Reducer / Corrector 0.77x for Esprit 120ED
Reducer / Corrector 0.77x for Esprit 120ED
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Prix habituel
€355,00 EUR
Prix habituel
Prix promotionnel
€355,00 EUR
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Apochromatic refractor telescope owners Espirit 120ED can now image with a reduced focal length. Although the nominal f/7 focal length is not excessive, it is still appreciable to be able to reduce exposure times or increase signal-to-noise ratio (the focal length ratio then becomes f/5.4).
Characteristics
- Resulting focal length ratio (with Espirit 120ED): f/5.4
- Number of lenses: 3 (FMC - Fully Multi Coated multilayer treatment)
- Backfocus: 55mm
- Image circle corrected (for APS-C): 34mm
- Female thread for 2" filter: Included
- Thread (camera side): M48x0.75
- Thread (telescope side): M74x1