We believe in sharing real advice and knowledge. Whether you are a beginner, amateur or pro astronomer, our goal is to help you get the right equipment to meet your budget and your goals. We strive to help foster your passion for astronomy because we want you to enjoy the hobby as much as we do!

Ontario Telescope and Accessories is an online and in-person destination for hobbyists and astronomers that are looking for new equipment. Proud authorized dealer for iOptron, Celestron, Skywatcher, Optolong, Antlia, IDAS, QHYCCD, Diffraction Limited, Explore Scientific, Pegasus Astro, ZWQ Antares, and other high-quality manufacturers. Offering shipping across Canada, the United States, and beyond with personalized service to ensure customer satisfaction. Shop for your equipment 24 hours a day from the comfort of your own home or come visit us in-person at our Bolton, Ontario location.

Ontario Telescope and Accessories, where OTA means more.

Our hours are:

Monday

12:00pm to 5:00pm

Tuesday - Friday

10:00am to 5:00pm

Saturday

10:30am to 3:00pm

Sunday

Closed

Email Us at:

sales@ontariotelescope.com
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Recent Blog Posts

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What Is Back Focus in Astrophotography? Telescope Reducers, Flatteners, and Spacing Explained

What Is Back Focus in Astrophotography? Telescope Reducers, Flatteners, and Spacing Explained

Stephen Mallia
What Is Back Focus in Astrophotography? Telescope Reducers, Flatteners, and Spacing Explained Back focus is one of those astrophotography terms that c

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Controlling Your WandererCover Flat Panel with ASIAIR

Controlling Your WandererCover Flat Panel with ASIAIR

Stephen Mallia
Wanderer Astro's latest firmware update lets ASIAIR Plus and StellaVita users control the WandererCover V4 series directly from their imaging setup —

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ZWO Duo camera's and compatible image circles

APS-C vs full-frame image circle -S. Mallia
Maximize Performance with the Right Image Circle for Your ZWO ASI2600 and ASI585MC Air Cameras If you're using one of the latest ZWO ASI Air cameras,

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