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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.

Antlia 3nm Pro Narrowband Filters

Antlia 3nm Pro narrowband filters isolate a single emission line with a 3nm bandpass, for high-contrast nebula imaging with a monochrome camera, even under light pollution or a bright Moon. The line covers H-alpha, OIII and SII for SHO work, plus H-beta and NII filters for more specialized targets.

Highspeed versions of the H-alpha, OIII and SII filters are designed for fast optics from f/2.6 to f/3.6, where a standard filter would shift off the line.

Filters

$255.00 - $490.00
$255.00 - $490.00
$255.00 - $490.00
$255.00

Antlia 3nm Narrowband SII Pro Filter

Options available
7 variants in stock

Antlia SII Pro narrowband filter optimizes the FWHM (full width half maximum) to 3nm bandpass. As the bandwidth becomes narrower, the 3nm Pro narro...

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$255.00 - $490.00
$255.00 - $490.00
$255.00 - $490.00
$255.00
$255.00 - $490.00
$255.00 - $490.00
$255.00 - $490.00
$255.00

Antlia 3nm Narrowband OIII Pro Filter

Options available
8 variants in stock

Antlia OIII Pro narrowband filter optimizes the FWHM (full width half maximum) to 3nmbandpass. As the bandwidth becomes narrower, the 3nm Pro narro...

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$255.00 - $490.00
$255.00 - $490.00
$255.00 - $490.00
$255.00
$255.00 - $490.00
$255.00 - $490.00
$255.00 - $490.00
$255.00

Antlia 3nm Narrowband H-alpha Pro Filter

Options available
8 variants in stock

656.3nm H-alpha Central Wavelength Small 3nm FHWM High >88% Peak Transmission Minimized halos on bright stars Description Specificat...

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$255.00 - $490.00
$255.00 - $490.00
$255.00 - $490.00
$255.00
$268.00 - $515.00
$268.00 - $515.00
$268.00 - $515.00
$268.00

Antlia 3nm Narrowband H-alpha Pro Highspeed Filter - f/2.6 to f/3.6

Options available
1 variants in stock

Pre-shifted 656.3nm H-alpha Central Wavelength for High-Speed Systems Optimized 3nm FHWM for f/2.6–f/3.6 High >90% Peak Transmission Enhanced S...

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$268.00 - $515.00
$268.00 - $515.00
$268.00 - $515.00
$268.00
$268.00 - $515.00
$268.00 - $515.00
$268.00 - $515.00
$268.00

Antlia 3nm Narrowband OIII Pro Highspeed Filter - f/2.6 to f/3.6

Options available
1 variants in stock

Pre-shifted 500.7nm OIII Central Wavelength for High-Speed Systems Optimized 3nm FHWM for f/2.6–f/3.6 High >90% Peak Transmission Enhan...

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$268.00 - $515.00
$268.00 - $515.00
$268.00 - $515.00
$268.00
$263.12 - $505.89
$263.12 - $505.89
$263.12 - $505.89
$263.12

Antlia 3nm Narrowband SII Pro Highspeed Filter - f/2.6 to f/3.6

Options available
1 variants in stock

Pre-shifted 500.7nm OIII Central Wavelength for High-Speed Systems Optimized 3nm FHWM for f/2.6–f/3.6 High >90% Peak Transmission Enhan...

View full details
$263.12 - $505.89
$263.12 - $505.89
$263.12 - $505.89
$263.12