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Filter Narrowband Cuts Light Pollution For Astronomy Telescope 1.25 Inch
Filter Narrowband Cuts Light Pollution For Astronomy Telescope 1.25 Inch
Filter Narrowband Cuts Light Pollution For Astronomy Telescope 1.25 Inch
Filter Narrowband Cuts Light Pollution For Astronomy Telescope 1.25 Inch
Filter Narrowband Cuts Light Pollution For Astronomy Telescope 1.25 Inch
Filter Narrowband Cuts Light Pollution For Astronomy Telescope 1.25 Inch
Filter Narrowband Cuts Light Pollution For Astronomy Telescope 1.25 Inch

Filter Narrowband Cuts Light Pollution For Astronomy Telescope 1.25 Inch

$ 61.59

Availability: 100 in stock
  • Manufacturer Warranty: None
  • Size: 1.25 in
  • Condition: New
  • Country/Region of Manufacture: China
  • Compatible Brand: Universal
  • Brand: Unbranded
  • All returns accepted: Returns Accepted
  • Item must be returned within: 60 Days
  • Compatible Series: Universal
  • Return shipping will be paid by: Buyer
  • Refund will be given as: Money Back
  • Type: Color
  • Custom Bundle: No
  • Color: #11 Yellow Green
  • MPN: Does not Apply

    Description

    Filter Narrowband Cuts Light Pollution For Astronomy Telescope 1.25 Inch
    Features:
    Filter substrate is fine-optically polished to 1/4 wave and <30 parallelism over both surfaces.
    Suitable for visual observation on most emission nebulae, planetary nebulae and supernova remnants.
    Suitable for viewing on bright nebulae like M42 Orion Nebula in heavy light pollution.
    Use with a large aperture telescope under clear and dark viewing conditions with good seeing.
    Narrowband filter do not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula.
    Thin metal cells have a clear aperture of 26mm for 1.25" filters
    Each filter comes with a plastic case with high pressure EVA case lining
    Specification:
    1,Blocking area: 400-700nm
    2,Transmittance: 90% at 495.9nm and 500.7nm
    3,FWHM: 18±2nm
    4,Thickness: 1.85mm
    5,Surface quality: 60/40 (Refer to MIL-O-13830)
    6,Diameter: 1.25 inch
    7,Weight: 5.4g
    Package Includes
    1 x SV115 1.25" filter with a case