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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.

Baader Highspeed Narrowband Filters

Baader Highspeed narrowband filters are CMOS-optimized H-alpha, O-III and S-II filters designed for very fast optics at f/2 and f/3, such as RASA and Hyperstar systems. Their passband is matched to the steep light cone of these systems, so the emission line still reaches the sensor at full strength.

Choose between Highspeed (6.5nm) and Ultra-Highspeed (3.5nm H-alpha, 4nm O-III and S-II) versions, sold individually or as complete H-alpha/O-III/S-II sets.

Filters

$548.00 - $1,310.00
$548.00 - $1,310.00
$548.00 - $1,310.00
$548.00

Baader 6.5nm f/2 Highspeed Filter Set - CMOS-Optimized H-alpha/O-III/S-II

Options available
1 variants in stock

Set of 3 Narrowband Filters: H-alpha, O-III, and S-II 6.5nm Bandpass for high-contrast imaging Optimized for f/2 to f/3.5 High-Speed Optical Syste...

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$548.00 - $1,310.00
$548.00 - $1,310.00
$548.00 - $1,310.00
$548.00
$946.00 - $2,105.00
$946.00 - $2,105.00
$946.00 - $2,105.00
$946.00

Baader 3.5/4nm f/2 Ultra-Highspeed Filter Set - CMOS-Optimized H-alpha/O-III/S-II

Options available

3.5nm (H-alpha, S-II) and 4nm (O-III) Bandpasses Optimized for f/2 Ultra-Highspeed Optical Systems CMOS-Optimized with Reflex-Blocker™ Coatings Pr...

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$946.00 - $2,105.00
$946.00 - $2,105.00
$946.00 - $2,105.00
$946.00
Baader Planetarium Baader S-II 1.25" f/2 Ultra-Highspeed-Filter (4nm) – CMOS-optimized
$324.00 - $671.00
$324.00 - $671.00
$324.00 - $671.00
$324.00

Baader Planetarium S-II f/2 Ultra-Highspeed-Filter (4nm) – CMOS-optimized

Options available

4nm FWHM Bandpass for Sulfur-II (S-II) Engineered for f/2 Ultra-Highspeed Optical Systems Available in 1.25" & 2" Mounted, 31mm, 36mm, 50.4mm ...

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$324.00 - $671.00
$324.00 - $671.00
$324.00 - $671.00
$324.00
Baader Planetarium Baader H-alpha 1.25" f/2 Ultra-Highspeed-Filter (3.5nm) – CMOS-optimized
$363.00 - $873.00
$363.00 - $873.00
$363.00 - $873.00
$363.00

Baader Planetarium H-alpha f/2 Ultra-Highspeed-Filter (3.5nm) – CMOS-optimized

Options available

Engineered for f/2 ultra-highspeed optical systems 3.5nm bandpass for maximum H-alpha contrast CMOS-optimized with anti-reflection coatings Availa...

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$363.00 - $873.00
$363.00 - $873.00
$363.00 - $873.00
$363.00
Baader Planetarium Baader 3.5 / 4nm f/3 Ultra-Highspeed Filter-Set 1.25" – CMOS-optimized (H-alpha / O-III / S-II)
$929.00 - $1,971.00
$929.00 - $1,971.00
$929.00 - $1,971.00
$929.00

Baader Planetarium 3.5 / 4nm f/3 Ultra-Highspeed Filter-Set – CMOS-optimized (H-alpha / O-III / S-II)

Options available

3.5 / 4nm Ultra-Narrow H-alpha, O-III & S-II Bandpasses Pre-Shifted for Fast f/3 "Ultra-Highspeed" Optical Systems CMOS-Optimized with Anti-Re...

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$929.00 - $1,971.00
$929.00 - $1,971.00
$929.00 - $1,971.00
$929.00
Baader Planetarium Baader H-alpha 1.25" f/2 Highspeed-Filter (6.5nm) – CMOS-optimized
$199.00 - $487.00
$199.00 - $487.00
$199.00 - $487.00
$199.00

Baader Planetarium H-alpha f/2 Highspeed-Filter (6.5nm) – CMOS-optimized

Options available

Engineered for ultra-fast f/2 optical systems 6.5nm H-alpha bandpass for high-contrast imaging CMOS-optimized to suppress halos and internal refle...

