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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.

Askar Dual-Band Filters

Askar dual-band filters belong to the Colour Magic line and pass two emission lines at once, Ha with OIII or SII with OIII, for imaging emission nebulae with a color camera from light-polluted sites. They come as 2" filters in three families: the C1 and C2, the 6nm Super D1 and D2, and the 3nm Ultra E1 and E2.

Narrower bandwidths give more contrast under bright skies. Each pair is also sold as a package, so you can combine both filters for a bicolor or SHO-style result.

Filters

$119.00 - $119.00
$119.00
$119.00 - $119.00
$119.00

Askar Colour Magic SII/OIII C2 Filter - 2"

ASK-ASKAR2DBC2
3 in stock

Dual-band filter passing SⅡ (672nm) and OIII (500.7nm) emission lines Designed for one-shot-color cameras to capture data often missed by Hα/OIII ...

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$119.00 - $119.00
$119.00
$119.00 - $119.00
$119.00
$119.00 - $119.00
$119.00
$119.00 - $119.00
$119.00

Askar Colour Magic Ha/OIII C1 Filter - 2"

ASK-ASKAR2DBC1
2 in stock

Dual-bandpass filter for H-alpha (656.6nm) and Oxygen-III (500.7nm) Asymmetrical bandwidths: 15nm for H-alpha, 35nm for OIII Greater than 90% peak...

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$119.00 - $119.00
$119.00
$119.00 - $119.00
$119.00
$319.00 - $319.00
$319.00
$319.00 - $319.00
$319.00

Askar 6nm Colour Magic Super SII/OIII D2 Filter - 2"

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3 in stock

Dual-band filter passing OIII (6.5nm) and SII (8.5nm) wavelengths Peak transmittance of 85% for maximum signal capture Designed for color cameras ...

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$319.00 - $319.00
$319.00
$319.00 - $319.00
$319.00
$625.00 - $625.00
$625.00
$625.00 - $625.00
$625.00

Askar 6nm Colour Magic Ha/OIII & SII/OIII (D1+D2) Filter Package

ASK-CM-D1D2
3 in stock

6nm Dual-Bandpass Filter Set Includes D1 (Hα+OIII) and D2 (SII+OIII) Filters Enables SHO-like imaging with color cameras High contrast for light-p...

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$625.00 - $625.00
$625.00
$625.00 - $625.00
$625.00
$225.00 - $225.00
$225.00
$225.00 - $225.00
$225.00

Askar Colour Magic Ha/OIII & SII/OIII (C1+C2) Filter Package

ASK-CM-C1C2
2 in stock

Complete 2-Filter Narrowband Solution for Color Cameras Captures H-alpha, Oxygen-III, and Sulfur-II Wavelengths Filter 1 (C1): Hα + OIII Duo-Band ...

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$225.00 - $225.00
$225.00
$225.00 - $225.00
$225.00
$319.00 - $319.00
$319.00
$319.00 - $319.00
$319.00

Askar 6nm Colour Magic Super Ha/OIII D1 Filter - 2"

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4 in stock

Dual-Bandpass: 8.5nm H-alpha & 6.5nm OIII Peak Transmittance: >85% at 500.7nm and 656.6nm Light Pollution Suppression: ≥OD5 blocking from 2...

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$319.00 - $319.00
$319.00
$319.00 - $319.00
$319.00
$594.29 - $594.29
$594.29
$594.29 - $594.29
$594.29

Askar 3nm Colour Magic Ultra OIII/SII E2 Filter - 2"

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1 in stock

Dual-bandpass design captures OIII (500.7nm) and SII (672nm) simultaneously Narrow 3.7nm (OIII) and 4.0nm (SII) FWHM for high-contrast imaging Pea...

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$594.29 - $594.29
$594.29
$594.29 - $594.29
$594.29
$1,177.36 - $1,177.36
$1,177.36
$1,177.36 - $1,177.36
$1,177.36

Askar 3nm Colour Magic Ha/OIII & SII/OIII (E1+E2) Filter Package

ASK-CM-E1E2
1 in stock

Enables SHO "Hubble Palette" imaging with a one-shot-color (OSC) camera Includes two 3nm dual-bandpass filters: E1 (Hα+OIII) and E2 (SII+OIII) Iso...

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$1,177.36 - $1,177.36
$1,177.36
$1,177.36 - $1,177.36
$1,177.36
$605.00 - $605.00
$605.00
$605.00 - $605.00
$605.00

Askar 3nm Colour Magic Ultra Ha/OIII E1 Filter - 2"

ASK-ASKAR2DBE1
1 in stock

Dual-bandpass for Hydrogen-alpha (656.6nm) and Oxygen-III (500.7nm) Ultra-narrow 3.7nm (Ha) and 4.0nm (OIII) FWHM bandwidths 85% peak transmittanc...

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$605.00 - $605.00
$605.00
$605.00 - $605.00
$605.00