Product series:
The photography of galactic nebulae with extremely fast optics can only really be effective with the f/2 Highspeed filter.
The full width at half maximum of this filter is optimised for fast apertures of f/1.8 to f/3.5, where despite the high line broadening at this aperture ratio, a high contrast is still possible.
The filters are also ideal for Celestron RASA Astrographs.
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Filters H-alpha CMOS f/2 Highspeed 50x50mm
$ 322.00
ready for shipping in 1-2
weeks
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Filters H-alpha CMOS f/2 Highspeed 31mm
$ 169.00
ready for shipping in 1-2
weeks
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Filters H-alpha CMOS f/2 Highspeed 36mm
$ 191.00
ready for shipping in 1-2
weeks
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Filters H-alpha CMOS f/2 Highspeed 65x65mm
$ 398.00
ready for shipping in 24
h
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Filters H-alpha CMOS f/2 Highspeed 1.25"
$ 163.00
ready for shipping in 1-2
weeks
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Filters H-alpha CMOS f/2 Highspeed 50.4mm
$ 277.00
ready for shipping in 1-2
weeks
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Filters H-alpha CMOS f/2 Highspeed 2"
$ 268.00
ready for shipping in 1-2
weeks