It's now amazing to see that many old school analog astronomical techniques are coming alive and being converted into the new digital world. Many of these techniques and methods need categorization.
* Digital Filters
Filters are made with numbers that dial in highly specific spectroscopic ranges using photo computer image processing
* Amping
Telescope apertures are electronically increased by factors of ten and one hundred
* Flashing
Digital images are treated like the retro film technique that applied a flash of light to the film to increase the density of the faint and dim astro image.
* Aberration Removal
Chromatic aberration and other aberrations are electronically removed.
* Dark Sky
A city setting has a lot of light pollution that did not exist years ago. Strip away some layers of light pollution using physical light pollution filters and/or a digital image process.
* Spectroscopic Film
Make your own "digital" spectral film by selecting the desired spectral characteristics using modern day filters and/or digital computer image processing.
