This is my second attempt at the Cat's Eye. This time I used raw files (lights only) and PixInsight following Harry's tutorials and then noise reduction using Noiseware Community Edition. An IDAS LPS-D1 light pollution filter was used but probably not advantageous with such low exposure times. Next step is to learn how to process better with PixInsight and see if I can replace the blown out core with a short exposure low ISO image.