL: Optional. Please note, you can purchase our 2″ diagonal upgrade for only $139 above. The upgrade diagonal is the same as the D1029ED deluxe dielectric diagonal but it does not come with a 1.25″ adapter since the telescope already has one.
LIGHT GAIN: 131x (human eye = 1)
THEORETICAL RESOLUTION: 1.5 arc sec (Dawes Limit)
Image Circle with 2.5″ Focuser and SFF3: 28.4mm
Image Circle with 2.5″ Focuser and SFF6: 26.7mm

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