NoiseChisel: how to detect diffuse signal in noise (hands-on)

Hands-on introduction on the inner working of NoiseChisel by Dr. Mohammad Akhlaghi. NoiseChisel is a program in GNU Astronomy Utilities (Gnuastro) that is in charge of separating signal from noise in a 2D image or 3D datacube (and as a side-effect, measuring an accurate background level for the data). This video was made with Gnuastro 0.15 (released on 2021-05-31). Updates in NoiseChisel will be published in the Gnuastro manual (discussed in video). See the links below for more related video, text and software: Video of colloquium on NoiseChisel: http://a.impartus.com/ilc/w/v/VQoO Video of hands-on Gnuastro demo: https://www.youtube.com/watch?v=6mp5-... Slides of NoiseChisel talk: http://akhlaghi.org/pdf/noisechisel.pdf First (main) NoiseChisel paper: https://arxiv.org/abs/1505.01664 Paper on improvements after 10 versions: https://arxiv.org/abs/1909.11230 Gnuastro webpage: http://www.gnu.org/software/gnuastro/ Gnuastro in Conda: https://anaconda.org/conda-forge/gnua... Gnuastro manua