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Explore Scientific

Explore Scientific

Explore Scientific occupies a useful place in the market: optics and eyepieces built to a standard that used to cost considerably more, backed by a transferable warranty. Their waterproof, argon-purged wide-field eyepieces and FCD-100 air-spaced apochromatic refractors are the products most often recommended to observers who have outgrown entry-level gear. David Astro carries Explore Scientific products in Canada, held in stock for fast domestic shipping.

Our team uses these instruments in the field, including in the cold and damp conditions where the argon purging in the eyepiece line genuinely earns its keep. We can tell you where the line's strengths are and where a different brand suits your use better.

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Explore Scientific Counterweight Set for Truss Tube DOB

ES-DOB-CW

Counterweight Set for ES Truss Tube Dobsonians Includes Two Counterweights Balances Heavy Accessory Loads Direct-Fit Installation on Primary Mirro...

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$49.99 - $49.99
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Explore Scientific Dark-Sky Filter 77mm Slim
$179.99 - $179.99
$179.99
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$179.99

Explore Scientific Dark-Sky Filter 77mm Slim

ES-310260

77mm Standard Filter Thread Slim Profile Prevents Vignetting Optimized for Wide-Angle Lenses Suppresses Sodium Vapor Streetlight Glow Enhances Con...

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$179.99 - $179.99
$179.99
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Explore Scientific ED102-FCD100 Series Air-Spaced Triplet Telescope in Carbon Fiber + iEXOS-100-02 PMC-Eight Equatorial Tracker (Bundle)
$2,599.99 - $2,599.99
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Explore Scientific ED102-FCD100 Series Air-Spaced Triplet Telescope in Carbon Fiber + iEXOS-100-02 PMC-Eight Equatorial Tracker (Bundle)

ES-FCD100-102-CF-IEXOS100

Features premium HOYA FCD100 ED glass for superior color correction Air-spaced triplet optical design delivers high-contrast, sharp images Lightwe...

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Explore Scientific ED102-FCD100 Series Triplet APO Refractor

ES-FCD100-10207-02

102mm Aperture 714mm Focal Length (f/7) Air-Spaced Triplet Apochromatic Design Genuine HOYA FCD100 ED Glass Element 2.5" HEX Focuser with 10 lb Ca...

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Explore Scientific ED102-FCD100 Series Triplet Telescope - Carbon Fiber

ES-FCD100-10207-CF-01
1 in stock

102mm Aperture Air-Spaced Triplet Apochromatic Optics Premium HOYA FCD100 ED Glass Carbon Fiber Optical Tube Assembly 2.5" Hexagonal Rack & Pi...

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$1,775.07
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Explore Scientific ED127 Triplet APO f/7.5 with accessories - USED

Only 1 left!

ED127 telescope (good condition) 3" 0.7x reducer from Explore Scientific (brand new) 2" Field flattener from Explore Scientific (good condition) 6...

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$2,364.63
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$1,775.07
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Explore Scientific ED152 Triplet in Carbon Fiber

ES-TED15208CF-HEX33

152mm (6") Aperture f/8 Focal Ratio Air-Spaced Triplet Apochromatic Optics HOYA FCD1 Extra-Low Dispersion Glass Carbon Fiber Optical Tube 20.5 lbs...

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$249.99 - $249.99
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Explore Scientific ED80 Case

ES-CC080-01

Designed specifically for Explore Scientific ED80 Telescopes Exterior Dimensions: 18" x 13" x 8" Weight: 11 lb (5.0 kg) Interior: Pre-molded custo...

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$249.99 - $249.99
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Explore Scientific ED80 Essential Series Air-Spaced Triplet Refractor Telescope (Bundle)
$1,199.99 - $1,199.99
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Explore Scientific ED80 Essential Series Air-Spaced Triplet Refractor Telescope (Bundle)

ES-ED-0806-FF-IEXOS100

ED80 Air-Spaced Triplet Apochromatic Refractor iEXOS-100 GoTo German Equatorial Mount Wireless PMC-Eight Precision Motion Control System Includes ...

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Explore Scientific ED80 Essential Series Air-Spaced Triplet Refractor Telescope + Field Flattener f/5 to f/7 (Bundle)
$799.99 - $799.99
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Explore Scientific ED80 Essential Series Air-Spaced Triplet Refractor Telescope + Field Flattener f/5 to f/7 (Bundle)

ES-ED-0806-FF

80mm Aperture Air-Spaced Apochromatic Triplet Optics Features HOYA FCD1 Extra-Low Dispersion Glass Includes Field Flattener for f/5 to f/7 Telesco...

