How do I create the effect that is shown in Adobe Lightroom Sharpening - Masking - preview?

Yesterday, I photographed the comet C/2020 F3 ("NEOWISE"). I took several images and stacked the best ones using Deep Sky Stacker. I post-processed the image using Adobe Lightroom.

Normally, when I sharpen my images, I use the preview function when moving the slider with my mouse, by pressing the Alt (or Option on Mac) key. This shows a processed, grayscale image, that helps to get the "right" amount of the effect I’m working on, without overdoing it (See Adobe’s help page on this topic).

I was sharpening my NEOWISE image, and when adjusting the Masking slider of the Sharpening option in Adobe Lightroom CC, pressing Alt/Option showed an amazing detail in the tail of the comet (see picture of my monitor below).

My questions are:

1. What is the effect/process that Lightroom shows when Alt/Optioning the Masking slider?
2. Can I recreate this effect in Lightroom or Photoshop, and how?

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Processed image of NEOWISE:

Photo of my monitor with the desired effect: