Drizzle or Upscale with interpolation for 4k mode ?

gofraro

There are a lot of discussions around the new 4k feature and how it works.
I‘ve read posts stating, that it is achieved with drizzling / shaking / and some more explanations.
Fact is, we got a new image size.
But I‘m curious to hear/read, how this is actually achieved, and I‘m keen for ZWO/Seestars explanation.
As most of the experienced users know, there are a number of interpretations about drizzle.
Is it a real HST-drizzle algorithm ?
Is it also used for debayer (Debayer-Drizzle) ?
Is it (only) an interpolation ?

How you describe it, dear Support ?

Support@Seestar

Each pixel in the low-resolution image is divided into smaller subpixels, which are then "drizzled" onto the corresponding positions of a higher-resolution grid according to displacement weights.