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Skywatcher Esprit 80ED Super APO 80mm Triplet refractor The Sky-Watcher Esprit line of high-quality ED Triplet APO refractors will perform flawlessly whether you enjoy it as a visual instrument or use it as a giant lens to image the Universe with one of today's amazing CCD cameras.
The designers of this telescope line concentrated on the desires and requirements of the avid astro-imager, from a three-element apochromatic objective with included thread-on field flattener to the beefy oversized micro-focuser.
The air-spaced ED APO optics are fully multi-coated for extra clarity, contrast, and protection, and the two-element corrector, which comes standard with the Sky-Watcher Esprit, will ensure a flat field across the entire focal plane. This system produces a 33mm image circle, and you have about 75mm of back focus for plenty of imaging accessories.
The dew shield, when attached, will protect the optics from dew and help increase contrast by blocking stray light that might otherwise strike the glass. However, the shield is removable when necessary in order to shorten your OTA for storage and travel. The Helinear Track Focusing System, a Sky-Watcher exclusive, is a rock-solid 2.7" rack & pinion focuser that will perform smoothly, without image shift, due to the extra support rail on the top of the drawtube.
The micro focuser allows you to make course and fine adjustments to focus, and the knobs are easy to turn, even with cold hands or with gloves on. A thread-on step down ring takes the opening down for 2" accessories, and a 2" to 1.25" adapter is included in the package. Accessories are a big part of any telescope system, and Sky-Watcher wants to make sure that you start out right.
Included with every Esprit refractor is:
* 2" dielectric diagonal
* 9 x 50 RA erect-image finderscope
* Canon camera T mount adapter
* Dovetail bar
* Premium aluminum foam-lined hard case.
Telescope Series Sky-Watcher Esprit
Optical Design Refractor - Apochromatic
Mount Type None - Optical Tube Only
Telescope Aperture 80mm(3.15")
Telescope Focal Length 400mm
Telescope Focal Ratio f/5
Highest Useful Magnification 120x
Focuser 2.7 inch.
Imaging circle diameter 33mm.
Resolution 1.45 arc seconds.
Glass Extra Dispersion ED FPL53.
Back focus with field flattener fitted 75mm.
Optical Coatings Fully Multi-Coated
Dew Shield Included? Yes
Length of Optical Tube 17.375" with Dew Shield in Place
Optical Tube Weight 3.99Kgs.
Tube Colour or Finish Gloss White
Finder Included 9 x 50 Optical Finder
* Shipping Dimensions 39 X 50 X 67 cm3
* Shipping Weight 18 kg
Option: Reducer Flattener 0.8X also available - this is an exclusive option only available from Astronomy Alive.
Purchase with confidence from Astronomy Alive - a Skywatcher Australian Pro dealer.