Sky-Watcher Esprit 120 ED APO refractor

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SKU:
SKW-S11420
UPC:
50234114202
MPN:
S11420
Condition:
New
Your price: $4,420.00

Description

Sky-Watcher Esprit 120 ED APO refractor

Included:

  • Helinear Track focusing system with zero image shift.
  • 8 x 50 right angle finderscope
  • 2-inch Star diagonal
  • 2-element field flattener
  • Camera adapter
  • D-style dovetail
  • Padded case

...

Specs

SKU: SKW-S11420
OpticalDesign: Esprit ED Triplet APO Refractor
Glass Elements: 3 Element 2 BK7/1 FPL-53(ED)
Aperture(mm): 120
Aperture(in): 4.7
FocalLength(mm): 840
FocalRatio: 7.0
DawesLimit(arc seconds): 0.97
RayleighLimit(arc seconds):: 1.15
LimMagnitude: 13.1
Central Obstruction(mm/%): 0/0
Spot Size(um)  
Back Focus(mm):  
Wavelength Range(nm):  
LightGrasp(>human eye): 294
Fastar(Hyperstar Available): NA
ImageCircle(mm):  
Focuser: 3.4 Inch 10:1 Ratio Dual Speed Rack and Pinion
Dovetail Bar: Vixen w/Tube Rings
Vented: N
MirrorLock: NA
Dewshield: Extendable
Finderscope: 8x50 RA Erect Image
Case: Y
Coatings: Fully Multi-Coated
Weight(lbs/kg): 22
MaxMagnification: 236
MinMagnification:  
   
Magnification w/Popular Focal Length Eyepieces Exit Pupli(mm)/Magnification(x)
40mm Focal Length: 5.7mm, 20x
32mm Focal Length: 4.6mm, 30x
25mm Focal Length: 3.6mm, 30x
18mm Focal Length: 2.6mm, 50x
13mm Focal Length: 1.9mm, 60x
10mm Focal Length: 1.4mm, 80x
8mm Focal Length: 1.1mm, 110x
5mm Focal Length: 0.7mm, 170x
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