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MEGA BLACK FRIDAY DEALS //POST CANADA WON'T BE USED UNTIL STRIKE IS SOLVED / Free Shipping for orders over $500* Some exceptions may apply.
MEGA BLACK FRIDAY DEALS //POST CANADA WON'T BE USED UNTIL STRIKE IS SOLVED / Free Shipping for orders over $500* Some exceptions may

Filters

An astronomical filter is a telescope accessory consisting of an optical filter used by amateur astronomers to simply improve details and contrast.

Filters

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Save $37.00 Save $0.00
$179.00
$179.00 - $179.00
$179.00
$142.00
$142.00 - $142.00
$142.00

Player One CH4 8nm 1.25″ Filter E-series (CH4-125E)

Player One CH4 8nm 1.25″ Filter E-series Player One E-series is an upgrade series of S-series, using high quality optical glass substrate and multi...

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$179.00
$179.00 - $179.00
$179.00
$142.00
$142.00 - $142.00
$142.00
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$99.00 - $243.00
$99.00 - $243.00
$99.00 - $243.00
$99.00

Baader ASTF: AstroSolar Telescope Filter OD 5.0 (80mm - 280mm)

ASTF: AstroSolar Telescope Filter OD 5.0 (80mm - 280mm) ASTF – Baader Solar Filter for all high-end Telescopes (Refractors, Reflectors, CATs) This...

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$99.00 - $243.00
$99.00 - $243.00
$99.00 - $243.00
$99.00
Save up to $153.65 Save $0.00
$134.00 - $3,073.00
$134.00 - $3,073.00
$134.00
$127.30 - $2,919.35
$127.30 - $2,919.35
$127.30

Antlia NEW Solar Discover Dualband Energy Rejection Filter (ERF)

Antlia NEW Solar Discover Dualband Energy Rejection Filter (ERF) The Antlia Dualband Solar Energy Rejection Filter is designed by combining Hydroge...

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$134.00 - $3,073.00
$134.00 - $3,073.00
$134.00
$127.30 - $2,919.35
$127.30 - $2,919.35
$127.30
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Save $28.00 Save $0.00
$124.00
$124.00 - $124.00
$124.00
$96.00
$96.00 - $96.00
$96.00

Player One ERF 2″ Filter S-series for Quark Chromosphere (ERF2)

Player One ERF 2″ Filter S-series for Quark Chromosphere Player One S series filter using high quality optical glass substrate and multi-layer comp...

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$124.00
$124.00 - $124.00
$124.00
$96.00
$96.00 - $96.00
$96.00
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Baader Solar Continuum Filter 7.5nm (540nm) - Astronomy Plus
$160.00 - $269.00
$160.00 - $269.00
$160.00 - $269.00
$160.00

Baader Solar Continuum Filter 7.5nm (540nm)

Baader Solar Continuum Filter 7.5nm (540nm) For Visual and Photographic Observations of the Sun Baader 7.5 nm Solar Continuum Filter, CWL 540nm A ...

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$160.00 - $269.00
$160.00 - $269.00
$160.00 - $269.00
$160.00
Shelyak Alpy 200 Spectroscope (PF0083) - Astronomy Plus
Shelyak Alpy 200 Spectroscope (PF0083) - Astronomy Plus
$1,280.00 - $1,280.00
$1,280.00
$1,280.00 - $1,280.00
$1,280.00

Shelyak Alpy 200 Spectroscope (PF0083)

Shelyak Alpy 200 Spectroscope The little brother of the ALPY 600 for spectra of very faint objects with a resolution of around R=130 ! The Al...

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$1,280.00 - $1,280.00
$1,280.00
$1,280.00 - $1,280.00
$1,280.00
Seymour Hyperion Binocular Solar Filters (Pair) - Astronomy Plus
Seymour Hyperion Binocular Solar Filters (Pair) - Astronomy Plus
$142.00 - $192.00
$142.00 - $192.00
$142.00 - $192.00
$142.00

Seymour Hyperion Binocular Solar Filters (Pair)

Seymour Hyperion Binocular Solar Filters (Pair) This pair of premium solar filters are safe for solar viewing when mounted on binoculars. They are ...

