Astronomy Specialist



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The Skywatcher Evostar 120ED is an apochromatic doublet refractor that offers high performance for visual observers and astrophotographers. The objective lens features an element similar in performance to FPL-53, extra-low dispersion glass (ED) that minimizes the chromatic aberration for the best colour correction. As a result, planets and the moon are sharp at high magnification and for astrophotography the images have a high contrast. 

The 2" Crayford focuser is solid, precise and backlash free. It operates at two speeds due to the 10:1 reduction mechanism for an extra fine focusing adjustment that it is paramount for astrophotography and high resolution observations.

The objective lens is fully multi coated with the Skywatcher proprietary "Metallic High-Transmission Coating" (MHC) for an effective anti-reflection result that approaches a transmission of 99.5%.

The aluminium tube is light-baffled and blackened to ensure high contrast absorbing stray light.



Optical design

Apochromatic ED doublet

Objective diameter

120 mm

Focal length

900 mm

Focal ratio


Resolving power

1 arc second

Stellar limiting magnitude


Max. magnification

240 x

Light gathering power

294 times the human eye

Mount attachment

Tube rings on Vixen bar


Crayford dual speed (10:1)

Tube weight

5.2 kg

Tube length

620 mm

Tube diameter

143 mm





  • Evostar 120ED with dual speed focuser
  • 2" mirror diagonal (90°)
  • 2" to 1.25" adapter for the diagonal
  • 2" to 1.25" adapter with M42 thread 
  • 8x50 finderscope with fast release bracket
  • Eyepiece LET 28mm
  • Tube rings with Vixen style bar
  • Piggyback 1/4" screw with camera locking nut
  • Foam-lined aluminium carrying case
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