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Reducer / corrector 0.77x for Esprit 120ED

Reducer / corrector 0.77x for Esprit 120ED

SKU:skywatcher-SW0461

Regular price €355,00 EUR
Regular price Sale price €355,00 EUR
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APOCHROMATIC Esprit 120ED eyepiece owners can now image with a reduced focal length. Although the nominal f/7 focal length is not excessive, it is always appreciated to be able to reduce exposure times or increase the signal-to-noise ratio (the focal length ratio then becomes f/5.4).

Characteristics

  • Resulting focal length ratio (with Esprit 120ED): f/5.4
  • Number of lenses: 3 (FMC - Fully Multi Coated multilayer treatment)
  • Backfocus: 55mm
  • Image circle corrected (for APS-C): 34mm
  • Female threading for 2" filter: Included
  • Threading (camera side): M48x0.75
  • Threading (eyepiece side): M74x1
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