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Our Take
The Sky-Watcher 80 is an excellent moderate-cost, wide-field refractor for astrophotography. The build quality is excellent and includes a robust and smooth focuser. With the included thread-on field flattener, this scope is an excellent option for any astrophotographer.
Quick Overview
- 80 mm apochromatic 3-element refractor
- 400 mm (f/5)
- Fully multi-coated
- Thread-on field flattener
- 2.7" focuser w/micro focus
- 2" Diagonal with dielectric coatings
- 9x50 RA erect-image finderscope
- Canon camera adapter
- Tube rings with CG5 style dovetail bar
- Aluminum foam lined case
- 33mm image circle
- OTA Weight: 8.8lbs.
- OTA Length: 17.375" (fixed dew shield)
- Telescope Back Focus: >160mm
- Flattener Back Distance: 66mm
This telescope does not come with a mount.
Unsurpassed Performance
Esprit three-element air spaced optics deliver images equal to scopes costing thousands of dollars more
Two-element Field Corrector
All Sky-Watcher USA Esprits include a two- element field corrector that guarantees a flat field across the entire imaging plane
Designed wtih the discerning astrophotographer in mind, Sky-Watcher USA’s top-of-the-line Esprit refractors deliver the kind of imaging performance one would expect from telescopes costing thousands of dollars more.
With their three-element air spaced objective lens design, false color is completely eliminated, yielding exceptional contrast and sharpness. The included 2-element field corrector guarantees a flat field across the entire imaging plane. The Sky-Watcher exclusive Helinear Track focusing system provides a smooth, rock-solid focuser with zero image shift.
All Sky-Watcher USA Esprit refractors come with a 9 x 50 right angle finderscope, 2-inch Star diagonal, 2-element field flattener, camera adapter, D-style dovetail and padded case. Everything you need to get out under the stars.
|
Model |
80 mm |
|
Optical design |
Apochromatic refractor |
|
Focal length |
400 mm |
|
F-ratio |
5 |
|
Back focus |
75 mm |
|
Image circle |
33 mm |
|
Lens elements |
3 |
|
Lens glass |
FPL-53 ED and Schott glass |
|
Focuser |
2.7 inch rack-and-pinion focuser |
|
Focuser travel |
60 mm |
|
Removable field corrector |
Yes |
|
Finderscope |
9 x 50 right angle, correct image |
|
Mount type |
V-style dovetail |
|
Length (extended/retracted) |
17.4 in/17.4 in |
|
Outer diameter |
4.875 in |
|
Tube weight (pounds) |
8.8 |