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Baader Ultra Narrowband O-III CCD-Filter 50 X 50 MM (4,5nm)
- Manufacturer: Baader Planetarium
- UPC: 4047825034168
- MPN: FOIIINU-SQ50
- SKU: FOIIINU-SQ50
- Last price was: $567.00
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Availability: Backorder
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- Premium grade O-III CCD-filter for fast optical systems f/8 to f/3
- IR-blocked
- NO halos, NO reflections, NO ghosting
- non-aging sealed coating edges
Baader's New Ultra Narrowband Enforced Filters
These three sizes of Ultra-Narrowband filters open up the extremely narrow H-alpha, O-III, and S-II world. This enforced contrast provides more signal of the faintest nebula detail. Manufacturing such ultra-narrow filters requires extreme coating homogeneity and very high Center Wavelength Precision, which these filters have been designed for. Designed for use on optical systems from f/10 to f/3.5.