Sky-Watcher 80/400mm Esprit 80ED APO 1:10 Pro Triplet Refractor Telescope - Ultimate Precision Optics
Experience the pinnacle of optical perfection with this premium ED APO triplet refractor telescope featuring world-class Ohara FPL-53 glass. Designed for serious astrophotographers and demanding visual observers, this 80/400mm masterpiece delivers breathtaking color-accurate images that will transform your astronomical pursuits.
World-Class Ohara FPL-53 Optics
At the heart of this exceptional telescope lies a sophisticated three-element objective lens combining Ohara FPL-53 Extra-Low Dispersion (ED) glass with two additional precision-crafted elements. This advanced optical design virtually eliminates chromatic aberration, delivering high-contrast, color-perfect images even when observing the brightest objects like Venus, the Moon, or brilliant stars.
Ohara is a German company based in Hofheim in the Taunus mountains and stands as a world leader in the manufacture and development of optical glass. The FPL series glasses were specifically developed by Ohara for astronomical applications, representing the cutting edge of optical technology.
Perfect for Astrophotography Excellence
This telescope comes equipped with an integrated threaded field flattener specifically designed for astrophotographers. The fast f/5 focal ratio combined with the 80mm aperture provides excellent light-gathering power, allowing shorter exposure times and capturing stunning detail in deep-sky objects. Say goodbye to star distortion at the edges of your frames - the field flattener ensures pin-sharp stars across the entire imaging field.
Professional-Grade Dual-Speed Focuser
Achieving perfect focus has never been easier! The telescope features a premium 2.7-inch (68.6mm) fully rotating dual-speed Linear Crayford focuser with an impressive 1:11 reduction ratio. This high-load-capacity focuser provides both coarse and ultra-fine focusing control, essential for critical astrophotography work. The full rotation capability allows you to position your camera or eyepiece at any angle for maximum comfort and convenience.
Thoughtful Design Features
Every detail has been carefully considered:
- Retractable dew shield - protects the objective from dew formation during long observation or imaging sessions
- Multi-coated optics - maximizes light transmission and contrast while minimizing reflections
- Internal baffles - effectively suppress stray light for enhanced contrast
- Integrated Vixen/Celestron 1.75" dovetail bar - mount-ready for immediate use with standard equatorial mounts
- Lightweight 4kg design - portable enough for travel yet substantial enough for stability
Key Advantages at a Glance
- High-contrast optics without color fringing
- Excellent light-gathering for astrophotography
- Fully multi-coated optics with internal baffles
- 1:11 dual-speed Linear Crayford focuser with high load capacity
- Premium Ohara FPL-53 ED glass - astronomical grade
- Integrated field flattener for distortion-free imaging
Technical Specifications
- Optical Design: ED APO triplet refractor
- Aperture: 80mm
- Focal Length: 400mm
- Focal Ratio: f/5
- Glass Type: Ohara FPL-53 ED triplet
- Focuser: 2.7" (68.6mm) dual-speed Linear Crayford, 1:11 ratio
- Focuser Rotation: Full 360°
- Dew Shield: Retractable
- Dovetail Bar: Integrated Vixen/Celestron 1.75" standard
- Field Flattener: Integrated with threaded connection
- Coatings: Fully multi-coated
- Net Weight: 4 kg
Who Is This Telescope For?
This premium apochromatic refractor is perfect for:
- Serious astrophotographers seeking color-perfect images
- Advanced visual observers who demand the best optical quality
- Astronomers wanting a high-performance, portable instrument
- Those upgrading from achromatic refractors to true APO performance
- Anyone who refuses to compromise on image quality
The Ultimate Portable Observatory
At just 4 kilograms, this telescope strikes the perfect balance between optical performance and portability. It's light enough to transport easily to dark-sky sites, yet provides the optical quality typically found only in much larger, heavier instruments. The integrated dovetail bar means you can mount it on your equatorial mount in seconds and start observing or imaging immediately.
Investment in Excellence
When you choose a telescope with genuine Ohara FPL-53 glass, you're investing in optics developed specifically for astronomical applications by world leaders in optical glass technology. This isn't just another ED doublet - it's a precision-engineered triplet that delivers truly apochromatic performance across the visual spectrum and beyond.
Whether you're capturing the delicate structure of distant galaxies, the intricate details of planetary surfaces, or simply enjoying the pure pleasure of perfectly color-corrected visual observation, this 80/400mm ED APO triplet will exceed your expectations night after night.
Specifications
Type of telescope:
ED & Apochromats
Optical scheme:
Apochromat Triplet
Focal length:
400 mm
Aperture:
80 mm (3.15″)
Aperture ratio:
5
Resolving capacity:
1.75"
Limit value:
13.3 magnitude
Light gathering capacity:
130x
Product range:
Esprit
Max. useful magnification:
160x
Connection type:
2.7″
Mounting:
No mount
Recommended for:
Advanced, Experienced
Application area:
Astrophotography, Deep Sky observation, Planets observation, Nature observation
Package contents of "Sky-Watcher Esprit 80ED 80/400 1:11 Pro Apochromatic Triplet Refractor OTA":
✅ ED APO refractor 80/400 mm
✅ 2.7″/2″ threaded reducer
✅ M48 adapter
✅ Vixen-type dovetail bar
✅ 9x50 finder scope
✅ 2″ star diagonal
✅ Field flattener / reducer
✅ Carrying case
Typical magnifications
The recommended magnification is highlighted in yellow.
D = telescope aperture in millimeters
