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Adorama Camera > Binoculars & Telescopes > Telescopes and Accessories > Refractors >

Tele Vue NP101 4" f/5.4 Refractor Telescope (..

Tele Vue

Special Price

$3375.95

Regular Price $3,685.00

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Item Includes Description Features Specifications

Tele Vue NP101 4" f/5.4 Refractor Telescope (Ivory tube).

Mfr. Part: NPC4054 SKU: TVNP101

$Tele Vue NP101 4" f/5.4 Refractor Telescope (Ivory tube).$
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Item Includes

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

Description

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.

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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