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Baader Planetarium Narrowband H-Alpha Filter 3.5nm, 50mm Square Filter


Price: $640.00


  • Manufacturer: Baader Planetarium
  • MPN: FHALNE-SQ50
  • SKU: FHALNE-SQ50
  • Availability: Ships from Warehouse

The three sizes of 3.5nm Enforced-Narrowband filters open up the extremely narrow 3.5nm H-alpha world.  This enforced contrast provides more signal of the faintest nebula detail.  Manufacturing such ultra-narrow filters requires extreme coating homogeneity and very high Center Wavelenth Precision, which these filters have been designed for. 







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