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$142.00 - $192.00
$142.00 - $192.00
$142.00 - $192.00
$142.00
Shelyak Alpy 600 & UVEX slit - Astronomy Plus
Shelyak Alpy 600 & UVEX slit - Astronomy Plus
$168.00 - $289.00
$168.00 - $289.00
$168.00 - $289.00
$168.00

Shelyak Alpy 600 & UVEX slit

Shelyak Alpy 600 & UVEX slit 10µm, 35µm, or 50µm slit, compatible with ALPY 600 and UVEX spectroscopes Technical Specifications  10µm slit 35µ...

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$168.00 - $289.00
$168.00 - $289.00
$168.00 - $289.00
$168.00
Player One Anti-Halo PRO Dual-Band 2″ Ha+OIII filter - Astronomy Plus
Save $75.00 Save $0.00
$695.00
$695.00 - $695.00
$695.00
$620.00
$620.00 - $620.00
$620.00

Player One Anti-Halo PRO Dual-Band 2″ Ha+OIII filter

Anti-Halo PRO Dual-Band 2″ Ha+OIII filter Anti-Halo PRO Dual-Band 2″ Ha+OIII filter Frame thickness: body 5mm+ thread 2.5mm, a total of 7.5mm F...

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$695.00
$695.00 - $695.00
$695.00
$620.00
$620.00 - $620.00
$620.00
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Optolong L-eXtreme F2 Fast Optics Dual Narrowband 2" (L-EXTREME-F2) - Astronomy Plus
Optolong L-eXtreme F2 Fast Optics Dual Narrowband 2" (L-EXTREME-F2) - Astronomy Plus
Save $62.55 Save $0.00
$417.00
$417.00 - $417.00
$417.00
$354.45
$354.45 - $354.45
$354.45

Optolong L-eXtreme F2 Fast Optics Dual Narrowband 2" (L-EXTREME-F2)

Optolong L-eXtreme F2 Fast Optics Dual Narrowband 2" Optolong L-eXtreme F2 is a dual-band (500.7 nm and 656.28 nm, FWHM=7 nm) narrowband pass filt...

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$417.00
$417.00 - $417.00
$417.00
$354.45
$354.45 - $354.45
$354.45
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Antlia OIII 3nm Narrowband PRO 2" Filter-OPEN BOX - Astronomy Plus
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$460.00
$460.00 - $460.00
$460.00
$437.00
$437.00 - $437.00
$437.00

Antlia OIII 3nm Narrowband PRO 2" Filter-OPEN BOX

Antlia OIII 3nm Narrowband Pro Filters OPEN BOX, LIKE NEW Antlia SHO Pro narrowband filter optimizes the FWHM (full width half maximum) to 3nm band...

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$460.00
$460.00 - $460.00
$460.00
$437.00
$437.00 - $437.00
$437.00
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Astronomik OWB-CCD Type 3 filter - Astronomy Plus
Astronomik OWB-CCD Type 3 filter - Astronomy Plus
$163.00 - $276.00
$163.00 - $276.00
$163.00 - $276.00
$163.00

Astronomik OWB-CCD Type 3 filter

Astronomik OWB-CCD Type 3 filter The OWB filter would usually not be designated as an "astronomical" filter. The intention is to enable converted D...

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$163.00 - $276.00
$163.00 - $276.00
$163.00 - $276.00
$163.00
Astronomik ProPlanet 742 IR-pass filter - Astronomy Plus
Astronomik ProPlanet 742 IR-pass filter - Astronomy Plus
$69.00 - $314.00
$69.00 - $314.00
$69.00 - $314.00
$69.00

Astronomik ProPlanet 742 IR-pass filter

Astronomik ProPlanet 742 IR-pass filter Ideal filters for the reception of the moon and planets, notably Mars, with telescopes from 6" (150mm) aper...

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$69.00 - $314.00
$69.00 - $314.00
$69.00 - $314.00
$69.00
Astronomik SII 6nm CCD Filters - Astronomy Plus
Astronomik SII 6nm CCD Filters - Astronomy Plus
$251.00 - $667.00
$251.00 - $667.00
$251.00 - $667.00
$251.00

Astronomik SII 6nm CCD Filters

Astronomik SII 6nm CCD Filters This SII-CCD Filter is suitable for imaging of SII-regions from observation sites with light pollution and from dark...

