Thanks for you comments on the image. Glad you liked it.
The Baader UV/IR Cut filter did make two noticeable differences.
The first thing I noticed after I modified my camera was how much red were in the resulting images. As the modded camera could now see InfraRed, I suspected that the excess red was in-part from the sky background acting as a IR heat source. So the filter certainly cuts out IR and the sky background doesn't turn out quite as red is it did previously.
The second thing I noticed after modding the camera was that stars seemed larger - bloated from IR, I guess. So the new filter has also reduced the amount of star bloating.
You can find info about the filter here
http://www.baader-planetarium.de/dow...uvir-Cut_e.pdf
best regards
Paul Mayo