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Baader 1.25" Double Stacked Solar Continuum Filter with Baader ND3.8 AstroSolar Film

£149.00
SKU 2458392

Availability: Immediate Dispatch

  • 1¼" Double Stacked Baader Solar Continuum Filter. 8nm / CWL 540nm.
  • Includes 1x AstroSolar® Photo Film OD 3.8 20x29 cm. The filter includes two Baader Solar Continuum Filters in a single filter cell which have been stacked for even higher contrast.
  • Enhances the contrast and reduces the effect of atmospheric turbulence.
  • This filter must be used in conjunction with a Baader Herschel Wedge or Baader AstroSolar® Safety Film 5.0 (not included) for solar observations otherwise equipment damage may occur. The included Baader AstroSolar® Photo Film 3.8 must not be used for visual observation but only for solar photography (e.g. lucky imaging).
Description

Ensures highest contrast in the photosphere of the sun. The filter works as a monochrometer - suppressing the effects of the atmospheric turbulence and results in images that are significantly sharper. Owners of SCTs and refractors will benefit as red and blue wavelengths are completely excluded, with the transmission area peaking at 535nm where telescope optics are sharpest and free from chromatic aberrations.

Specifications

MANUFACTURER Baader Planetarium
SKU (#) 2458392
EAN CODE 4047825009371
WEIGHT (KG) 0.026
TRANSMISSION RANGE 536 – 544 nm
FILTER THICKNESS (WITHOUT CELL) 2 mm
HBW (HALFBANDWIDTH) 8nm
CWL (CENTRAL WAVELENGTH) 540 nm
AR-COATING dielectrically coated, planeoptically polished
SPECIAL FEATURES double stacked
FILTER SIZE 1 25 inch
FILTER USAGE Contrast Enhancement, Solar
FILTER MOUNTED Mounted (classic 8mm)
TYPE OF FILTER Narrowband
SINGLE OR SET? Single Filter
FILTER SHAPE round