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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.

Filters

Filters

$44.00 - $65.00
$44.00 - $65.00
$44.00 - $65.00
$44.00

Optolong UV/IR Cut Filter

Options available
11 variants in stock

Optolong UV/IR Cut filter is designed for ultraviolet and infrared wavelength blocking to improve sharpness of the image as most of the optics are ...

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$44.00 - $65.00
$44.00 - $65.00
$44.00 - $65.00
$44.00
$39.00 - $48.00
$39.00 - $48.00
$39.00 - $48.00
$39.00

Optolong Variable Polarizing Filter

Options available
3 variants in stock

For visual observation

$39.00 - $48.00
$39.00 - $48.00
$39.00 - $48.00
$39.00
$336.00 - $336.00
$336.00
$336.00 - $336.00
$336.00

Pegasus Astro LRGB Filter Set - 2"

PEG-FLTR-2M-LRGB

$336.00 - $336.00
$336.00
$336.00 - $336.00
$336.00
Save 29% Save %
$59.00
$59.00 - $59.00
$59.00
$42.00
$42.00 - $42.00
$42.00

Player One UV/IR-Cut Anti-Halo Filter - 2"

POA-AH-UV-IR-CUT-2
2 in stock

UV/IR-cut filter with anti-halo coating Blocks ultraviolet and infrared wavelengths Reduces halos around bright stars Improves contrast and color ...

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$59.00
$59.00 - $59.00
$59.00
$42.00
$42.00 - $42.00
$42.00
Save 29% Save %
Save 45% Save %
$22.00
$22.00 - $22.00
$22.00
$12.00
$12.00 - $12.00
$12.00

Player One UV/IR-Cut S-Series Filter - 1.25"

POA-UV-IR-CUT-125
3 in stock

UV/IR-cut filter for astrophotography Blocks ultraviolet and infrared wavelengths Improves color accuracy and image sharpness 1.25″ filter size Co...

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$22.00
$22.00 - $22.00
$22.00
$12.00
$12.00 - $12.00
$12.00
Save 45% Save %
$50.00 - $50.00
$50.00
$50.00 - $50.00
$50.00

QHYCCD Expansion Kit for QHY5III462C

QHY-120001

This kit contains a methane filter, an AllSky lens and a lens adapter. It's made for the QHY5III462C camera only.

$50.00 - $50.00
$50.00
$50.00 - $50.00
$50.00
$478.00 - $478.00
$478.00
$478.00 - $478.00
$478.00

William Optics STC Astro Duo-Narrowband Filter

WO-YF-STC-ADN

Dual-bandpass filter for astrophotography Optimized for H-alpha and OIII emission lines Description The William Optics STC Ast...

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$478.00 - $478.00
$478.00
$478.00 - $478.00
$478.00
$238.00 - $238.00
$238.00
$238.00 - $238.00
$238.00

William Optics STC Ultra Layer Astro Multispectra Filter - 48mm

WO-YF-STC-M48

Multi-bandpass filter for astrophotography 48mm thread-on design for easy attachment Description The William Optics STC Ultra ...

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$238.00 - $238.00
$238.00
$238.00 - $238.00
$238.00
Save up to 10% Save %
$15.00 - $39.00
$15.00 - $39.00
$15.00
$14.00 - $35.00
$14.00 - $35.00
$14.00

ZWO AR Protective Window

Options available
5 variants in stock

Protects camera sensor from dust and humidity 21mm diameter for specific ZWO camera models High-transmission Anti-Reflection (AR) coatings 1/4λ su...

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$15.00 - $39.00
$15.00 - $39.00
$15.00
$14.00 - $35.00
$14.00 - $35.00
$14.00
Save up to 10% Save %
Save 10% Save %
$99.00
$99.00 - $99.00
$99.00
$89.00
$89.00 - $89.00
$89.00

ZWO CH4 Methane Filter - 20nm 1.25"

ZWO-CH4
3 in stock

Reveals high-altitude detail on Jupiter and Saturn 20nm bandpass centered on the methane absorption line Standard 1.25" (31.75mm) threaded cell Re...

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$99.00
$99.00 - $99.00
$99.00
$89.00
$89.00 - $89.00
$89.00
Save 10% Save %
Save up to 10% Save %
$79.00 - $149.00
$79.00 - $149.00
$79.00
$71.00 - $134.00
$71.00 - $134.00
$71.00

ZWO Duo-Band Filter

Options available
7 variants in stock

Passes H-Alpha (15nm) and OIII (35nm) Wavelengths Designed for One-Shot Color (OSC) Cameras 1.25" Threaded Cell Over 80% Ha & 90% OIII Transmi...

