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Top Sellers

Canon EOS T-Ring adapter
Canon EOS T-Ring adapter
$19.99
M48 Variable Locking Extension Ring
M48 Variable Locking Extension Ring
$44.99
(1)
Artesky 2
Artesky 2" Filter Holder and T2 Adapter for Celestron RASA8 Astrograph
$69.99

New Releases

Canon EOS T-Ring adapter
Canon EOS T-Ring adapter
$19.99
Large Adapter for Off-Axis Guider
Large Adapter for Off-Axis Guider
$44.99
Adapter for T/T2/M42 Male to C/CS Male
Adapter for T/T2/M42 Male to C/CS Male
$19.99
T Adapter for Nexstar 4SE
T Adapter for Nexstar 4SE
$39.99

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Featured Products

1.25
1.25" Adapter to T-Ring
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$24.99
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T-Ring - Pentax K
T-Ring - Pentax K
$29.99
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2
2" adapter to T-Ring
$39.99
In Stock
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Antares SCT-T-ring 55mm
Antares SCT-T-ring 55mm
$32.00
In Stock
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Antares SCT-T-ring 30mm
Antares SCT-T-ring 30mm
(1)
$28.55
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Variable Eyepiece projection adapter
Variable Eyepiece projection adapter
(1)
$39.99
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Explore Scientific Smart Phone holder
Explore Scientific Smart Phone holder
$21.04
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ZWO ADC
ZWO ADC
$169.99
Out of Stock
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Piggyback mount - Nexstar 5, 6, 8
Piggyback mount - Nexstar 5, 6, 8
$49.99
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T-Adapter for EdgeHD 8
T-Adapter for EdgeHD 8"
$49.99
In Stock
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T-Adapter EdgeHD 9
T-Adapter EdgeHD 9"/11"/14"
$84.99
In Stock
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T-Ring - Nikon
T-Ring - Nikon
$19.99
In Stock
Add To Cart
T Adapter for Nexstar 4SE
T Adapter for Nexstar 4SE
$39.99
In Stock
Add To Cart
Adapter for T/T2/M42 Male to C/CS Male
Adapter for T/T2/M42 Male to C/CS Male
$19.99
Back Order
Add To Cart
Large Adapter for Off-Axis Guider
Large Adapter for Off-Axis Guider
$44.99
In Stock
Add To Cart
Canon EOS T-Ring adapter
Canon EOS T-Ring adapter
$19.99
In Stock
Add To Cart
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All prices listed are in Canadian dollars. We make every effort to ensure our prices are accurate. We do, however, reserve the right to advise you of any errors prior to processing your invoice. If you are not willing to accept changes on these errors we will cancel your order. Ontario Telescope and Accessories reserves the right to limit quantities. We apologize for any inconvenience this may cause.

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