Hi, Maybe it's just me being obtuse, but I can not figure out exactly how to create the first instance of a starless image, from an original image that contains a DSO and stars, using Screen Stars.Bill Blanshan and I have released a new script designed to help add and remove stars from images. The script features a preview window so you can see what you are doing! The basic approach is the commonly used screening and unscreening methods, however, we have incorporated an additional option for non-linear data which is to incorporate a "reverse stretch" so that removal and addition is done a 'pseudo-linear" image. This really helps preserve star colour, especially when the starless image for recombination is in a very different colour palette to the image from which the stars have been derived. Bill has created a video explaining the use of the script on his YouTube channel: AnotherAstroChannel. You can obtain the script by adding the following url to your repository list: https://www.cosmicphotons.com/pi-scripts/screenstars/.
Clear skies, Mike
(Visit my website for more PixInsight scripts)
Starnet2 is crashing in my latest build PixInsight Core 1.8.9-2 Ripley (x64) (build 1601 | 2024-03-01).
I did create a starless image of an existing nebula picture with Starnet2 standalone GUI app. I then selected in the Screen Stars script; Star Removal, with the Reverse Stretch box checked, then loaded original image into the Starry View, loaded starless image created w/ Starnet2 standalone into Starless View, finally entering the text "star_mask" , with Create New Image checked in the output field. That works great, but the reason I installed this script was to create brand new starless images from starry images, so I can process the nebula or galaxy, and then recombine them both back together.
So, my number one question is - does Screen Stars support the creation of a starless image from a preexisting image with stars in it? Thanks in advance for any information on this subject.