Description
Details
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
Reference Spectrum
Manufactruring Technique
- 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
Package Details
- Silver Cardboard Box
- Plastic PP Case
- Imported high pressure EVA case lining
Additional Information
Additional Information
Manufacturer | Optolong |
---|---|
Name | Optolong H-Alpha 7nm 1.25" (31.8mm) v.2 |
MPN | HA-1 |
EAN | N/A |
Warranty | 2 Years |
-- TECHNICAL FEATURES -- | ⬇︎ |
Diameter | 1.25" (31.8mm) |
Reviews
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Optolong H-Alpha 7nm 2" (50.8mm) v.2
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