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Mastering Monochrome Post-Processing in Affinity Photo V2
In this tutorial, James Ritson offers a comprehensive guide to monochrome astrophotography using Affinity Photo V2. James will show you how to stack narrowband data, focusing on H-alpha, sulfur-2, and oxygen-3 images, with adaptability for broadband RGB mono data. He begins by demonstrating how to add light and calibration frames and utilize the File Groups feature for organized processing. James teaches you how to blend and color map data using the classic Hubble Palette and balance the intensity of emission layers with the Linear Fit tool. Additionally, he provides techniques for enhancing images with selective color adjustments, noise reduction, and a final crop for composition.
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.