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 H-alpha CMOS Narrowband 65x65mm
$ 386.00
ready for shipping in 1-2
weeks
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Filters H-alpha CMOS Narrowband 1.25"
$ 149.00
ready for shipping in 1-2
weeks
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Filters H-alpha CMOS Narrowband 2"
$ 252.00
ready for shipping in 1-2
weeks
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Filters H-alpha CMOS Narrowband 31mm
$ 156.00
ready for shipping in 1-2
weeks
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Filters H-alpha CMOS Narrowband 36mm
$ 177.00
ready for shipping in 1-2
weeks
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Filters H-alpha CMOS Narrowband 50.4mm
$ 263.00
ready for shipping in 1-2
weeks
Baader
Filters H-alpha CMOS Narrowband 50x50mm
Sale price:
$ 300.00
$ 181.07
ready for shipping in 24
h