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$199.00 - $487.00
$199.00 - $487.00
$199.00 - $487.00
$199.00
Baader Planetarium Baader S-II 1.25" f/3 Ultra-Highspeed-Filter (4nm) – CMOS-optimized
$324.00 - $660.00
$324.00 - $660.00
$324.00 - $660.00
$324.00

Baader Planetarium S-II f/3 Ultra-Highspeed-Filter (4nm) – CMOS-optimized

Options available

4nm Bandwidth (FWHM) Pre-Shifted for Fast f/3 Optical Systems Available in 1.25" & 2" Mounted, 31mm, 36mm & 50.4mm Unmounted Round, and 50...

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$324.00 - $660.00
$324.00 - $660.00
$324.00 - $660.00
$324.00
Baader Planetarium Baader H-alpha 1.25" f/3 Ultra-Highspeed-Filter (3.5nm) – CMOS-optimized
$347.00 - $770.00
$347.00 - $770.00
$347.00 - $770.00
$347.00

Baader Planetarium H-alpha f/3 Ultra-Highspeed-Filter (3.5nm) – CMOS-optimized

Options available

3.5nm H-alpha Bandpass Optimized for f/3 Ultra-High-Speed Systems Available in 1.25" & 2" mounted, 31mm, 36mm & 50.4mm round unmounted, an...

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$347.00 - $770.00
$347.00 - $770.00
$347.00 - $770.00
$347.00
Baader Planetarium Baader O-III 1.25" f/3 Ultra-Highspeed-Filter (4nm) – CMOS-optimized
$317.00 - $667.00
$317.00 - $667.00
$317.00 - $667.00
$317.00

Baader Planetarium O-III f/3 Ultra-Highspeed-Filter (4nm) – CMOS-optimized

Options available

4nm FWHM Ultra-Narrow Bandpass Optimized for f/3 and Faster Optical Systems Available in 1.25" & 2" Mounted, 31mm, 36mm & 50.4mm Round Unm...

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$317.00 - $667.00
$317.00 - $667.00
$317.00 - $667.00
$317.00
Baader Planetarium Baader O-III 1.25" f/2 Ultra-Highspeed-Filter (4nm) – CMOS-optimized
$333.00 - $669.00
$333.00 - $669.00
$333.00 - $669.00
$333.00

Baader Planetarium O-III f/2 Ultra-Highspeed-Filter (4nm) – CMOS-optimized

Options available

4nm FWHM Bandpass Optimized for f/2 Ultra-Highspeed Systems Available in 1.25" & 2" Mounted, 31mm, 36mm, 47.4mm (FCCT) & 50.4mm Round Unmo...

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$333.00 - $669.00
$333.00 - $669.00
$333.00 - $669.00
$333.00
Baader Planetarium Baader S-II 1.25" f/2 Highspeed-Filter (6.5nm) – CMOS-optimized
$195.00 - $475.00
$195.00 - $475.00
$195.00 - $475.00
$195.00

Baader Planetarium S-II f/2 Highspeed-Filter (6.5nm) – CMOS-optimized

Options available

6.5nm Sulfur-II Narrowband Filter Optimized for f/2 High-Speed Optical Systems Available in 1.25" & 2" Mounted, 31mm, 36mm, 50.4mm & 2" FC...

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$195.00 - $475.00
$195.00 - $475.00
$195.00 - $475.00
$195.00
Baader Planetarium Baader O-III 1.25" f/2 Highspeed-Filter (6.5nm) – CMOS-optimized
$199.00 - $479.00
$199.00 - $479.00
$199.00 - $479.00
$199.00

Baader Planetarium O-III f/2 Highspeed-Filter (6.5nm) – CMOS-optimized

Options available

6.5nm FWHM Bandpass for O-III Optimized for f/2 to f/3.5 High-Speed Optical Systems Available in 1.25" & 2" Mounted, 31mm, 36mm, 47.4mm (FCCT)...

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$199.00 - $479.00
$199.00 - $479.00
$199.00 - $479.00
$199.00