Tele Vue Tele Vue-NP101is 4"/101mm Refractor Telescope

Tele Vue-NP101is 4"/101mm Refractor Telescope

Tele Vue-NP101is 4"/101mm Refractor Telescope

B&H # TENP101IS MFR # NPI-4057
Tele Vue Tele Vue-NP101is 4"/101mm Refractor Telescope

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Product Highlights

  • APO Nagler-Petzval Refractor
  • 540mm, f/5.4
  • 4"/101 Aperture
  • Dual-Speed 10:1 Focuser
  • Threaded Imaging Insert
  • Fully Multicoated
  • Made in USA
  • Requires Eyepiece, Mount & Tripod
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You Pay: $3,699.00

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  • 1Description

The Tele Vue-NP101is 4"/101mm Refractor Telescope from Tele Vue is a stellar leader in the field of high end imaging telescopes. Tele Vue's craftsmanship and optical excellence is legendary and this APO pushes the envelope of excellence. The Tele Vue-NP101is refractor offers a 540mm focal length with an f/5.4 in a precision crafted instrument designed for CCD astro-photography. The Nagler-Petzval design uses widely spaced doublets to produce a flat focal plane over a relatively narrow field of view. The "is" designation denotes an instrument capable of accepting Imaging Systems by offering a specific mechanical architecture for photography. The Tele Vue-NP101is is as optically, mechanically, and functionally near perfection as possible for imaging up to 50mm diagonal chips without detracting from the excellence of its visual capabilities.

The APO Nagler-Petzval refractor telescope has been provisioned with a Focusmate dual-speed focuser possessing a larger draw tube with a 3" front aperture and 2.4" rear aperture. The rack and pinion focuser holds up to 12 lbs of weight while providing the extremely fine focusing control of a 10:1 dual speed pinion assembly. The draw tube allows quick transition from imaging to viewing. It has an imaging insert ring with four lock screws which is threaded to accept optical items, cameras and CCD attachments. The focuser itself is a planetary ball type reduction focuser with extremely sensitive focus adjustment better than 1/10,000". A sliding metal dew shield, screw-on metal lens cover and a hard-shell carrying case are part of the package. Dark sky watching and imaging doesn't get any more satisfying than this.

The apochromatic refractor is the telescope design which produces the greatest breathtaking contrast and resolution, and Tele Vue doesn't skimp on the engineering. It won't deliver the light gathering capacity per dollar of Newtonian reflectors nor the portability of aperture of a Schmidt-Cassegrain. What it does deliver are views to be envied by both, with the darkest of background sky and the sharpest, widest fields imaginable. Combined with Tele Vue eyepieces, the experience cannot be bested by anything one would consider portable.

APO Nagler-Petzval refractor with 2 groups of 4 elements
Hard-shell carrying case allows added protection with convenient and stylish transportation
Sliding metal dew shield and screw-on metal lens cover add protection and shielding to the telescope
Fully multicoated optics provide multiple layers on all air to glass surfaces for a brighter, higher-contrast image with less eyestrain
Drawtube enlarged focuser with 3" entrance aperture and 2.4" exit aperture sports a Focusmate dual-speed 10:1 rack/pinion focuser. Focuser body has a brass clamp ring with 2-lock knobs
Accessory end-ring with tilt capability and 4-lock knobs, an imaging insert threaded for Imaging Systems and a 2" accessory insert provide all the versatility needed for a comprehensive viewing or astro-photography configuration
In the Box
Tele Vue-NP101is 4"/101mm Refractor Telescope
  • Hard-Shell Carry Case
  • Sliding Metal Dew Shield
  • Threaded Imaging Insert
  • Screw-On Metal Lens Cover
  • 2.4" Focusmate Dual-Speed Focuser 10:1
  • 5-Year Warranty Against Manufacturer Defects
  • Table of Contents
    • 1Description
    Optical Design Apochromatic refractor
    Optical Lens Diameter 4"/101 mm
    Focal Length 540 mm
    Focal Ratio f/5.4
    Maximum Useful Magnification 250
    Maximum Visual Field 4.9°

    with 2-inch 55mm Plössl

    Resolving Power 1.1 arc-sec
    Mount Type Ring mount
    Eyepiece Barrel Diameter 2"
    Finderscope Not included
    Tripod Not included
    Motor None
    GO-TO Capability None
    PC Compatible None
    Power Source None
    Optical Tube Dimensions Length: 25.5" / 64.8 cm
    Weight OTA: 10.7 lb / 4.9 kg
    Packaging Info
    Package Weight 25.7 lb
    Box Dimensions (LxWxH) 32.4 x 12.0 x 11.1"

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