1X 1.25\" Optolong LRGB Planetary Astronomical Filter Set For Deep Sky Gazing For Sale
![1X 1.25\](telescope-image-large/g/oaEAAOSwFN9d0fVf/s-l1600/1X-1-25-Optolong-LRGB-Planetary-Astronomical-Filte.jpg "1X 1.25\")
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1X 1.25\" Optolong LRGB Planetary Astronomical Filter Set For Deep Sky Gazing:
$229.00
1.25" Optolong LRGB Planetary Astronomical Filter Set For Deep Sky Gazing Fine-optically polishing for double-sides—— Ensure accurate λ/4 wavefront and <30 seconds parallalism over the both surfacesUltrasonic wave cleaning substrate with purified water—— Cleanup by 13 purified water tank to remove inpurities and dust effectivelyIro 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 productSpecifications:
- Tavg: T>95%
- Coating Wavelength: 300-1050nm
- Optical Denisity: OD3
- Surface Quality: 60/40
- Transmitted Wavefront RMS: λ/4
- Parallelism (arcsec): 30s
Package Details
- 1x 1.25inch LRGB Deep Sky Imaging Filter
