Product series:
The Narrowband series offers line filters with a full width at half maximum of 6.5 nanometres, recommended for optical systems with an aperture ratio of f/10 to f/3.5.
Most telescopes used by amateurs fall within this wide range of recommended aperture ratios. The full width at half maximum is also suitable for optics with a smaller aperture and represents very good value for money.

Baader
Filters SII CMOS Narrowband 2"
$ 270.00
ready for shipping in 1-2
weeks

Baader
Filters OIII CMOS Narrowband 1.25"
$ 161.00
ready for shipping in 1-2
weeks

Baader
Filters OIII CMOS Narrowband 2"
$ 272.00
ready for shipping in 1-2
weeks

Baader
Filters OIII CMOS Narrowband 50.4mm
$ 325.00
ready for shipping in 1-2
weeks

Baader
Filters H-Beta CMOS Narrowband 36mm
$ 254.00
ready for shipping in 1-2
weeks

Baader
Filters H-Beta CMOS Narrowband 2"
$ 349.00
ready for shipping in 1-2
weeks

Baader
Filters H-alpha CMOS Narrowband 2"
$ 278.00
ready for shipping in 1-2
weeks

Baader
Filters H-Beta CMOS Narrowband 1.25"
$ 219.00
ready for shipping in 24
h

Baader
Filters H-alpha CMOS Narrowband 1.25"
$ 165.00
ready for shipping in 24
h

Baader
Filters SII CMOS Narrowband 31mm
$ 168.00
ready for shipping in 1-2
weeks

Baader
Filters OIII CMOS Narrowband 36mm
$ 194.00
ready for shipping in 1-2
weeks

Baader
Filters Narrowband SII CMOS 1.25"
$ 159.00
ready for shipping in 1-2
weeks

Baader
Filters SII CMOS Narrowband 50x50mm
$ 336.00
ready for shipping in 24
h

Baader
Filters SII CMOS Narrowband 50.4mm
$ 323.00
ready for shipping in 1-2
weeks

Baader
Filters H-alpha CMOS Narrowband 50.4mm
$ 290.00
ready for shipping in 1-2
weeks

Baader
Filters H-Beta CMOS Narrowband 31mm
$ 231.00
ready for shipping in 1-2
weeks

Baader
Filters H-alpha CMOS Narrowband 36mm
$ 195.00
ready for shipping in 1-2
weeks

Baader
Filters SII CMOS Narrowband 36mm
$ 193.00
ready for shipping in 1-2
weeks

Baader
Filters H-alpha CMOS Narrowband 31mm
$ 172.00
ready for shipping in 1-2
weeks

Baader
Filters OIII CMOS Narrowband 31mm
$ 169.00
ready for shipping in 1-2
weeks

Baader
Filters OIII CMOS Narrowband 50x50mm
$ 337.00
ready for shipping in 24
h

Baader
Filters H-alpha CMOS Narrowband 50x50mm
$ 331.00
ready for shipping in 24
h