Hi Lawrence,
The Narrowband preset essentially configures Wipe for a very mild treatment, as narrowband data usually does not show much in the way of gradients (e.g. no light pollution or stray wideband light). You can see how the parameters change between "Gradient" (default) and "NarrowBand" to get an idea of what it does.
Compose and narrowband processing
Re: Compose and narrowband processing
Ivo Jager
StarTools creator and astronomy enthusiast
StarTools creator and astronomy enthusiast