Zooming, panning and scaling

StarTools' astrophotography-optimised scaling algorithm can highlight latent pattern issues regardless of zoom level, as seen here. It also shows constant noise levels regardless of zoom level.

Even the way StarTools displays and scales images, has been created specifically for astrophotography.

StarTools implements a custom scaling algorithm in its user interface, which makes sure that perceived noise levels stay constant, no matter the zoom level. This way, nasty noise surprises when viewing the image at 100% are avoided.

Even more clever, StarTools scaling algorithm can highlight latent and faint patterns (often indicating stacking problems or acquisition errors) by intentionally causing an aliasing pattern at different zoom levels in the presence of such patterns.

At 200% zoom level a barely distinguishable horizontal pattern can indeed be seen.