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 OIII CMOS Narrowband 1.25"](/Produktbilder/normal/70858_1/Baader-Filters-OIII-CMOS-Narrowband-1-25-.jpg)
Baader
Filters OIII CMOS Narrowband 1.25"
$ 152.00
ready for shipping in 1-2
weeks
![Baader Filters OIII CMOS Narrowband 31mm](/Produktbilder/normal/70859_1/Baader-Filters-OIII-CMOS-Narrowband-31mm.jpg)
Baader
Filters OIII CMOS Narrowband 31mm
$ 160.00
ready for shipping in 1-2
weeks