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$79.00 - $149.00
$79.00 - $149.00
$79.00
$71.00 - $134.00
$71.00 - $134.00
$71.00
Save up to 10% Save %
Save 9% Save %
$22.00
$22.00 - $22.00
$22.00
$20.00
$20.00 - $20.00
$20.00

ZWO IR 850nm Pass Filter – 1.25"

ZWO-850IR1-25
3 in stock

Passes Infrared Light > 850nm Dramatically Steadies Planetary Views in Poor Seeing Enables Daylight Planetary and Lunar Imaging Standard 1.25" ...

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$22.00
$22.00 - $22.00
$22.00
$20.00
$20.00 - $20.00
$20.00
Save 9% Save %
Save up to 13% Save %
$16.00 - $18.00
$16.00 - $18.00
$16.00
$14.00 - $16.00
$14.00 - $16.00
$14.00

ZWO IR-Cut Protective Window

Options available
1 variants in stock

21 mm diameter protective window for select ZWO cameras Integrated UV/IR-Cut filter maintains natural color balance 1/4 λ surface flatness preserv...

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$16.00 - $18.00
$16.00 - $18.00
$16.00
$14.00 - $16.00
$14.00 - $16.00
$14.00
Save up to 13% Save %
Save up to 10% Save %
$148.00 - $299.00
$148.00 - $299.00
$148.00
$133.00 - $269.00
$133.00 - $269.00
$133.00

ZWO LRGB Optimized Filters

Options available
3 variants in stock

1.25" (31.75mm) Threaded Filter Set Greater than 92% Transmission at Passband Balanced 1:1:1 RGB Exposure Weighting 1/4 Wavefront Polished Optical...

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$148.00 - $299.00
$148.00 - $299.00
$148.00
$133.00 - $269.00
$133.00 - $269.00
$133.00
Save up to 10% Save %
Save up to 10% Save %
$369.00 - $699.00
$369.00 - $699.00
$369.00
$332.00 - $629.00
$332.00 - $629.00
$332.00

ZWO Narrowband Filter Set - 7nm H-alpha, OIII & SII

Options available
1 variants in stock

Includes 1.25" H-alpha, OIII, and SII filters 7nm bandpass for high-contrast imaging Ideal for creating "Hubble Palette" images Fine-optically pol...

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$369.00 - $699.00
$369.00 - $699.00
$369.00
$332.00 - $629.00
$332.00 - $629.00
$332.00
Save up to 10% Save %
Save up to 10% Save %
$129.00 - $249.00
$129.00 - $249.00
$129.00
$116.00 - $224.00
$116.00 - $224.00
$116.00

ZWO Narrowband H-alpha Filter - 7nm

Options available

Isolates Hydrogen-Alpha light at a 7nm bandpass Standard 1.25" threaded metal cell Blocks light pollution and moonlight for extreme contrast Multi...

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$129.00 - $249.00
$129.00 - $249.00
$129.00
$116.00 - $224.00
$116.00 - $224.00
$116.00
Save up to 10% Save %
Save up to 10% Save %
$129.00 - $249.00
$129.00 - $249.00
$129.00
$116.00 - $224.00
$116.00 - $224.00
$116.00

ZWO Narrowband OIII Filter - 7nm

Options available
2 variants in stock

7nm Bandpass at OIII Emission Line Isolates Planetary Nebulae and Supernova Remnants Standard 1.25" Threaded Filter Cell 1/4 Wave Optical Substrat...

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$129.00 - $249.00
$129.00 - $249.00
$129.00
$116.00 - $224.00
$116.00 - $224.00
$116.00
Save up to 10% Save %
Save up to 10% Save %
$129.00 - $249.00
$129.00 - $249.00
$129.00
$116.00 - $224.00
$116.00 - $224.00
$116.00

ZWO Narrowband SII Filter - 7nm

Options available
2 variants in stock

Isolates the 672nm Sulfur-II emission line 7nm bandpass for high-contrast imaging Standard 1.25" threaded metal cell 1/4 wave polished substrate w...

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$129.00 - $249.00
$129.00 - $249.00
$129.00
$116.00 - $224.00
$116.00 - $224.00
$116.00
Save up to 10% Save %
Save up to 10% Save %
$22.00 - $49.00
$22.00 - $49.00
$22.00
$20.00 - $44.00
$20.00 - $44.00
$20.00

ZWO UV/IR CUT Filter

Options available
41 variants in stock

Threads into standard 1.25" filter holders and nosepieces Blocks unwanted ultraviolet (UV) and infrared (IR) wavelengths Functions as a primary Lu...

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$22.00 - $49.00
$22.00 - $49.00
$22.00
$20.00 - $44.00
$20.00 - $44.00
$20.00
Save up to 10% Save %