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$799.99 - $799.99
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Explore Scientific ED80 Essential Series Air-Spaced Triplet Refractor Telescope with 0.8x Focal Reducer and iEXOS-100-2 PMC-Eight Equatorial Tracker System
$1,199.99 - $1,199.99
$1,199.99
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Explore Scientific ED80 Essential Series Air-Spaced Triplet Refractor Telescope with 0.8x Focal Reducer and iEXOS-100-2 PMC-Eight Equatorial Tracker System

ES-ED-0806-FR0.8x-IEXOS100

80mm Air-Spaced Apochromatic Triplet Refractor iEXOS-100-2 GoTo Equatorial Mount with PMC-Eight Controller Includes 0.8x Two-Element Focal Reducer...

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Explore Scientific ED80-FCD100 Air-Spaced Triplet Refractor Telescope with 0.8x Focal Reducer (Bundle)
$1,699.99 - $1,699.99
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Explore Scientific ED80-FCD100 Air-Spaced Triplet Refractor Telescope with 0.8x Focal Reducer (Bundle)

ES-FCD100-0806-FR0.8x-IEXOS100

80mm Air-Spaced Triplet Apochromatic OTA Includes a matched 0.8x Focal Reducer iEXOS-100 Equatorial Mount with GoTo PMC-Eight wireless control sys...

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$1,699.99
$1,699.99 - $1,699.99
$1,699.99
Explore Scientific ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope (Bundle)
$1,699.99 - $1,699.99
$1,699.99
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$1,699.99

Explore Scientific ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope (Bundle)

ES-FCD100-0806-FF-IEXOS100

Complete astrophotography bundle with 80mm triplet refractor and GoTo mount 80mm aperture and 480mm focal length for wide-field imaging HOYA FCD10...

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$1,699.99 - $1,699.99
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Explore Scientific ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope + 0.8x Focal Reducer (Bundle)
$1,299.99 - $1,299.99
$1,299.99
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Explore Scientific ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope + 0.8x Focal Reducer (Bundle)

ES-FCD100-0806-FR0.8x

80mm Aperture 480mm Focal Length (f/6) HOYA FCD100 ED Air-Spaced Triplet Optics Includes 0.8x Focal Reducer/Corrector 2.5" Hexagonal Focuser De...

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$1,299.99 - $1,299.99
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Explore Scientific ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope + Field Flattener f/5 to f/7 (Bundle)
$1,299.99 - $1,299.99
$1,299.99
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$1,299.99

Explore Scientific ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope + Field Flattener f/5 to f/7 (Bundle)

ES-FCD100-0806-FF

80mm Aperture Triplet Apochromatic Refractor Features Hoya FCD100 ED Glass Element Air-Spaced Triplet Objective Lens Includes Field Flattener for ...

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Explore Scientific ED80-FCD100 Series Triplet APO Refractor

ES-FCD100-0806-02

Apochromatic Triplet Refractor Genuine HOYA FCD100 ED Glass Air-Spaced Optical Design Proprietary EMD Multi-Layer Coatings Heavy-Duty Hexagonal Fo...

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$1,119.99 - $1,119.99
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Explore Scientific ED80-FCD100 Triplet Refractor & iEXOS-100-02 Mount Bundle
$799.99 - $799.99
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Explore Scientific ED80-FCD100 Triplet Refractor & iEXOS-100-02 Mount Bundle

ES-ED-0806-FR0.8x

Features genuine HOYA FCD100 ED glass for superior color correction Air-spaced triplet optical design virtually eliminates chromatic aberration Li...

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Explore Scientific ES-ASCOM-Y Dual Plug Cable
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Explore Scientific ES-ASCOM-Y Dual Plug Cable

ES-ASCOM-Y

Connects DB9 and USB Mini-B devices simultaneously to one computer Enables ASCOM control for Explore Scientific PMC-Eight systems Features an inte...

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$34.99 - $34.99
$34.99
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Explore Scientific EXOS-2/EXOS-2GT Counterweight 9.9 Pounds - Black
$44.99 - $44.99
$44.99
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$44.99

Explore Scientific EXOS-2/EXOS-2GT Counterweight 9.9 Pounds - Black

ES-EXOS2CWB

Official component for Explore Scientific EXOS-2 and EXOS-2GT mounts Essential for balancing telescope optical tubes and imaging payloads Reduces ...

