SVBONY 1.25″ UV/IR Cut Filter

Product Overview

The SVBONY 1.25″ UV/IR cut filter passes visible light and blocks ultraviolet and infrared. It is built on optical-glass substrate with optical coatings and threads into any standard 1.25″ filter thread, from camera nosepieces to eyepieces and diagonals. It ships in a plastic storage case.

Who It's For

This is a good match if you image with a colour CMOS, planetary or modified camera and want to keep infrared and ultraviolet light out of your colour data, or if you want a clear protective window in front of a 1.25″ camera sensor.

Key Features & Design

• UV and IR blocking: removes the wavelengths that colour sensors record but that do not belong in a natural-colour image.
• Tighter star images: cutting infrared reduces the bloated stars and soft halos that IR focus shift causes in refractors and many camera trains.
• Optical-glass substrate: coated optical glass for clean transmission across the visible band.
• Protective window: can stay in place permanently as a dust shield in front of a camera.
• Standard 1.25″ filter thread: fits camera nosepieces, eyepieces and diagonals with 1.25″ filter threads.

Recommended Uses

• Planetary and lunar imaging with colour cameras such as the SVBONY SC715C.
• Broadband deep-sky imaging with colour CMOS or modified cameras in a 1.25″ train.
• Sensor protection in front of a 1.25″ camera nosepiece.

Compatibility and Accessory Notes

• Thread: standard 1.25″ filter thread, the same thread used on 1.25″ eyepieces, diagonals and camera nosepieces.
• Cameras: colour CMOS astronomy cameras, DSLRs used with a 1.25″ adapter, and modified webcams.
• With the SVBONY MK127 and SC715C: thread it onto the SC715C's 1.25″ nosepiece before inserting the camera into the telescope.

Good to Know Before You Order

• Size: this is the 1.25″ version. 2″ imaging trains need a 2″ filter.
• Published data: SVBONY does not publish a transmission curve or cut-off wavelengths for this filter. If you need those figures for a specific application, get in touch and we will look into it with you.

Frequently Asked Questions

Is it difficult to set up?

No. It threads into the front of a camera nosepiece or any 1.25″ filter thread by hand.

Do I need it with a mono camera?

Mono cameras usually use dedicated L, R, G and B filters with their own UV/IR blocking. A UV/IR cut filter is mainly for colour cameras.

Can it stay on the camera all the time?

Yes. SVBONY designs it to serve as a permanent protective window.

Bottom Line

In short: a 1.25″ coated optical-glass filter that blocks UV and infrared, for cleaner colour and tighter stars from colour cameras, and a simple way to protect a camera sensor.