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Reducer / corrector 0.77x for Esprit 150ED

Reducer / corrector 0.77x for Esprit 150ED

SKU:skywatcher-SW0462

Regular price €355,00 EUR
Regular price Sale price €355,00 EUR
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Owners of the Esprit 150ED apochromatic refractor can now image with a reduced focal length. Although the nominal f/7 focal ratio is not excessive, it's always appreciated to be able to reduce exposure times or increase the signal-to-noise ratio (the focal ratio then becomes f/5.4).

Characteristics

  • Resulting focal ratio (with Esprit 150ED): f/5.4
  • Number of lenses: 3 (FMC - Fully Multi Coated multi-layer treatment)
  • Backfocus: 55mm
  • Corrected image circle (for APS-C): 34mm
  • Female thread for 2" filter: Included
  • Thread (camera side): M48x0.75
  • Thread (telescope side): M74x1
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