Filters

Filters on Sale

The right filter transforms your astrophotography and visual observing. Ontario Telescope carries a comprehensive selection of
narrowband filters (H-alpha, OIII, SII), broadband light pollution filters, LRGB imaging filter sets, UV/IR cut filters, solar filters, and
lunar/planetary color filters from top brands including Optolong, Antlia, Baader Planetarium, and Chroma.
Filters are available in standard 1.25-inch, 2-inch, and drop-in formats to fit any imaging train. Our team can help you choose between
dual-band, tri-band, and single-band filter strategies based on your camera type (OSC or mono) and light pollution conditions.

11 products

Showing 1 - 11 of 11 products

Showing 1 - 11 of 11 products
View
Save $37.01
Baader Semi APO Filter 1.25"Baader Semi APO Filter 1.25"
Baader Planetarium Baader Semi APO Filter 1.25"
$94.99 CAD $132.00 CAD
Save $60.00
Altair Astro Premium 1.25" CLS-CCD Filter with UVIR Block & AR Coating
Ontario Telescope and Accessories Altair Astro Premium 1.25" CLS-CCD Filter with UVIR Block & AR Coating
$69.99 CAD $129.99 CAD
Save $40.00
Altair Astro Premium 2" CLS-CCD Filter with UVIR Block & AR Coating
Ontario Telescope and Accessories Altair Astro Premium 2" CLS-CCD Filter with UVIR Block & AR Coating
$109.99 CAD $149.99 CAD
Save $200.00
Baader 6.5nm f/2 Highspeed Filters – CMOS-optimized (H-alpha, O-III, S-11) 36mmBaader 6.5nm f/2 Highspeed Filters – CMOS-optimized (H-alpha, O-III, S-11) 36mm
Baader Planetarium Baader 6.5nm f/2 Highspeed Filters – CMOS-optimized (H-alpha, O-III, S-11) 36mm
$749.99 CAD $949.99 CAD
LRGB Filters 1.25"LRGB Filters 1.25"
Askar LRGB Filters 1.25"
$249.99 CAD
Baader 6.5nm Narrowband Filters – CMOS-optimized (H-alpha, O-III, S-11) 36mmBaader 6.5nm Narrowband Filters – CMOS-optimized (H-alpha, O-III, S-11) 36mm
Baader Planetarium Baader 6.5nm Narrowband Filters – CMOS-optimized (H-alpha, O-III, S-11) 36mm
$684.99 CAD
LRGB Filters 2"LRGB Filters 2"
Askar LRGB Filters 2"
$424.99 CAD
Save $74.99
Baader 6.5nm Narrowband Filters – CMOS-optimized (H-alpha, O-III, S-11) 1.25"Baader 6.5nm Narrowband Filters – CMOS-optimized (H-alpha, O-III, S-11) 1.25"
Baader Planetarium Baader 6.5nm Narrowband Filters – CMOS-optimized (H-alpha, O-III, S-11) 1.25"
$500.00 CAD $574.99 CAD
Baader L-RGB CCD-Filterset 1.25"Baader L-RGB CCD-Filterset 1.25"
Baader Planetarium Baader L-RGB CCD-Filterset 1.25"
$564.99 CAD
Baader UHC-S 2"Baader UHC-S 2"
Baader Planetarium Baader UHC-S 2"
$199.99 CAD
Save $49.00
H-Beta Filter 2"H-Beta Filter 2"
Explore Scientific Explore Scientific 2-inch H-Beta Nebula Filter
$200.95 CAD $249.95 CAD

Recently viewed