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ZWO OAG-L Off-Axis Guider for Astrophotography - ZWO-OAG-L

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Accessory
ZWO
ZWO-OAG-L
$259

We will price-match Canadian astronomy dealer pricing


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The ZWO OAG-L is the latest iteration of the M68 OAG with a larger prism size of 12*12mm. The bigger clear aperture brings wider field of view in guiding. It is easy to use, and suitable for users who are interested in long focal length photography. To take the most advantage of it, we recommend you to match it with large format guiding cameras.

01

03

Features

  1. Lightweight and exquisite, 17.5mm thickness.
  2. Prism size: 12*12mm.
  3. The effective light-passing aperture is 11.7mm*8.3mm.
  4. Can be used to connect the main camera and guide camera simultaneously. No guide telescope required.
  5. Packaged with an M48 sensor tilt plate (5mm).

02

Operating Guide

  1. For guiding, OAG-L can only work with ASI Mini cameras like ASI174MM Mini, ASI290MM Mini and ASI120MM Mini.04
  2. Considering the large prism size, we don’t recommend you use OAG-L with telescopes whose clear aperture is smaller than M48.
  3. Yet it is recommended to use with 2” EFW or 7x36mm EFW, and with APS-C cameras (ASI2600) or full frame cameras (ASI6200/2400). The large clear aperture supports full frame cameras without vignetting.
  4. The major differences between OAG-L and M68 OAG are about the prism size and the threads. OAG-L removed the inner threads so you can directly use the screws to connect it to other equipment.
  5. If the thread of your telescope side is M48, then you don’t need to remove the M48 sensor tilt plate coming with OAG-L. On the contrary, you need to remove it and use some other sensor tilt plate at the corresponding thread of your telescope.

The pictures below show how to remove the sensor tilt plate:

OAG-L拆解_01(1)

OAG-L拆解_03(1)

Mechanical Diagram

结构尺寸图

Connection Guide

全画幅冷冻相机加OAGL连接方案-英文(1)(2)

APS-C冷冻相机加OAGL连接方案-英文

Please Note

While adding OAG-L into your optical train, please make sure the prism won’t block the camera sensor.

You can use the guiding screw to adjust the guiding camera’s focus length. Please make sure the distance from the prism to the main camera and to the guide camera are the same. To ensure the result, it is better to do this at daytime for the adjustment will be very difficult at night.

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

Items that have been opened, damaged or are otherwise unsaleable will be subject to a minimum 10% restocking fee, to be assessed by Telescopes Canada upon receipt of the returned goods

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Typographical Errors and Order Cancellations

Telescopes Canada reserves the right to cancel an order due to an error in pricing by Telescopes Canada or one of our suppliers, equipment being no longer obtainable, or other events which are out of our control.

Client-Initiated Cancellations

Client-initiated order cancellations are accepted prior to delivery of the equipment to the customer, thereafter it is a return.

Questions & Answers

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