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Next Stargazing Feb 18th
Next Stargazing Feb 18th

Optolong H-Alpha 7nm Filter - 2" Mounted

$259.00
SKU OPT-HA-7nm-2

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Sizes
  • 2" Mounted
Specifications
  • CWL(centre wavelength): 656.3nm
  • Fwhm: 7nm
  • Tpeak: <85%
  • Coating Wavelength: 300-1100nm
  • Optical Denisity: OD3
  • Surface Quality: 60/40
  • Transmitted Wavefront RMS: λ/4
  • Parallelism (arcsec): 30s