How does the ZWO T2-1.25" Adapter affect my back focus?

The adapter adds exactly 1 mm of mechanical length to your imaging train. This is a minimal distance designed to preserve the critical back focus required by most optical correctors like field flatteners or coma correctors.

Will this ZWO adapter work with non-ZWO cameras and filters?

Yes. The adapter uses the universal M42 (T2) thread standard on the camera side and accepts any standard 1.25" astronomy filter. It is compatible with any T-threaded astronomy camera and any brand of 1.25" filter.

Can I use the ZWO T2-1.25" Adapter with a filter wheel?

No, this adapter is designed as an alternative to a filter wheel for single-filter applications. It threads directly into the camera body where a filter wheel would normally attach. It is ideal for monochrome guide cameras or for color cameras where you only need to add a single light pollution or UV/IR cut filter.

What is the advantage of this adapter over a 1.25" nosepiece with filter threads?

The primary advantage is rigidity. A direct M42 thread connection prevents the tilt and sag that can occur with a nosepiece held in place by thumbscrews. This secure, parallel connection is crucial for avoiding image degradation, especially with sensitive optical systems.

Is the ZWO T2-1.25" Adapter a good choice for adding a UV/IR cut filter to my ASI178MC for lunar imaging?

Absolutely. For planetary, lunar, or solar imaging with a one-shot-color camera like the ASI178MC, adding a single UV/IR cut filter is critical for sharp focus. This 1 mm adapter provides the most secure and lowest-profile method to do so without altering your setup significantly.

How do I tighten the ZWO T2-1.25" Adapter?

The adapter has four small holes on its face. While it can often be tightened by hand, if you need extra leverage, you can use a spanner wrench or the tips of a small pair of needle-nose pliers inserted into two opposing holes to gently secure it to your camera body.

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Canada (CAD$)

ZWO Adaptateur de Filtre T2-1.25"

par ZWO

UGC ZWO-T2-1.25-3

CA$22.00 - CA$22.00

CA$22.00

CA$22.00 - CA$22.00

CA$22.00

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9 en stock

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Paramètre technique:

Nom : Adaptateur de filtre T2-1,25 ″

Filetage: filetage mâle M42 * 0,75 extérieur, filetage femelle M28,5 * 0,6 intérieur

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ZWO Adaptateur de Filtre T2-1.25"

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