What cameras are compatible with the ZWO 2.5mm All-Sky Lens?

This 2.5mm lens is specifically designed for cameras with a 1/2" sensor format and a CS-mount. It is an excellent match for models like the ZWO ASI178MM, ASI178MC, and ASI185MC. It will also work with the ASI120 series.

Do I need any adapters to use the ZWO 2.5mm lens?

It depends on your camera's mount. The lens has a CS-mount thread. If your camera (like the ASI178) has a native CS-mount, it will attach directly. If your camera uses a C-mount, you will need a C-to-CS mount adapter ring to achieve focus. This adapter is not included.

Is the ZWO 2.5mm lens good for capturing the Geminids meteor shower?

Yes, absolutely. Its 170° field of view makes it perfect for meteor showers. You can point the camera straight up and capture meteors appearing anywhere in the sky without having to aim, making it an ideal setup for automated meteor detection with software like SharpCap or FireCapture.

Will this 2.5mm lens work with a larger sensor, like an APS-C camera?

No, this lens is not recommended for sensors larger than 1/2". The image circle it projects is too small for larger sensors and will result in severe vignetting, showing only a small illuminated circle in the center of a large black frame.

Can I use filters with the ZWO 170° All-Sky Lens?

This lens does not have a standard filter thread on the front or rear element. It is designed for wide-field, unfiltered imaging of the night sky. Attempting to place a filter in the optical path would require a custom solution.

How do I focus the ZWO 2.5mm lens?

The lens has a manual focus ring. You will need to adjust it by hand to achieve sharp stars. It's best to perform this at night, viewing a live feed from the camera on a laptop screen and adjusting the focus until stars appear as tight points of light.

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ZWO Lentille 2.5mm 170°

par ZWO

UGC ZWO-LENS-2-5

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CA$31.00

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CA$31.00

CA$28.00

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Objectif ZWO 2,5 mm à 170 degrés

Paramètre technique:

Prise en charge des formats : capteur 1/2″

Focale : 2,5 mm

Grand ange : 170 degrés

Modèle correspondant : ASI178MM, ASI178MC, ASI185MC

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ZWO Lentille 2.5mm 170°

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