PixInsight Workshop by Vicent Peris / Adler Planetarium
Figure 1 — Superflats
The use of superflats allows us to clean our data from residual gradients introduced by flatfield correction, as can be seen on this example with a M74 image acquired with the 1.23 meter Zeiss telescope at Calar Alto Observatory.
Mouseover: Image after superflat correction.
Mouseout: Image without superflat correction.
