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The Ultra-Narrowband series comprises line filters with a very narrow full width at half maximum, recommended for optical systems with an aperture ratio of f/10 to f/3.5.

Due to the low full width at half maximum, the filters allow maximum contrast even in severe light pollution conditions. They minimise the size of stars and thus make the finest details accessible – indispensable under Bortle class 9/8/7/(6) skies.

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Baader Filters H-alpha/OIII/SII CMOS Ultra-Narrowband 2"
Baader
Filters H-alpha/OIII/SII CMOS Ultra-Narrowband 2"
$ 1,100.00
ready for shipping in 1-2 weeks
Baader Filters H-alpha/OIII/SII CMOS Ultra-Narrowband 65x65mm
Baader
Filters H-alpha/OIII/SII CMOS Ultra-Narrowband 65x65mm
$ 1,650.00
ready for shipping in 1-2 weeks
Baader Filters H-alpha CMOS Ultra-Narrowband 2"
Baader
Filters H-alpha CMOS Ultra-Narrowband 2"
$ 400.00
ready for shipping in 24 h
Baader Filters H-alpha/OIII/SII CMOS Ultra-Narrowband 50,4mm
Baader
Filters H-alpha/OIII/SII CMOS Ultra-Narrowband 50,4mm
$ 1,190.00
ready for shipping in 1-2 weeks
Baader Filters H-alpha CMOS Ultra-Narrowband 36mm
Baader
Filters H-alpha CMOS Ultra-Narrowband 36mm
$ 353.00
ready for shipping in 1-2 weeks
Baader Filters SII CMOS Ultra-Narrowband 36mm
Baader
Filters SII CMOS Ultra-Narrowband 36mm
$ 336.00
ready for shipping in 1-2 weeks
Baader Filters H-alpha/OIII/SII CMOS Ultra-Narrowband 36mm
Baader
Filters H-alpha/OIII/SII CMOS Ultra-Narrowband 36mm
$ 970.00
ready for shipping in 1-2 weeks
Baader Filters H-alpha/OIII/SII CMOS Ultra-Narrowband 31mm
Baader
Filters H-alpha/OIII/SII CMOS Ultra-Narrowband 31mm
$ 810.00
ready for shipping in 1-2 weeks
Baader Filters H-alpha/OIII/SII CMOS Ultra-Narrowband 1.25"
Baader
Filters H-alpha/OIII/SII CMOS Ultra-Narrowband 1.25"
$ 760.00
ready for shipping in 1-2 weeks
Baader Filters H-alpha/OIII/SII CMOS Ultra-Narrowband 50x50mm
Baader
Filters H-alpha/OIII/SII CMOS Ultra-Narrowband 50x50mm
$ 1,270.00
Product can be shipped as of 01.02.2025
Baader Filters H-alpha CMOS Ultra-Narrowband 65x65mm
Baader
Filters H-alpha CMOS Ultra-Narrowband 65x65mm
$ 630.00
ready for shipping in 1-2 weeks
Baader Filters SII CMOS Ultra-Narrowband 65x65mm
Baader
Filters SII CMOS Ultra-Narrowband 65x65mm
$ 560.00
ready for shipping in 1-2 weeks
Baader Filters OIII CMOS Ultra-Narrowband 65x65mm
Baader
Filters OIII CMOS Ultra-Narrowband 65x65mm
$ 560.00
ready for shipping in 1-2 weeks
Baader Filters H-alpha CMOS Ultra-Narrowband 50x50mm
Baader
Filters H-alpha CMOS Ultra-Narrowband 50x50mm
$ 500.00
ready for shipping in 1-2 weeks
Baader Filters Ultra-Narrowband SII CMOS 50.4mm
Baader
Filters Ultra-Narrowband SII CMOS 50.4mm
$ 410.00
Sale price:
$ 286.31
ready for shipping in 24 h
Baader Filters H-alpha CMOS Ultra-Narrowband 50.4mm
Baader
Filters H-alpha CMOS Ultra-Narrowband 50.4mm
$ 437.00
ready for shipping in 1-2 weeks
Baader Filters SII CMOS Ultra-Narrowband 50x50mm
Baader
Filters SII CMOS Ultra-Narrowband 50x50mm
$ 418.00
ready for shipping in 1-2 weeks
Baader Filters OIII CMOS Ultra-Narrowband 50x50mm
Baader
Filters OIII CMOS Ultra-Narrowband 50x50mm
$ 415.00
ready for shipping in 1-2 weeks
Baader Filters OIII CMOS Ultra-Narrowband 50.4mm
Baader
Filters OIII CMOS Ultra-Narrowband 50.4mm
$ 406.00
ready for shipping in 1-2 weeks
Baader Filters OIII CMOS Ultra-Narrowband 36mm
Baader
Filters OIII CMOS Ultra-Narrowband 36mm
$ 332.00
ready for shipping in 1-2 weeks
Baader Filters H-alpha CMOS Ultra-Narrowband 31mm
Baader
Filters H-alpha CMOS Ultra-Narrowband 31mm
$ 294.00
ready for shipping in 1-2 weeks
Baader Filters SII CMOS Ultra-Narrowband 31mm
Baader
Filters SII CMOS Ultra-Narrowband 31mm
$ 280.00
ready for shipping in 1-2 weeks
Baader Filters OIII CMOS Ultra-Narrowband 31mm
Baader
Filters OIII CMOS Ultra-Narrowband 31mm
$ 277.00
ready for shipping in 1-2 weeks
Baader Filters H-alpha CMOS Ultra-Narrowband 1.25"
Baader
Filters H-alpha CMOS Ultra-Narrowband 1.25"
$ 279.00
ready for shipping in 1-2 weeks
Baader Filters Ultra-Narrowband SII CMOS 1.25"
Baader
Filters Ultra-Narrowband SII CMOS 1.25"
$ 262.00
ready for shipping in 1-2 weeks
Baader Filters OIII CMOS Ultra-Narrowband 1.25"
Baader
Filters OIII CMOS Ultra-Narrowband 1.25"
$ 257.00
ready for shipping in 1-2 weeks
Baader Filters SII CMOS Ultra-Narrowband 2"
Baader
Filters SII CMOS Ultra-Narrowband 2"
$ 380.00
Product can be shipped as of 01.02.2025
Baader Filters OIII CMOS Ultra-Narrowband 2"
Baader
Filters OIII CMOS Ultra-Narrowband 2"
$ 376.00
Product can be shipped as of 01.02.2025