Explore Scientific 127mm f/7.5 Essential Apochromatic FCD100 ED Triplet Refractor Telescope (OTA only, 3" Focuser)

Explore Scientific 127mm f/7.5 Essential Apochromatic FCD100 ED Triplet Refractor Telescope (OTA only, 3" Focuser)

Explore Scientific 127mm f/7.5 Essential Apochromatic FCD100 ED Triplet Refractor Telescope (OTA only, 3" Focuser)

B&H # EXFCD100127T MFR # FCD100-127075-T3-01
Explore Scientific 127mm f/7.5 Essential Apochromatic FCD100 ED Triplet Refractor Telescope (OTA only, 3" Focuser)

Explore Scientific 127mm f/7.5 Essential Apochromatic FCD100 ED Triplet Refractor Telescope (OTA only, 3" Focuser)

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Expected availability: 7-14 business days

Product Highlights

  • 127mm Aperture
  • 952mm Focal Length, f/7.5 Focal Ratio
  • Hoya FCD100 Extra Low Dispersion Glass
  • Proprietary EMD Enhanced Multi-Coatings
  • Vixen-Style Dovetail Plate
  • Apochromatic Triplet Lens System
  • Mounting Cradle-Ring with Handle
  • Two-Speed 3" Rack-and-Pinion Focuser
  • 1.25" Eyepiece Adapter
  • 90° Star Diagonal
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Focuser: 3"/2-Speed Rack-and-Pinion

2" Single-Speed

Not available with current selections

2"/2-Speed Rack-and-Pinion

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2.5" HEX Focuser

Not available with current selections

3"/2-Speed Rack-and-Pinion

OTA Material: Aluminum

Aluminum Carbon Fiber

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Aperture, Glass: 127mm, Hoya FCD100 ED

102mm, Hoya FCD100 ED

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102mm, Standard ED

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127mm, Hoya FCD100 ED 127mm, Standard ED

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80mm, Hoya FCD100 ED

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80mm, Standard ED

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This item is noncancelable and nonreturnable

$0.00 Tax Collected Outside NY and NJ

Price:  $2,879.99

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  • 1Description

The ED127 127mm f/7.5 Essential Apochromatic ED Triplet Refractor Telescope from Explore Scientific features a triplet apochromatic lens system with Hoya's exceptionally engineered and crafted FCD100 extra-low dispersion (ED) glass and Explore Scientific's proprietary anti-reflection EMD fully multi-coated optics. This combination of glass, lenses, and coatings virtually eliminates chromatic and spherical aberrations for clear and bright images without distortion across the entire field of view, with true color rendition. This is a powerful optical tube assembly that can be used to see detailed views of celestial objects from the Moon to deep sky objects like nebulae and galaxies. It is also portable enough to be used as a grab-and-go option over larger and heavier scopes or set up on a dual-mount rig for astrophotography/astroimaging.

A mounting cradle-ring clamps over optical tube assembly (OTA). The cradle-ring allows the user to adjust the orientation and position of the scope relative to the mount to optimize viewing comfort and balance, while avoiding interference with other equipment. The scope is offered without a mount or tripod, but a Vixen-style dovetail plate makes it compatible with any alt-az or equatorial mount with a Vixen-style saddle. Its 3-inch two-speed rack-and-pinion focuser helps make fine-focusing fast and precise, while being able to handle heavy loads. The exceptionally large 3" size is ideal for covering large imaging sensors when using astrophotography rigs. A 90° star diagonal is also included for more comfortable viewing. The mirror has dielectric coatings for a 99% light transmission for minimal light loss when using it.

Optical Performance
  • 127mm objective lens
  • 952mm focal length
  • Focal ratio: f/7.5
  • Refractor-style optical design
  • Hoya FCD100 extra-low dispersion (ED) glass all but eliminates chromatic aberration for enhanced contrast and accurate color rendition across the entire visible spectrum
  • Triplet apochromatic lenses reduces spherical aberrations and corrects distortion across the entire field of view
  • Proprietary anti-reflection EMD enhanced multi-coatings on all optics improve light transmission to help produce bright and clear high-contrast images
  • Resolution: 0.9 arcsec
Use and Handling
  • Two-speed 3" Starlight Instruments rack-and-pinion focuser
  • Bracket for user-supplied finderscope
  • One-piece 2" 90° star diagonal with highly-reflective dielectric coatings for up to 99% light transmission
  • 2" and 1.25" eyepiece adapters
Mount
  • Vixen-style dovetail plate included
  • User-supplied mount and tripod required
  • Compatible with any alt-az or equatorial mount with a Vixen-style saddle
  • Cradle-ring assembly for plate allows the scope orientation to be changed based on mount configuration
  • Integrated carry handle on cradle-ring assembly
UPC: 812257017812
In the Box
Explore Scientific 127mm f/7.5 Essential Apochromatic FCD100 ED Triplet Refractor Telescope (OTA only, 3" Focuser)
  • 2" ES Star Diagonal
  • 1.25" Eyepiece Adapter
  • Limited 1-Year USA Warranty, Extendable to Transferrable Lifetime Warranty with Registration
  • Table of Contents
    • 1Description
    Optical Design Apochromatic triplet refractor
    Aperture 5.0" (127 mm)
    Focal Length 952mm
    Focal Ratio f/7.5
    Resolution 0.9 arcsec
    Eyepiece Barrel Diameter 3"
    Use 2", 1.25" with included adapter
    Diagonal 90°
    Finderscope None
    Tripod None
    Mount Type Vixen-style dovetail
    Optical Tube Dimensions Diameter: 5.1" (13.0 cm)
    Length: 41.8" (1060 cm), with dew shield
    Length: 33.3" (849 cm), without dew shield
    Weight 22 lb (10 kg)

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