Learned a valuable lesson in adjusting telescope optics with this target after throwing away hours of data gathered after I "tweaked" collimation only to find during processing that I over tweaked it and my optical assessment of the result was poor. Next time, I will take some subs and look closely at the contour maps of FWHM before gathering a bunch of bad data. Had a chance to collimate using a defocused star in the camera (instead of my eyes and an eyepiece) and got a better result. It still need some more tweaking to get a perfect result. Alas, the river of moisture off the Pacific shut me down so I had to abandon hopes of more data to get some better resolution of details on this target.

Several other features are contained in this work.
1) Diffraction Limited printed me an inline 2" filter holder which I mounted the Chroma LoGlow Filter between the filter wheel and the sensor. I was seeing severe gradients from Phoenix light pollution in my RGB subs. This was my least expensive option to block our some of the interfering wavelengths from the Valley.
2) SpectrmetricColorCalibration in Pixinsight allows for loading custom filters. I was able to digitize the scan of the Chroma LoGlow transmission curve and load it into Pixinsight (if you use this filter and need the curve, message me). I then multiplied this custom filter by the standard RGB filters to get the true transmission of the Color/LoGlow filter combination used to acquire the data. The Color calibration difference was subtle, but distinctly different.
3) BlurXterminator was used and eliminated a good hour of my workflow to get "deconvoluted" images, with equal to better quality to my best Deconvolution efforts. I already bought my personal copy.
4) I actually read and looked at tutorials on GeneralizedHyperbolicStretch. While this data for ARP273 was not well resolved enough to get the most out of GHS, I feel like I understand the process better.

Hey, if it is cloudy, we might as well teach "old dogs" new tricks.