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$251.00 - $667.00
$251.00 - $667.00
$251.00 - $667.00
$251.00
IDAS LPS-C1 M48 Filter - Astronomy Plus
IDAS LPS-C1 M48 Filter - Astronomy Plus
Save $55.00 Save $0.00
$255.00
$255.00 - $255.00
$255.00
$200.00
$200.00 - $200.00
$200.00

Sightron Light Pollution LPS-C1 Filter 2" (M48)

Sightron LPS-C1 M48 Filter (2") (LPS) Light Pollution Suppression Filter Effectively suppressing white LED sky glow Maintains the good color bal...

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$255.00
$255.00 - $255.00
$255.00
$200.00
$200.00 - $200.00
$200.00
Save $55.00 Save $0.00
Astronomik OIII 6nm CCD Filter - Astronomy Plus
Astronomik OIII 6nm CCD Filter - Astronomy Plus
Save up to $77.00 Save $0.00
$377.00
$251.00 - $667.00
$377.00
$251.00 - $667.00
$251.00 - $667.00
$251.00

Astronomik OIII 6nm CCD Filter

Astronomik Oiii 6nm CCD Filter The OIII-CCD Filter is suitable for imaging of OIII nebulas from observation sites with light pollution and from dar...

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$377.00
$251.00 - $667.00
$377.00
$251.00 - $667.00
$251.00 - $667.00
$251.00
Save up to $77.00 Save $0.00
Shelyak Power supply 12V/3A (EL0073) - Astronomy Plus
$38.00 - $38.00
$38.00
$38.00 - $38.00
$38.00

Shelyak Power supply 12V/3A (EL0073)

Shelyak Power supply 12V/3A  12V (3A) power supply for video camera and our electronic modules (Lhires III, LISA calibration module, Alpy calibrati...

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$38.00 - $38.00
$38.00
$38.00 - $38.00
$38.00
Shelyak UVEZ Motors (PF0074) - Astronomy Plus
Shelyak UVEZ Motors (PF0074) - Astronomy Plus
$2,327.00 - $2,327.00
$2,327.00
$2,327.00 - $2,327.00
$2,327.00

Shelyak UVEZ Motors (PF0074)

Shelyak UVEZ Motors     The UVEX is now motorized, and can therefore be used remotely. Motorization:Select the central wavelength of your spectra, ...

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$2,327.00 - $2,327.00
$2,327.00
$2,327.00 - $2,327.00
$2,327.00
Shelyak Star'ex Low Resolution Optical Kit - Astronomy Plus
Shelyak Star'ex Low Resolution Optical Kit - Astronomy Plus
$677.00 - $873.00
$677.00 - $873.00
$677.00 - $873.00
$677.00

Shelyak Star'ex Low Resolution Optical Kit

Shelyak Star'ex Low Resolution Optical Kit Star’Ex Low Resolution (LR) optical kit: all the optical elements to make your own Star’Ex LR instrument...

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$677.00 - $873.00
$677.00 - $873.00
$677.00 - $873.00
$677.00
Shelyak Star'ex high resolution optical kit (ES0030) - Astronomy Plus
$308.00 - $855.00
$308.00 - $855.00
$308.00 - $855.00
$308.00

Shelyak Star'ex high resolution optical kit

Shelyak Star'ex high resolution optical kit  With Star’Ex (Star’Explorer), create your first High Resolution (HR) spectrograph yourself to observe ...

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$308.00 - $855.00
$308.00 - $855.00
$308.00 - $855.00
$308.00
Shelyak Handheld spectroscope (PF0023) - Astronomy Plus
Shelyak Handheld spectroscope (PF0023) - Astronomy Plus
$177.00 - $177.00
$177.00
$177.00 - $177.00
$177.00

Shelyak Handheld Spectroscope (PF0023)

Shelyak Handheld Spectroscope  This visual handheld spectroscope is a 115mm long tube with a very precise entrance slit which provides a very good ...

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$177.00 - $177.00
$177.00
$177.00 - $177.00
$177.00
Astronomik OIII Visual Filter - Astronomy Plus
Astronomik OIII Visual Filter - Astronomy Plus
$125.00 - $289.00
$125.00 - $289.00
$125.00 - $289.00
$125.00

Astronomik OIII Visual Filter

Astronomik OIII Visual Filter From the start, the Astronomik OIII Visual Filter has been very specifically designed for the visual observation of g...

