Explore Scientific 102mm f/7 Essential Apochromatic FCD100 ED Triplet Refractor Telescope (OTA only)

BH #EXFCD1001020 • MFR #FCD100-10207-01
Explore Scientific
Explore Scientific 102mm f/7 Essential Apochromatic FCD100 ED Triplet Refractor Telescope (OTA only)
Key Features
  • 102mm Aperture
  • 714mm Focal Length, f/7 Focal Ratio
  • Apochromatic Triplet Lens System
  • Hoya FCD100 Extra-Low Dispersion Glass
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The ED102 102mm f/7 Essential Apochromatic FCD100 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 versatile optical tube assembly (OTA) that is powerful enough to clearly see the planets and bright deep-sky objects. It has a relatively small form factor that makes it perfect as a portable grab-and-go option, or set up on a dual-mount rig for astrophotography/astroimaging.
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$1,899.99
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Explore Scientific ED102 Overview

  • 1Description
  • 2Optical Performance
  • 3Focuser
  • 4Mounting
  • 5Included Items

The ED102 102mm f/7 Essential Apochromatic FCD100 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 versatile optical tube assembly (OTA) that is powerful enough to clearly see the planets and bright deep-sky objects. It has a relatively small form factor that makes it perfect as a portable grab-and-go option, or set up on a dual-mount rig for astrophotography/astroimaging.

A mounting cradle-ring clamps over the 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 heavy-duty 2.5" hexagonal two-speed rack-and-pinion focuser helps make fine-focusing fast and precise, even when carrying heavy loads like large eyepieces or imaging 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

  • 102mm objective lens
  • 714mm focal length
  • Focal ratio: f/7
  • 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: 1.14 arc sec
  • Bracket for user-supplied finderscope

Focuser

  • Large 2.5" hexagonal drawtube resists flexing under heavy loads to ensure large eyepieces and imaging systems remain optically centered in the light path
  • Sturdy 2-speed rack-and-pinion focuser provides precise focus control
  • Focus lock prevents accidental movement in the focusing mechanism—ideal for imaging sessions
  • Drawtube is rated to carry up to 10 pounds of gear

Mounting

  • Optical tube assembly only—mount and tripod required for proper use, or mount on a larger scope for use with a guide camera
  • 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
  • Weight: 12 pounds

Included Items

  • One-piece 2" 90° star diagonal with highly reflective dielectric coatings for up to 99% light transmission
  • 1.25" eyepiece adapter to use the more common size eyepieces in the larger drawtube and diagonal holder
  • Extension tubes enable the user to achieve the proper back focus during imaging and astrophotography
UPC: 812257017614

Explore Scientific ED102 Specs

Optical Tube Assembly
Optical DesignApochromatic Triplet Refractor
Aperture102 mm / 4.1"
Focal Length714 mm
Focal Ratiof/7
Resolution1.14 Arcsec
FocuserRack-and-Pinion
Eyepiece Barrel Diameter1.25", 2"
Diagonal90° Star
FinderscopeNone
Mounting SystemVixen Style
General
BatteriesNone
GPSNo
Wi-FiNo
Weight12.0 lb / 5.5 kg
Packaging Info
Package Weight16.3 lb
Box Dimensions (LxWxH)28.3 x 10.8 x 8.5"
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