Description: 1.25inch 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 Optolong L-Pro Filter
Price: 134.1 USD
Location: Zhengzhou
End Time: 2024-09-30T00:54:41.000Z
Shipping Cost: 0 USD
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Item Specifics
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Return policy details:
Brand: Optolong
MPN: Does Not Apply
Country/Region of Manufacture: China
Compatible Brand: Universal
Type: Filter
Size: 1.25 in
Compatible Series: Universal
Compatible Model: Universal
Features: See detail
Unit Quantity: 1
Unit Type: Unit
