Any removed energy, is collected per pixel and re-distributed across the image in a second pass, giving the user intuitive control, via the 'Grain Dispersion' parameter, over a hard upper size limit beyond which grain is no longer smoothed out.
Even the way StarTools displays and scales images, has been created specifically for astrophotography.
The Wipe module detects, models and removes source of unwanted light bias, whether introduced in the optical train, camera or by light pollution.
StarTools' Detail-aware Wavelet Sharpening allows you to bring out faint structural detail in your images.
You can convert everything you see to a format you find convenient. Give it a try!