Reducer / Corrector 0.77x for Spirit 150ED
Reducer / Corrector 0.77x for Spirit 150ED
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Prix habituel
€355,00 EUR
Prix habituel
Prix promotionnel
€355,00 EUR
Prix unitaire
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Espirit 150ED apochromatic refractor owners can now image with a reduced focal length. Although the nominal f/7 focal ratio is not excessive, it is 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 (Fully Multi Coated FMC treatment)
- Backfocus: 55mm
- Corrected image circle (for APS-C): 34mm
- Female threading for 2" filter: Included
- Threading (camera side): M48x0.75
- Threading (telescope side): M74x1