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Tele Vue

Tele Vue NP101 4" f/5.4 Refractor scope (Ivory tube) with 10:1 Dual Speed Pinion Assembly Focuser.

SKU: TVNP101 MFR: NPF-4056
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$5,300.00 List Price

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About the Tele Vue NP101

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

Ivory color powder-coated aluminum tube, black anodized lens housing, focuser assembly and mounting ring.

Tele Vue NP101 Includes

  • custom-fitted case, screw-on lens cover, sliding dew/glare shield, 2" everbrite, 1 1/4" adapter.

Tele Vue NP101 Specifications

Telescope type 4-element apochromat refractor using special dispersion glasses
Clear aperture 101mm (4 inches)
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 Tele Vue 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 Tele Vue mounting systems
Weight 10 lbs. O.T.A.
Length 29", 26" O.T.A.
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