Baader Ultra Narrowband 3.5nm H-Alpha CCD Filter

£227.00
SKU 2459451

Availability: Immediate Dispatch

  • Baader Ultra-Narrowband 3.5nm H-Alpha CCD-Filter
  • Deep sky imaging use
  • For fast optical systems from f / 10 to f / 3.5
  • non-ageing sealed coating edges
Description

This premium grade ultra narrowband 3.5nm Baader H-Alpha (Ha) filter is for use with fast optical systems with focal ratios between f/3.5 to f/10. The filter also has non-ageing sealed coated edges for long life.

Specifications
TRANSMISSION RANGE H-Alpha
FILTER THICKNESS (WITHOUT CELL) 2 mm / 3 mm
HBW (HALFBANDWIDTH) 3.5nm
CWL (CENTRAL WAVELENGTH) 656.3 nm
AR-COATING dielectrically coated, plane-optically polished
FILTER USAGE CCD, Hα
TYPE OF FILTER Narrowband
SINGLE OR SET? Single Filter