Riduttore/correttore 0,77x per Esprit 150ED
Riduttore/correttore 0,77x per Esprit 150ED
Nessuna recensione
Prezzo di listino
€355,00 EUR
Prezzo di listino
Prezzo scontato
€355,00 EUR
Prezzo unitario
/
per
Astronomy Store 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 appreciable to be able to reduce exposure times or increase 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