Ontario Telescope and Accessories

Ontario Telescope and Accessories Ontario Telescope and Accessories, where OTA means more. Offering shipping across Canada, and personal service to ensure customer satisfaction.

Ontario Telescope and Accessories is an online destination for hobbyists and astronomers that are looking for new equipment. Authorised dealers for iOptron, Lumicon, Explore Scientific, Antares, and other high quality manufactures. Don’t be surprised if you receive an email response from us in the middle of the night, or on a weekend. Shop for your equipment 24 hours a day from the comfort of your home.

đź”­ Upgrade your focus.The Event Horizon ZWO EAF EVRZ Cassegrain Focuser adds smooth, repeatable, ASCOM-compatible focusin...
06/18/2026

đź”­ Upgrade your focus.

The Event Horizon ZWO EAF EVRZ Cassegrain Focuser adds smooth, repeatable, ASCOM-compatible focusing to your imaging setup.

Sharper focus. Easier automation. Better nights under the stars.

Event Horizon EVRZ ASCOM-compatible robotic telescope focuser adaptation for ZWO EAF Cassegrain imaging setups.

Milky Way Season is here! One of the best ways to Sweep across the Milky Way is with a pair of Binoculars! We put toge...
06/17/2026

Milky Way Season is here! One of the best ways to Sweep across the Milky Way is with a pair of Binoculars! We put together some of the best options for doing just that.

Check out the first comment for more information on Astronomy Binoculars.

06/13/2026

Ontariotelescope.TV - Soccer, Power, and Ai. What do they have in common ??

Want to make the sky POP! The all new Celestron Gemini 2x40 Binoculars do just that.See a brighter night sky that is ea...
06/11/2026

Want to make the sky POP! The all new Celestron Gemini 2x40 Binoculars do just that.

See a brighter night sky that is easy to follow.

more in the comments.

Pro Tip…when running a plan in your ASIAIR and you run a Dew heater from your ASIAIR, don’t shutdown the ASIAIR when the...
06/08/2026

Pro Tip…when running a plan in your ASIAIR and you run a Dew heater from your ASIAIR, don’t shutdown the ASIAIR when the plan is complete.

The risk of Dew forming and getting into your optics is much higher with the power removed from the power ports.

06/06/2026

Ontariotelescope.TV - it’s getting sticky out there….time for dew prevention.

And planning a big demo for next week

05/30/2026

Ontariotelescope.TV - Seestar update. Sounds like an awesome feature. Skywatcher wraps up this month. Anyone have ASIAir issues?

05/30/2026

There is a new firmware out for the S30-Pro and it can do a couple of cool things

Tune in at 10:00 am Saturday morning to learn more

05/24/2026

We get asked about back space and reducers and flatteners all the time! So we made a blog article about it. Check out the first comment for the link

05/23/2026

Ontariotelescope.TV - Milkyway season is almost here.

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670 Hardwick Road Unit 5
Caledon, ON
L7E5R5

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