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Well, at your current image scale, you won't notice a great deal of difference between an IR/UV cut filter or not, but most will advise you (like me) to put it on & leave it on. It's usually part of the problem regarding focus. Colours 'bleed together' without a filter because webcams see a lot more wavelengths (IR & UV) that the eye cannot, & the cam can't focus all these different wavelengths. The effect is worse if the target is at a low alt.
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