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Intricate Stretching and Contrasting using SIRIL
Looking for detailed guidance on achieving well-defined, high-contrast astronomical images?
In this intermediate SIRIL tutorial, Telescope Live Co-Founder Alexander Curry delves into the Generalized Hyperbolic Stretch (GHS) transformation and the Contrast Limited Adaptive Histogram Equalization (CLAH) tool. Using the monochrome Rosette Nebula as an example, Alex demonstrates how to manipulate the GHS for optimal data stretching and contrast enhancement. The tutorial walks through setting symmetry points, adjusting stretch factors, and using the CLAH to fine-tune image clarity and sharpness.
Mastering H-alpha Contrast - Guide to PixInsight's Continuum Subtraction Script
Discover how to use the Continuum Subtraction Script in PixInsight with Masters of Pixinsight Co-Founder Ron Brecher. In this tutorial, Ron shows you how to install the script and apply it to your images. The Continuum Subtraction Script removes non-H-alpha red wavelengths from H-alpha images, significantly enhancing contrast and revealing fine details. Ron walks through selecting the H-alpha and red views, adjusting settings to avoid over-subtraction, and fine-tuning for optimal results.
This script is especially useful for highlighting H-alpha regions in broadband objects like spiral galaxies. Examples include popular targets such as M33, M31, and NGC 6946. Additionally, Ron shares tips on using the script with oxygen and sulphur channels to further refine images.
Finishing Touches and Advanced Processes in Photoshop
Join multi NASA APOD winner and Telescope Live tutor Bernard Miller for a Photoshop post-processing webinar. Photoshop has a suite of features for sharpening and noise reduction that can be applied also to astrophotography. In this webinar, Bernard will focus on some key processes that will enhance your post-processing skills. Finally, he will cover the steps required to perform star/halo reduction - all inside Photoshop (no plugins required!).
Creating High SNR Synthetic Luminance in PixInsight
This tutorial by MoP Co-Founder and award winning astrophotographer Ron Brecher is introducing a new approach for creating synthetic luminances in Pixinsight. Ron will show you how to use your existing HaLRGB data (and the processes that must be applied beforehand) in order to create a synthetic luminance that out-performs low-integration luminance data. This method is particularly useful to allow you to prioritise colour data acquisition and still create a high SNR luminance dataset. This method uses only the processes within Pixinsight although external scripts and plugins can also be used to speed up certain processes.