Sky-Watcher

Used Esprit 120mm ED APO Triplet Refractor


  • Sale
  • $2,999.00
  • Regular price $3,400.00

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CONDITIONVery-Good condition. Only 3 years old. Includes case and original accessories. A few marks on the case from use, some felt peeling off the interior cap.

No shipping box, local only.

 

  • 120 mm apochromatic 3-element refractor
  • 840 mm (f/7)
  • Fully multi-coated
  • Thread-on field flattener
  • 3.0″ focuser w/micro focus
  • 2″ Diagonal with dielectric coatings
  • 9×50 RA erect-image finder scope
  • Canon camera adapter
  • Tube rings with CGE style dovetail bar
  • Aluminum foam lined case
  • 43mm image circle
  • OTA Weight: 22lbs.
  • OTA Length: 31.5″ Extended and 27.375″ Retracted
  • Back focus: 75mm

 

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 8 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.

 

Optical Info
Optical Design ED Triplet Refractor
Lens Coatings Fully Multi-Coated
Glass Type BK7 (2)/FPL-53(ED)
Primary Aperture (mm) 120
F/Ratio 7
Focal Length (mm) 840
Observational Info
Dawes Limit 0.97
Rayleigh Limit 1.16
Limiting Mag. 12.9
Minimum Magnification 17
Maximum Magnification 236
Light Gathering (compared to next size down) 44%
General Info
Focuser 3.4" Dual Speed R&P
OTA Length (Retract/Ext.) 27.4"/31.5"
OTA Outer Diameter 6.875"
OTA Weight (with accessories) 22 lbs
Accessories
Included Finder 8x50 RACI
Included Diagonal 2" Dielectric
Mounting Accessories Rings/D-Rail
Included Eyepieces None
Included Case Yes
Corrector Yes
SKU: U2109-S11420
Barcode: 050234114202