Product series:
The f/2 Ultra-Highspeed series of filters offer line filters with a very narrow full width at half maximum for extremely fast optical systems with an aperture ratio of f/3.4 to f/1.8, such as Celestron's RASA astrograph.
The narrow full width at half maximum allows maximum contrast even in severe light pollution conditions, minimising star size and making the finest nebula details accessible – indispensable under Bortle class 9/8/7/(6) skies.
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Filters OIII CMOS f/2 Ultra-Highspeed 36mm
$ 338.00
ready for shipping in 1-2
weeks
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Filters OIII CMOS f/2 Ultra-Highspeed 50x50mm
$ 426.00
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weeks
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Filters OIII CMOS f/2 Ultra-Highspeed 50.4mm
$ 413.00
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Filters OIII CMOS f/2 Ultra-Highspeed 2"
$ 383.00
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Filters OIII CMOS f/2 Ultra-Highspeed 65x65mm
$ 570.00
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weeks
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Filters OIII CMOS f/2 Ultra-Highspeed 1.25"
$ 269.00
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weeks
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Filters OIII CMOS f/2 Ultra-Highspeed 31mm
Sale price:
$ 287.00
$ 180.04
ready for shipping in 24
h