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$125.00 - $289.00
$125.00 - $289.00
$125.00 - $289.00
$125.00
Shelyak LHIRES III (ES0002) - Astronomy Plus
$7,013.00 - $7,013.00
$7,013.00
$7,013.00 - $7,013.00
$7,013.00

Shelyak LHIRES III (ES0002)

Shelyak LHIRES III The Lhires III is THE standard High Resolution reference spectroscopy.Gain access to the smallest details in the spectral lines ...

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$7,013.00 - $7,013.00
$7,013.00
$7,013.00 - $7,013.00
$7,013.00
Antlia LRGBR+ Dark series filters - Astronomy Plus
Antlia LRGBR+ Dark series filters - Astronomy Plus
Save up to $45.90 Save $0.00
$81.00 - $918.00
$81.00 - $918.00
$81.00
$76.95 - $872.10
$76.95 - $872.10
$76.95

Antlia LRGBR+ Dark series filters

Antlia LRGBR+ Dark series filters The Antlia LRGBR+ Dark series filters are designed with a full spectrum curve from 390nm to 1000nm, making it...

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$81.00 - $918.00
$81.00 - $918.00
$81.00
$76.95 - $872.10
$76.95 - $872.10
$76.95
Save up to $45.90 Save $0.00
SVBONY SV115 1.25 inch OIII Filter Narrowband 18nm, Cuts Light Pollution (F9186A) - Astronomy Plus
SVBONY SV115 1.25 inch OIII Filter Narrowband 18nm, Cuts Light Pollution (F9186A) - Astronomy Plus
Save $11.10 Save $0.00
$74.00
$74.00 - $74.00
$74.00
$62.90
$62.90 - $62.90
$62.90

SVBONY SV115 1.25 inch OIII Filter Narrowband 18nm, Cuts Light Pollution (F9186A)

SVBONY SV115 1.25 inch OIII Filter Narrowband 18nm, Cuts Light Pollution  The 1.25" O-III filter useful for large aperture telescopes through wh...

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$74.00
$74.00 - $74.00
$74.00
$62.90
$62.90 - $62.90
$62.90
Save $11.10 Save $0.00
Baader 6.5nm Narrowband Filters – CMOS-optimized (H-alpha, O-III, S-11) - Astronomy Plus
$216.00 - $1,582.00
$216.00 - $1,582.00
$216.00 - $1,582.00
$216.00

Baader 6.5nm Narrowband Filters – CMOS-optimized (H-alpha, O-III, SII)

Baader 6.5nm Narrowband Filters – CMOS-optimized (H-alpha, OIII, SII) Baader H-alpha / O-III / S-II Narrowband Filter Set - Precision Grade 6.5 nm...

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$216.00 - $1,582.00
$216.00 - $1,582.00
$216.00 - $1,582.00
$216.00
Lunt Double Stack Filter for Lunt 80 mm & 100 mm Universal Telescopes (SFPT) - Astronomy Plus
$2,663.00 - $2,663.00
$2,663.00
$2,663.00 - $2,663.00
$2,663.00

Lunt Double Stack Filter for Lunt 80 mm & 100 mm Universal Telescopes (SFPT)

Lunt Double Stack Filter for Lunt 80 mm & 100 mm Universal Telescopes Double stacking provides a truly enhanced, high definition view of the Su...

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$2,663.00 - $2,663.00
$2,663.00
$2,663.00 - $2,663.00
$2,663.00
Lunt High Resolution H-alpha Filter for DS Modules - Astronomy Plus
Lunt High Resolution H-alpha Filter for DS Modules - Astronomy Plus
$274.00 - $296.00
$274.00 - $296.00
$274.00 - $296.00
$274.00

Lunt High Resolution H-alpha Filter for DS Modules

Lunt High Resolution H-alpha Filter for DS Modules Available Options: HRG for DSII Unit, LS80THa HRG for DSII Unit, LS100THa HRG for SFPT, LS80MT/...

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$274.00 - $296.00
$274.00 - $296.00
$274.00 - $296.00
$274.00
Shelyak Alpy 600 (PF0035) - Astronomy Plus
$1,280.00 - $1,280.00
$1,280.00
$1,280.00 - $1,280.00
$1,280.00

Shelyak Alpy 600 Spectroscope (PF0035)

Shelyak Alpy 600 The Alpy 600 and Demetra software (developed by Shelyak Instrument for the ALPY 600 spectrograph) will allow you to produce spectr...

