Siril Tutorial für Fortgeschrittene | Hebe deine Bilder auf das nächste Level! Kostenlos!

Introduction

This tutorial aims to elevate your astrophotography skills using Siril, a powerful and free software designed for stacking and processing your astro images. Building on the concepts covered in beginner tutorials, this guide will take you through advanced techniques to achieve stunning results with your photos.

Step 1: Manual Pre-Processing

Part 1

1. Load your images into Siril.
2. Check and adjust the alignment of your frames.
3. Ensure that your images are properly calibrated using dark and flat frames.

Part 2

1. Examine the roundness and Full Width at Half Maximum (FWHM) of stars.
2. Optimize your images based on these metrics to ensure the best focus and clarity.

Part 3

1. Create graphical plots to visualize the data.
2. Use these plots to make informed decisions about further adjustments to your images.

Step 2: Initial Image Processing

1. Begin with the first three steps of image processing:
   • Stack your images: Combine multiple frames to increase signal and reduce noise.
   • Apply background calibration: Clean up the background to enhance the overall image quality.
   • Adjust contrast and brightness: Fine-tune these settings to reveal more details in your images.

Step 3: Advanced Techniques

Deconvolution and Dynamic PSF

1. Apply deconvolution to enhance image sharpness.
2. Utilize Dynamic Point Spread Function (PSF) for better star shape correction.

StarNet for Star Removal

1. Download the CLI version of StarNet from the official website.
2. Unzip the downloaded file to a designated folder.
3. In Siril, navigate to settings and specify the path to the StarNet executable.
4. Use StarNet to remove stars from your image, allowing for improved background processing.

Noise Reduction

1. Apply a median filter for initial noise reduction.
2. Use Siril’s built-in noise reduction tools to further refine image quality.

Step 4: Final Adjustments

Generalized Hyperbolic Stretch (GHS)

1. Apply GHS to the background and stars separately to enhance details.
2. Adjust color saturation to make the image pop.

Comparison of Edited Versions

1. Compare the processed version of your image against the original.
2. Note the differences and determine the effectiveness of your editing techniques.

Conclusion

In this tutorial, we've explored advanced techniques for processing astrophotography images using Siril. From manual pre-processing to employing tools like StarNet and GHS, these steps will help you achieve remarkable results. Don't hesitate to experiment further and refine your skills with additional resources and practices. Happy astrophotography!