I have done the IR Filter modification mentioned
HERE and I have posted the results in this thread.
This image shows the comparison of 'The Keyhole Nebula in Carina' with and without the IR Filter. Both images are 3 minute exposures with identical settings.
The first thing to notice is that the Filter does not bloat the stars as much as without the filter, making them much crisper. Secondly, the background sky is darker. And thirdly, the Stars have colour! I prefer the IR Filtered version.
