yes i have done a clear glass full spectrum mod before, nice Ha response but star bloat was excessive.
i then used a clip in astronomik CLS-CCD filter which was great and took care light pollution and star bloat - there are plenty of other similar solutions out there now.
there is also a OWB (original white balance) filter you can use for regular daytime photography - although i would just use a different camera or custom edit the balance post processing tbh - plenty of cheap second hand dslr's which work great in daylight for about the same price as the filter!
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