Stellarvue SV80ED NHNG Deluxe

The Stellarvue SV80ED NHNG is the deluxe version of the venerable 80ED telescope. It features a two section cnc aluminum tube that is binoviewer ready.

The Stellarvue SV80ED NHNG Deluxe is the sharpest doublet optics, combined with the most accurate dual speed Feather Touch focuser and the precision cnc clamshell make this the best 80ED telescope on the market.

This is the premium version of the venerable Stellarvue 80ED Refractor telescope. All of the stops were taken out to make this the best of the series.

Like all Stellarvue 80ED refractors, the hand figured ED lens provides extremely high contrast. To further enhance this high level of contrast, extreme broadband multicoatings are used on all fthe air-to-glass surfaces. This boosts contrast, making the stars appear vivid and the background velvet black.

These coatings transmit light above and below the visual spectrum. This is important to minimize reflections seen on ccd images.

Stardust Blue tube and dew shield: The tube and dew shield are made of aluminum machined on an computer numeric controlled milling machine. All aluminum parts that attach to the tube and dew shield are black anodized.

The dew shield retracts reducing the length of the telescope to about 17.5" when being stored. When the telescope is used, this dew shield may be extended to minimize dewing of the objective at night and to serve as a glare shade during the daytime.

Internal tube treatment:

The main tube interior is painted ultra flat black inside and is properly baffled to eliminate any tube wall reflections. To eliminate reflections in the focuser drawtube there are nine anti-reflection ridges to block reflected light.

Reflections in the optical path are further reduced using an edge blackened objective. All of these methods are used to preserve the outstanding contrast this instrument provides.

Focuser:

Stellarvue use the Starlight Instruments reverse Crayford focuser, the best in the industry as well as the new version F2025DSBCRcr dual speed reverse Crayford which features 2.5" of travel, an ultra-smooth 10:1 ratio dual speed mechanism, compression ring with two thumb screws and ultra-low backlash system.

Focuser Rotator:

The focuser is fully rotating. To rotate the focuser, simply loosen the knurled collet in front of the focuser.

Machined aluminum clamshell mounting ring with Vixen Dovetail: The SVR80ED uses the unique, American made, precision CNC (computer numeric controlled) machined aluminum mounting ring.

This clamshell ring has several 10-32 threaded holes on the side and top accommodating finder scopes, a guide scope or other accessories. the clamshell is precision machined and has an "easy-one-touch" single knurled knob for tighten and loosening the ring.

This permits faster and more convenient balancing of the telescope tube. The underside of the mounting ring has a Vixen style dovetail rail with safety grooves.

This rail fits most telescope mounts on the market such as the Vixen, Celestron CG5 or Meade LXD-55. If you plan to mount this telescope on a larger mount that uses the Losmandy rail the TP6 (Losmandy sized) plate attaches to the bottom of the Vixen rail with two screws.

Stellarvue SV80ED NHNG Supplied accessories:

The Stellarvue SV80ED NHNG comes with the C7 side reinforced, foam lined, airline carry on case. This case will hold the telescope, star diagonal, reflex finder and numerous eyepieces. In addition to the supplied accessories, you will need a star diagonal or erecting prism, eyepiece and a tripod or mount.

Light gathering and magnification power: The purpose of a telescope is to gather light and magnify the apparent size of the object being viewed.

The 80ED gathers 131 times the amount of light of the naked eye. This will reveal faint objects in space. Magnification power (the increase in relative size of the object being viewed) is dependant upon the eyepiece being used.

Different eyepieces provide different magnification powers. Since the 80ED uses a highly accurate, hand figured objective lens and is triple tested in the USA, these telescopes are free of coma and astigmatism seen in many import telescopes.

This provides sharper details when viewing at higher powers. Dawes limit, which is the stated maximum power for telescopes under good conditions is about 186 power for a 80 mm telescope.

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