Tele Vue NP127fli f/5.3 Astrograph APO Refractor Telescope (OTA Only)

Tele Vue NP127fli f/5.3 Astrograph APO Refractor Telescope (OTA Only)

Tele Vue NP127fli f/5.3 Astrograph APO Refractor Telescope (OTA Only)

B&H # TENPF5055 MFR # NPF-5055
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Expected availability: 3-7 business days

Product Highlights

  • 127mm Aperture
  • Nagler-Petzval APO Refractor
  • 680mm Focal Length, f/5.3 Focal Ratio
  • Built-In Large Field Corrector Lens
  • Hard Carrying Case Included
  • Purpose-Built for Astrophotography
  • Vixen-Style Dovetail Saddle
  • OTA Only
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  • 1Description

The product of a corroboration between Tele Vue Optics and Finger Lakes Instrumentation (FLI), the NP127fli f/5.3 Astrograph APO Refractor Telescope is a purpose-built wide-field astro-imaging optical tube assembly (OTA) made to specifically work with FLI's ultra-precise Atlas Focuser, CenterLine filter wheel, and ProLine imaging cameras. Since the designer's intent was to create an astro-imaging instrument its performance has been engineered with an emphasis on superior performance featuring a 127mm aperture, 680mm focal length, and a fast f/5.3 focal ratio.

The telescope's Nagler-Petzval refractor optical configuration was designed by Tele Vue's founder Al Nagler with its objective consisting of five lens elements set in three groups configured with a two-element full aperture objective in the front and a two-element sub-aperture doublet set back in the optical tube. The NP17fli has a built-in Tele Vue Large Field Corrector lens that corrects for chromatic and spherical aberrations to produce clear and crisp images with true color rendition across the entire field of view. An image plane correction system enables all objects through the entire depth of field, no matter their distances from each other, to be brought into perfect focus.

Tele Vue and FLI have designed an imaging system that not only produces superior images, but is uniquely capable of handling large imaging rigs. These large rigs can have multiple peripherals such as filter wheels, off-axis guiders, and CCD cameras; and the often uneven weight distribution can lead to damaging torque on delicate focusers and OTAs. The NP127fli was conceived, designed, and built to eliminate these problems and provide an imaging platform that can handle complicated rigs without a problem.

The OTA has been specifically designed to perfectly position the FLI Atlas focuser near the center of its travel, and the Large Field Corrector lens sits within the Atlas and is properly located to accommodate the combined path length of FLI's CenterLine filter wheel and ProLine cameras
Nagler-Petzval refractor telescope co-designed by Tele Vue's founder Al Nagler
127mm aperture
680mm focal length, f/5.3 focal ratio
Apochromatic 3-group/5-element lens design corrects for spherical and chromatic aberrations
Built-in Tele Vue field flattener corrects for spherical aberrations to produce images without distortion across the entire field of view
Image plane tilt correction system enables crisp focusing of all objects through the entire depth of field
Anti-reflection fully multi-coated optics
4.3° angle of view will cover imaging chips up to 52mm diagonal
To be used with compatible user-supplied mount and tripod
Vixen-style dovetail saddle
Hard protective carrying case
In the Box
Tele Vue NP127fli f/5.3 Astrograph APO Refractor Telescope (OTA Only)
  • Screw-On Metal Lens Cover
  • Mounting Rings
  • Hard Carrying Case
  • Limited Five-Year Warranty
  • Table of Contents
    • 1Description
    Optical Design Apochromatic Refractor
    Aperture 5" (127 mm)
    Focal Length 680 mm
    Focal Ratio f/5.3
    Maximum Image Circle 4.3°
    Focuser FLI Atlas
    Finderscope None
    Tripod None
    Mount Type Vixen-style dovetail saddle
    Optical Tube Length 35.8" (90.9 cm), without FLI hardware
    Weight 15.7 lb (7.1 kg)
    Packaging Infoewsrtyeeudwbztszeurdyqrfyuccasetrwavsx
    Package Weight 32.0 lb
    Box Dimensions (LxWxH) 41.0 x 12.0 x 10.0"
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