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Introduction 

 
 

The spirit of perfection, by Sky-Watcher 

Designed with the discerning astronomer in mind, Sky-Watcher  top-of-the-line Esprit refractors 
deliver the kind of imaging performance one would expect from telescopes costing much more. With 
their three-element air spaced objective lens design, false color is completely eliminated, yielding 
exceptional contrast and sharpness. 
 
The 2.7" CNC machined 1:11 rotatable dual speed linear power focuser provides a smooth, rock-solid 
focusing with zero image shifts. The Esprit ED 80mm refractor comes with a 9 x 50 right angle finder 
scope, 2-inch Star diagonal, EQ5 (Vixen-style)  dovetail,  eyepiece  and padded case. Everything you 
need to get out under the stars.

 

 
The

 

2-element thread-on 48mm field flattener guarantees excellent field flatness across the entire 33 

mm  imaging plane.

 

Its  oversized lenses  ensure a larger and clearer aperture and also extremely 

minimized halation. 
 

Quick overview: 
 

 

80 mm apochromatic, 3-element refractor 

 

400 mm (f/5) 

 

Metallic high-transmission lens coatings 

 

2.7" CNC machined 1:11 dual-speed focuser 

 

Zero color fringing even on bright objects 

 

33 mm image circle 

 

Knife-edge Baffled Optical System 

 

2" Diagonal with dielectric coatings 

 

9x50 erect-image 90° finder scope 

 

EQ5 dovetail (Vixen style) bar 

 

Aluminum foam lined case 

 

Thread-on field flattener 

 

APS-C corrected focal plane  

 

 
 
 

 

 

NEVER USE YOUR TELESCOPE TO LOOK DIRECTLY AT 
THE SUN. PERMANENT EYE DAMAGE WILL RESULT. 

 

NEVER USE AN EYEPIECE-TYPE SOLAR FILTER. 

 

NEVER USE YOUR TELESCOPE TO PROJECT SUNLIGHT 
ONTO ANOTHER SURFACE; THE INTERNAL HEAT BUILD-
UP WILL DAMAGE THE TELESCOPE OPTICAL ELEMENTS. 

 

USE A PROPER SOLAR FILTER FIRMLY MOUNTED ON THE 
FRONT OF THE TELESCOPE FOR VIEWING THE SUN.  

 

WHEN OBSERVING THE SUN, PLACE A DUST CAP OVER 
YOUR FINDERSCOPE OR REMOVE IT TO PROTECT YOU 
FROM ACCIDENTAL EXPOSURE. 

 

NEVER LET A TELESCOPE POINTING THE SUN 
UNATTENDED. 

 

Summary of Contents for ESPRIT 100 ED Super APO

Page 1: ...1 INSTRUCTION MANUAL ESPRIT 80 ED Super APO Copyright Sky Watcher SL131204...

Page 2: ...cusing 6 Using the telescope for prime focus imaging 7 Installing the field flattener and a DSLR Digital Single Lens Reflex camera 7 Installing the field flattener and a CCD Charge Coupled Device came...

Page 3: ...rsized lenses ensure a larger and clearer aperture and also extremely minimized halation Quick overview 80 mm apochromatic 3 element refractor 400 mm f 5 Metallic high transmission lens coatings 2 7 C...

Page 4: ...cap and EQ5 Vixen style dovetail bar 2 The 9x50 erect image finder scope with tube rings and mount 3 The 2 50 8mm diagonal 4 The 2 element thread on field flattener used for photography only guarante...

Page 5: ...ly located and brought into the field of telescope see also Aligning the finder scope chapter on next page To install the finder scope on the telescope insert the positive dovetail of the finder scope...

Page 6: ...o focus When focus is reached lock it in position with the locking ring Choose a distant object that is at least 500 meters or yards away and point the main telescope at the object Adjust the telescop...

Page 7: ...or the other until the image in the eyepiece is nearly sharp To finely focus the image turn the 1 11 knob one way or the other until the image is perfectly sharp 3 Lock the screw below the focuser 1...

Page 8: ...Sky Watcher ESPRIT 80 Field flattener which is designed exclusively for this telescope Installing the field flattener and a DSLR Digital Single Lens Reflex camera Note Inside the box the 6mm ring spac...

Page 9: ...ombination of a CCD camera and its accessories can have any total length and any coupling thread A custom coupling ring is needed in order to assemble the CCD camera and its accessories called the opt...

Page 10: ...he other until the image is perfectly sharp 3 Lock the screw below the focuser 1 if a heavy load is attached pull the lever at 90 The image usually has to be finely refocused over time due to small va...

Page 11: ...drawtube gives an accurate indication on the focus position for various accessories Once the position for one accessory is known it is very easy to approximate the focus position Due to the precision...

Page 12: ...With Field Flattener 33 mm 1 3 in Optical Tube Length 44 6 cm 17 6 in Optical Tube Weight 4 05 kg 9 lbs Telescope Visual Backfocus 160mm 6 3 in Field Flattener Backfocus 61mm 2 4 in Threads specificat...

Page 13: ...support available alongside with the list of distributors and dealers worldwide on our worldwide internet site http www skywatcher com Sky Watcher offers this product with the best available quality i...

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