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

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$919.97 $849.99 Save $69.98

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The ED80 Essential Series Air-Spaced Triplet Refractor from Explore Scientific is a true apochromatic telescope designed for serious stargazing and disciplined imaging. Built around an 80mm aperture, it delivers bright, high-contrast views of the lunar surface, the delicate structure of Saturn’s rings, and deep-sky targets from the Messier catalog with remarkable color fidelity and edge-to-edge sharpness.

Why this telescope stands out

True diffraction-limited optics using genuine HOYA FCD1 ED glass and an air-spaced triplet design to virtually eliminate chromatic aberration. The result is crisp stars with natural color rendition across a wide, flat field.
High-contrast imaging achieved through proprietary EMD enhanced multi-layer coatings on all optical surfaces, maximizing light transmission while suppressing glare for every kind of observing—from planetary detail to faint deep-sky structure.
Compact, portable 80mm package with a 91 mm outside diameter tube, combining impressive light-gathering with grab-and-go practicality. It’s easy to carry, quick to set up, and flexible enough to pair with larger scopes for expanded imaging workflows.
2" rack-and-pinion focuser with two extension tubes ensures precise, repeatable focusing and ample back focus for camera setups. The included Hybrid Finder Scope Base is already mounted for fast alignment (finder scope not included).
Included 0.8x Focal Reducer unlocks wide-field imaging in a single, easy-to-use package. It shortens the focal length from 480 mm to 384 mm (f/6 to f/4.8) on the 80 mm class, and from 714 mm to 571 mm (f/7 to f/5.6) on the 102 mm equivalents, dramatically increasing brightness and field of view without a complex setup.
Back focus and threading compatibility with 55 mm (+/- 2 mm) back spacing and a threaded 42 mm T-ring interface, making camera attachment straightforward and reliable for astrophotography workflows.
Powerful Go-To tracking via the iEXOS-100-02 PMC-Eight Equatorial Tracker System, delivering precise object acquisition and smooth tracking so you can image or observe for longer sessions with fewer interruptions. This package includes two extra counterweights for balanced mounting.

Real-world use cases that maximize this setup

Wide-field astrophotography with the 0.8x reducer: capture sweeping star fields, large nebulae, and neighboring galaxies with excellent edge-to-edge sharpness and naturally vibrant colors.
Guided imaging on a larger telescope: the ED80’s compact size makes it an ideal portable guider or imaging companion, letting you separate guiding duties from a larger primary scope for longer, more productive sessions.
High-contrast visual sessions: enjoy crisp lunar terrain and planetary detail, including the graceful structure of Saturn’s rings, with color accuracy that stays true across the field.
Travel-friendly setup: lightweight enough for quick trips to dark-sky sites while offering serious optical performance once you’re there.

Who this is for

Astrophotographers who want a true apochromatic, color-corrected 80mm refractor that scales from wide-field imaging to guiding with a larger mount.
Amateur astronomers seeking a high-quality, compact instrument that delivers premium optics without sacrificing portability or ease of use.
Observers and shooters who value a robust go-to tracker system (iEXOS-100-02) paired with reliable mounting hardware and the flexibility to expand their setup over time.

Why choose this package over alternatives

Compared with smaller refractors, you gain significantly more light-gathering capability and brighter field views, thanks to the ED glass and high-contrast coatings, while maintaining a compact form factor.
The 0.8x focal reducer isn’t a gimmick—it materially expands your field of view and light capture, dramatically reducing exposure times for many of the most popular deep-sky targets without compromising optical quality.
With the iEXOS-100-2 tracker and two counterweights included, you have a ready-to-use, go-to tracking solution that simplifies alignment and enables longer, more productive imaging sessions from day one.

Practical tips to get the most from your ED80

Plan imaging with the reducer in mind: the broader field and faster f/ratio mean shorter exposures for the same signal-to-noise, but ensure you’ve accounted for the back focus requirements and camera spacing to maintain sharp corners across the frame.
Balance is key: use the included counterweights with the PMC-Eight system to achieve smooth slewing and accurate guiding, especially during long imaging runs.
Keep optics clean and aligned: wipe only with approved optical cloths and store in a protective case to preserve coatings and ED glass performance over time.
Pairing with larger telescopes: mount the ED80 on a larger instrument to separate guiding and imaging duties, expanding your imaging capabilities without sacrificing visual precision.

Category and heritage

As part of the Explore Scientific family, the ED80 Essential Series combines precision engineering with proven optical design. It sits at the intersection of accessible portability and professional-grade performance within the Cameras & Optics > Optics > Scopes > Telescopes category, making it a standout choice for serious hobbyists who demand true color fidelity, crisp detail, and a dependable, expandable imaging platform.

The device turns the 102 mm telescopes, with a focal length of 714 mm, into telescopes with a focal length of 571 mm: From f/7 to f/5.6.

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Effective Date: 11/18/2025

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Name: ED80 Essential Series Air-Spaced Triplet Refractor Telescope with 0.8x Focal Reducer and iEXOS-100-2 PMC-Eight Equatorial Tracker System
Brand: Explore Scientific
SKU: ES-ED0806-FR0.8X-iEXOS100
Price: 849.99 USD
Availability: InStock

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Explore Scientific Manufacturer's Warranty

Explore Scientific warrants products to be free from defects in materials and workmanship for the periods listed below. Register your product within 60 days of purchase for full warranty coverage.

Warranty Periods:

• Explore Scientific Branded Telescopes: Limited 1-Year USA Warranty (when registered within 60 days)

• Explore Scientific Branded Waterproof Eyepieces: Limited Lifetime USA Warranty (when registered within 60 days)

• Explore Scientific Branded Eyepieces: Limited 5-Year USA Warranty (when registered within 60 days)

• Electronics & Non-Electronic Telescope Accessories: Limited 1-Year USA Warranty (when registered within 60 days)

• FirstLight, Bresser, National Geographic Branded Products: Limited 2-Year USA Warranty (when registered within 60 days)

How to File a Claim: Return the product to Explore Scientific with proof of purchase and product registration. Explore Scientific will repair or replace the product at their discretion.

Full warranty terms: explorescientific.com/pages/warranty

ED80 Essential Series Air-Spaced Triplet Refractor Telescope with 0.8x Focal Reducer and iEXOS-100-2 PMC-Eight Equatorial Tracker System