ZWO 1.25'' IR/UV Cut Filter
 ZWO 1.25'' IR/UV Cut FilterZWO 1.25'' IR/UV Cut Filter 

ZWO 1.25" IR/UV Cut Filter

  (17 Reviews)
✓ 2 year warranty


12x in stock shipped 1-2 working days

1 x Customer Return Available

ZWO 1.25" IR/UV Cut Filter

£23.00 £20.00

About this product

Model:  zwo_ir_cut_125
Part Number:  ZWO-IRCUT1.25

The ZWO 1.25″ IR UV CUT filter is suitable for colour cameras with an AR protection window.

The ZWO IR-Cut Filter blocks infrared light from reaching the sensor of your CCD or CMOS camera or your expensive H-alpha filter. When imaging, adding this simple and inexpensive accessory will result in sharper images. The IR Cut Filter will protect your H-alpha filter from the damaging effects of infrared radiation.

Infrared or IR light is invisible to the human eye, so even though most telescopes are not designed to focus IR light, it does not matter when you use your telescope for visual astronomy. However, unlike the human eye, a camera sensor is sensitive to light in the infrared portion of the spectrum, which harms image sharpness. This ZWO IR Cut-Off filter solves the problem by blocking infrared light. 

The ZWO IR-Cut filter is available in a 1.25” or 2" cell.

The price includes a protective plastic case.

Customer reviews

Average Rating (17 Reviews):  
Write a Review and share your opinions!

Rating (max 5):  
ZWO ir cut filter
11 March 2024  | 

The filter does as intended, however the service from FLO was outstanding. The filter was in the post within an hour of ordering and arrived first thing next day. Thanks FLO!

Rating (max 5):  
07 April 2023  | 

Arrived well packed as usual ,sensible price does the job .

Rating (max 5):  
Nice filter
09 December 2022  | 

Works well on my CMOS camera and a decent price

Rating (max 5):  
IR filter
02 August 2022  | 

A must if taking any frames or just viewing anything that includes vegetation. Very satisfied with results.

Rating (max 5):  
Great Filter and Fantastic service from FLO
12 July 2022  | 

Great Filter , just what I needed. Another first class service from FLO.

Rating (max 5):  
Very good
13 June 2022  | 

They work fine, would recommend.

Rating (max 5):  
Great filter
27 January 2022  | 

I bought this filter for my zwo asi294mc pro as the 2 inch was out of stock. I fitted it with the attachment that came with my 294MC pro and dfit tight up to the lens, I still get a bit of vignetting in the corners as the sensor is bigger but this can be calibrated out with flats. It makes my final processed image much more sharp and contrasted, so we'll worth the money and does all the more expensive ones do.

Rating (max 5):  
No stacking thread
17 January 2022  | 

Appears to work well when used for imaging planets. However, I wanted to stack with a UHC filter for deep sky imaging and the internal thread mentioned in the description for this purpose wasn't present on the 1.25" version I got as a package with a ZWO camera.

Rating (max 5):  
Zwo ir filter
24 June 2021  | 

Excellent experience..easy and quick transaction ..thanks

Rating (max 5):  
IR cut filter
25 May 2021  | 

Looks great. But when fitted to my ZWO 224mc it will not fit into my Celestron 1.25" light back. It's just .5mm too wide. Perplexed by this.


We've never come across this issue before - it sounds like something is 'off' with either the filter machining or your visual back. Please get in touch and we can swap the filter and try another.

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