Explore Scientific FCD100 T3 Series ED127mm f/7.5 Apo Triplet Carbon Fiber Telescope (OTA only)

Explore Scientific FCD100 T3 Series ED127mm f/7.5 Apo Triplet Carbon Fiber Telescope (OTA only)

Explore Scientific FCD100 T3 Series ED127mm f/7.5 Apo Triplet Carbon Fiber Telescope (OTA only)

B&H # EXFCD100127F MFR # FCD100-127075-T3-CF
In Stock
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Product Highlights

  • 127mm Aperture Refractor OTA
  • 952mm Focal Length, f/7.5 Focal Ratio
  • Hoya FCD100 Anomalous ED Glass
  • Apochromatic Triplet Lens System
  • Proprietary EMD Enhanced Multi-Coatings
  • Vixen-Style Dovetail Plate
  • Lightweight Carbon Fiber Optical Tube
  • 3" Dual-Speed Rack-and-Pinion Focuser
  • 90° Dielectric Star Diagonal
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Focuser: 3"/2-Speed Rack-and-Pinion

2"/2-Speed Rack-and-Pinion

Not available with current selections

2.5" HEX Focuser

Special Order

3"/2-Speed Rack-and-Pinion

OTA Material: Carbon Fiber

Aluminum

Special Order

Carbon Fiber

Aperture, Glass: 127mm, Hoya FCD100 ED

102mm, Hoya FCD100 ED

Not available with current selections

102mm, Standard ED

Not available with current selections

127mm, Hoya FCD100 ED 127mm, Standard ED

Not available with current selections

80mm, Standard ED

Not available with current selections

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  • 1Description

Outfitted with upgraded optical glass, the Explore Scientific FCD100 T3 Series ED127mm f/7.5 Apo Triplet Carbon Fiber Telescope utilizes superior Japanese-made Hoya FCD100 extra low-dispersion (ED) and anomalous dispersion glass to correct chromatic aberration for true color fidelity and improved contrast. Complementing the glass is an apochromatic triplet lens configuration that corrects spherical aberration to improve resolution and sharpness, and further corrects chromatic aberration. These design features produce 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. The optical performance, when coupled with its large focuser, makes this an ideal OTA for astrophotography and imaging, or as a convenient grab-and-go option for fast observation sessions.

This version of the ED127 OTA is outfitted with a Starlight Instruments 3" rack-and-pinion dual speed focuser. Explore Scientific upgraded to this focuser to ensure full coverage of astrophotography gear with larger imaging sensors. The dual-speed configuration ensures ultra-precise focusing to properly split binary stars and resolve fine details single-speed focusers are unable to achieve. Its carbon fiber optical tube is temperature-resistant with reduced expansion/contraction due to temperature changes that can affect the fine focusing abilities. In addition to the resistance, the carbon fiber is as durable as aluminum but with a reduced overall weight.

Optical Performance
  • 127mm objective lens
  • 952mm focal length
  • Focal ratio: f/7.5
  • Refractor-style optical design
  • Hoya FCD100 extra-low dispersion (ED) and anomalous dispersion glass has a high refractive index to correct chromatic aberration for true color fidelity and improved contrast
  • Apochromatic triplet optical design corrects spherical aberration to improve resolution and sharpness, and further correcting chromatic aberration
  • Proprietary EMD enhanced multi-coatings on all optical surfaces
  • Resolution: 0.9 arcsec
Use and Handling
    Focuser:
  • Starlight Industries 3" focuser
  • Large focusing tube ensures full coverage of larger imaging sensors for astrophotography equipment
  • Dual-speed mechanism to achieve tack-sharp focus
  • Rack-and-pinion configuration to comfortably carry heavier loads
    Accessories:
  • Highly reflective 2" dielectric 90° star diagonal
  • 2" and 1.25" eyepiece adapter to use smaller barreled eyepieces/accessories
  • Factory-installed bracket for user-supplied finderscope
Construction Details
  • Carbon fiber optical tube eliminates focus change due to shrinking/expansion caused by temperature changes while reducing overall weight versus aluminum OTAs
  • Vixen-style dovetail plate for easy compatibility with a variety of mounts
  • Integrated dew shield helps to prevent external condensation while viewing
UPC: 812257018444
In the Box
Explore Scientific FCD100 T3 Series ED127mm f/7.5 Apo Triplet Carbon Fiber Telescope (OTA only)
  • 2" Eyepiece Adapter
  • 1.25" Eyepiece Adapter
  • 2" 90° Star Diagonal
  • Limited 1-Year USA Warranty, Extendable to Transferrable Lifetime Warranty with Registration
  • Table of Contents
    • 1Description
    Optical Design Refractor
    Aperture 127 mm
    Focal Length 952mm
    Focal Ratio f/7.5
    Eyepiece Barrel Diameter 3" directly into focus tube
    2" or 1.25" with included adapters
    Diagonal 2" 90° star
    Finderscope None
    Tripod None
    Mount Type Vixen-style dovetail
    Optical Tube Dimensions Diameter: 5.1" / 13.0 cm
    Length: 41.7" / 106.0 cm, with dew shield
    Length: 33.4" / 84.9 cm, without dew shield
    Weight 14.0 lb / 6.4 kg
    Packaging Infotwxdtzrsxfdeyevsdddfuetqztddeadsyr
    Package Weight 24.0 lb
    Box Dimensions (LxWxH) 37.5 x 11.5 x 11.0"
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