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$1,280.00 - $1,280.00
$1,280.00
$1,280.00 - $1,280.00
$1,280.00
Antlia Imaging Herschel Wedge with 35mm Prism and 1.25'' Cak 3nm Solar Filter - Astronomy Plus
Antlia Imaging Herschel Wedge with 35mm Prism and 1.25'' Cak 3nm Solar Filter - Astronomy Plus
Save $22.55 Save $0.00
$451.00
$451.00 - $451.00
$451.00
$428.45
$428.45 - $428.45
$428.45

Antlia Imaging Herschel Wedge with 35mm Prism and 1.25'' Cak 3nm Solar Filter

Antlia Imaging Herschel Wedge with 35mm Prism and 1.25'' Cak 3nm Solar Filter The Antlia Solar Wedge (Herschel Wedge design) replaces the standard ...

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$451.00
$451.00 - $451.00
$451.00
$428.45
$428.45 - $428.45
$428.45
Save $22.55 Save $0.00
Celestron 2" UHC/LPR Filter (94124) - Astronomy Plus
Celestron 2" UHC/LPR Filter (94124) - Astronomy Plus
$162.00 - $162.00
$162.00
$162.00 - $162.00
$162.00

Celestron 2" UHC/LPR Filter (94124)

Celestron 2" UHC/LPR Filter Our 2" Light Pollution Reduction (LPR) Filters are designed to selectively reduce the transmission of certain wavelengt...

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$162.00 - $162.00
$162.00
$162.00 - $162.00
$162.00
Celestron 1.25" Neutral Density Moon Filter (94105) - Astronomy Plus
Celestron 1.25" Neutral Density Moon Filter (94105) - Astronomy Plus
$25.00 - $25.00
$25.00
$25.00 - $25.00
$25.00

Celestron 1.25" Neutral Density Moon Filter (94105)

Celestron 1.25" Neutral Density Moon Filter The Celestron Neutral Density Moon Filter attaches to a 1.25” eyepiece to lower the amount of light ent...

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$25.00 - $25.00
$25.00
$25.00 - $25.00
$25.00
Celestron 1.25" Moon Filter (94119-A) - Astronomy Plus
$16.00 - $16.00
$16.00
$16.00 - $16.00
$16.00

Celestron 1.25" Moon Filter (94119-A)

Celestron 1.25" Moon Filter The Moon has the distinction of being the most often viewed celestial object through backyard telescopes. It is undoubt...

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$16.00 - $16.00
$16.00
$16.00 - $16.00
$16.00
Astrozap Binocular Glass Solar Filter - Astronomy Plus
Astrozap Binocular Glass Solar Filter - Astronomy Plus
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$224.00 - $279.00
$224.00 - $279.00
$224.00 - $279.00
$224.00

Astrozap Binocular Glass Solar Filter

Astrozap Binocular Glass Solar Filter The Astrozap Binocular Glass Solar Filter come in a pair for binoculars. The clear aperture is made with high...

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$224.00 - $279.00
$224.00 - $279.00
$224.00 - $279.00
$224.00
Sold out
Askar Color Magic 3nm Deep-Sky Narrowband filter - Astronomy Plus
Save $35.00 Save $0.00
$735.00
$735.00 - $735.00
$735.00
$700.00
$700.00 - $700.00
$700.00

Askar Color Magic D 3nm Deep-Sky Narrowband filter

Askar Color Magic 3nm Deep-Sky Narrowband filter For all astrophotography enthusiasts, filters are one of the indispensable accessories to achieve ...

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$735.00
$735.00 - $735.00
$735.00
$700.00
$700.00 - $700.00
$700.00
Save $35.00 Save $0.00
Antlia IR Pass 850nm Planetary 1.25" Filter - Astronomy Plus
Save $2.55 Save $0.00
$51.00
$51.00 - $51.00
$51.00
$48.45
$48.45 - $48.45
$48.45

Antlia IR Pass 850nm Planetary 1.25" Filter

Antlia IR Pass 850nm planetary 1.25" filter The Antlia IR Pass 850nm filter is an absorptive filter that allows infrared light with wavelengths of ...

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$51.00
$51.00 - $51.00
$51.00
$48.45
$48.45 - $48.45
$48.45
Save $2.55 Save $0.00
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