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$44.99 - $44.99
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Explore Scientific Explore FirstLight 80mm CF Telescope Go-To Tracker Combo with Solar Filter
$499.99 - $499.99
$499.99
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$499.99

Explore Scientific Explore FirstLight 80mm CF Telescope Go-To Tracker Combo with Solar Filter

ES-FLAR80640CF-IEXOS

80mm Refractor Telescope Lightweight Carbon Fiber Optical Tube iEXOS-100 PMC-Eight GoTo Equatorial Mount Includes Professional-Grade Solar Filter ...

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Explore Scientific Explore FirstLight 80mm CF Telescope with Solar Filter
$139.99 - $139.99
$139.99
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$139.99

Explore Scientific Explore FirstLight 80mm CF Telescope with Solar Filter

ES-FL-80640OTA-CF

80mm Achromatic Refractor Professional-Grade Solarlite Solar Filter Included 25mm Plössl Eyepiece and 90° Diagonal Smartphone and DSLR Camera Adap...

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$139.99 - $139.99
$139.99
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$139.99
$2,499.99 - $2,499.99
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Explore Scientific FCD100 Series 127mm f/7.5 Triplet APO Refractor - Aluminum with 2.5" HEX Focuser

ES-FCD100-127075-02

127mm (5") Aperture f/7.5 Focal Ratio Air-Spaced Triplet Apochromatic Optics HOYA FCD100 ED Glass Element 2.5" Hexagonal Rack-and-Pinion Focuser ...

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Explore Scientific FCD100 Series 127mm f/7.5 Triplet APO Refractor - Carbon Fiber with 2.5" HEX Focuser

ES-FCD100-127075-CF-01

127mm Aperture f/7.5 Focal Ratio / 952mm Focal Length Air-Spaced Triplet Apochromat with FCD100 Glass Carbon Fiber Optical Tube 2.5" HEX Focuser ...

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Explore Scientific Finder Scope Base with Mounting Screws

ES-FNDRBASEBLK

Weight: 1.4oz Dimensions: 50mm L x 51mm W x 25mm H Provides a secure base for Explore Scientific finder scopes Includes mounting screws for instal...

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The Explore Scientific Lineup

Explore Scientific covers visual and imaging from beginner through advanced, with the eyepiece series being the best-known part of the catalogue.

  • 62, 68, 82 and 92 degree eyepieces: Waterproof and argon-purged so internal surfaces cannot fog, which matters on humid Canadian summer nights and in rapid temperature drops.
  • 100 degree series: Very wide apparent field designs for immersive views, particularly effective in undriven Dobsonians where field width equals tracking time.
  • ED apochromatic refractors: FCD-100 and FCD-1 glass air-spaced triplets with carbon fibre and aluminium tube options, suited to both wide-field imaging and high-contrast visual use.
  • Truss-tube and solid-tube Dobsonians: Large-aperture visual instruments with collapsible designs that make transport realistic.
  • Maksutov-Newtonian and Cassegrain optics: Long focal length designs for planetary and lunar detail.
  • Diagonals, Barlows and accessories: Dielectric diagonals, focal extenders and finders designed around the rest of the line.

Why Choose David Astro for Explore Scientific

Explore Scientific's range is broad enough that the wrong choice within it is easy. We narrow it against your telescope and your sky.

  • Eyepiece series matched to focal ratio: The wider series perform best in fast telescopes where cheaper designs break down at the edge; in slow scopes the narrower series is often the better value.
  • Weight and balance checked: The 100 degree eyepieces are heavy enough to unbalance a small Dobsonian, and we will tell you before you order rather than after.
  • Authorized dealer: Full manufacturer warranty, with the transferable coverage properly registered and warranty handled domestically.
  • Canadian stock: In-stock items ship from Canada with no duties or brokerage fees for Canadian buyers.
  • Setup and collimation support: In-house help with first light on the larger Dobsonians and Newtonians.

Explore Scientific in Canada — Frequently Asked Questions

What does argon purging actually do?
It replaces the air inside the eyepiece with dry argon and seals it, so interior lens surfaces cannot fog when the eyepiece is moved between warm and cold air. In Canadian conditions that happens constantly.
Is the 82 or the 92 degree series better?
The 92 series has a wider field and better edge correction in fast telescopes, at more weight and cost. In an f/8 or slower scope the 82 series performs very close to it for considerably less.
Are the ED refractors good for imaging?
Yes, paired with a matched field flattener. The triplet designs control colour well enough for broadband imaging, and the focusers on the current models handle typical imaging trains.
Is the warranty valid if I buy in Canada?
Yes, and it is handled here. As an authorized dealer we register and service warranty claims domestically, without international shipping.

Choosing within the range?

Tell us your telescope and what you observe, and we will narrow it down. Canadian stock, warranty handled here.