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Optolong H-Alpha 7nm Telescope Filter - 2
Optolong H-Alpha 7nm Telescope Filter - 2
Optolong H-Alpha 7nm Telescope Filter - 2" Mounted for Astrophotography & Solar Observation
Sku: 55535083 in stock
$142.45
$259
45% Off
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Delivery & Return: Free shipping on all orders over $50
Estimated Delivery: 10-15 days international
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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
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For all orders exceeding a value of 100USD shipping is offered for free.

Returns will be accepted for up to 10 days of Customer’s receipt or tracking number on unworn items. You, as a Customer, are obliged to inform us via email before you return the item.

Otherwise, standard shipping charges apply. Check out our delivery Terms & Conditions for more details.


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