-40%
1.25
1.25
1.25
1.25

1.25" /2" Optolong L-Pro Filter for Astro Telescope Eyepiece lens

$ 78.67

Availability: 100 in stock
  • MPN: Does Not Apply
  • Return shipping will be paid by: Buyer
  • Country/Region of Manufacture: China
  • Compatible Series: Universal
  • Condition: New
  • Item must be returned within: 30 Days
  • Type: Filter
  • Compatible Model: See detail
  • Features: See detail
  • Brand: Optolong
  • Restocking Fee: No
  • All returns accepted: Returns Accepted
  • Refund will be given as: Money Back
  • Compatible Brand: Universal

    Description

    1.25inch/2inch Optolong L-Pro Filter for Astronomy Telescope
    Fine-optically polishing for double-sides—— Ensure accurate λ/4 wavefront and <30 seconds parallalism over the both surfaces
    Ultrasonic wave cleaning substrate with purified water—— Cleanup by 13 purified water tank to remove inpurities and dust effectively
    Iro source assisted coating—— For durability and resistance to scratching, as well as stability on CWL (central wavelength) no deviation affected by temperature change.
    Constantly stringent quality testing processes—— Each filter was tested by spectrophotometer and laser interferometer testing spectrum and wavefront to ensure market filter is qualified product
    Specifications
    · Tpeak: T>90%
    · Spectrum: 380-750nm
    · Optical Density: Light pollution emission is blocked 90%
    · Surface Quality: 60/40
    · Transmitted Wavefront RMS: λ/4
    · Parallelism (arcsec): 30s
    Package Details
    ·
    1x 1.25inch/2inch Optolong L-Pro Filter