Tele Vue NP101 Telescope Refractor OTA with 10:1 two-speed focuser $3,995.00,  Televue NPF-4056,Optical Tubes (OTA) Telescopes, Buy online
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Tele Vue NP101 Telescope Refractor OTA with 10:1 two-speed focuser

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MSRP: $5,300.00
Sale Price: $3,995.00
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Savings $1,305.00

TeleVue NP-101 Refractor Telescope OTA w/10:1 2-speed focuser NPF-4056

Item No. 104-30030
Manuf. No. Televue NPF-4056

TeleVue NP101 Telescope Refractor OTA with 10:1 two-speed focuser, NPF-4056

The NP-101 (Nagler-Petzval) is more compact with the same 4-element, 540mm, and f/5.4 specifications. The new scope is 4" shorter and feature both optical and mechanical enhancements over the previous model

The TeleVue NP101 represents TeleVue's closest realization yet of the "ideal" multipurpose/visual telescope. It's snap-to-focus and extremely sharp, flat field are sure to take your breath away.

Over 20 years ago Al saw the incredible design flexibility afforded by the Petzval layout. Al's creative use of glass combinations and design layout has raised the performance bar for fast, short focal length refractors.

In fact, no other design type affords the freedom to simultaneously correct for: coma, astigmatism, field curvature, secondary spectrum, spherical aberration, and spheochromatism to the degree TeleVue achieved with the NP101.

Manufacturing advances in lens finishing, including interferometric monitoring of every surface, and TeleVue's stringent assembly procedure, insure uniformly excellent telescopes.


  • Telescope type: 4-element apochromat refractor using special dispersion glasses
  • Aperture gain: 208 (compared to a 7mm exit pupil)
  • Focal length: 540mm (21.3 inches)
  • Focal ratio: f/5.4
  • Resolution (visual): 1.1 arc-sec (Dawes limit for a 4" aperture)
  • Resolution (photo): 260 line pairs per mm
  • Field (35mm film): 2.5 degrees by 3.8 degrees (4.5 degrees diagonal)
  • Image scale: 2.7 degrees per inch
  • Magnification: 10x to over 250x using TeleVue eyepieces and Barlows
  • Star diagonal: 2 inch, "everbrite" mirror type, with 1-1/4" inch adapter, both with brass clamp rings.
  • Focuser: 2 inch, rack and pinion type with brass clamp ring.
  • Finder: Optional Starbeam or 55mm Plossl for 10x, 4.9 degree field
  • Mounting: Adjustable mounting ring with 1/4-20 tapped holes for standard (heavy-duty) photographic tripods or optional TeleVue mounting systems
  • Weight: 10 lbs. O.T.A.
  • Length: 29", 26" O.T.A.
  • Accessories: Included as standard: custom-fitted case, screw-on lens cover, sliding dew/glare shield, 2" everbrite, and 1 1/4" adapter.
  • Tube color: Ivory color powder-coated aluminum tube, black anodized lens housing, focuser assembly and mounting ring.

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