1. In the subsequent stage of the astrophotography workflow, the software of choice for further refinement is Registax, specifically version 6 or version 5. Registax serves a dual purpose, primarily facilitating the stacking of frames from the previously generated AVI file and offering advanced wavelet adjustments to enhance the intricate details of sunspots.
2. The alignment and stacking process within Registax involve selecting a reference point for alignment. This reference point can be either a faintly visible sunspot or the geometric center within the image. Frames that exhibit poor alignment are intelligently identified and removed during the stacking process, ensuring that only accurately aligned frames contribute to the final composite image.
3. Once the frames are aligned and stacked, the focus shifts to wavelet adjustments, a crucial step in refining the visual quality of the image. Users have the flexibility to adjust the wavelet values, effectively controlling the sharpening and denoising aspects of the image. Striking a balance, the values are set to a "sweet spot" that enhances the intricate details of the sunspots while minimizing the introduction of unwanted noise into the image.
4. The output of this processing stage is a single stacked TIFF file, meticulously crafted to showcase the refined and enhanced details of the sunspots. This final output can be compared visually with an image taken by NASA's Solar Dynamics Observatory (SDO) Helioseismic and Magnetic Imager, providing a benchmark for the achieved quality and fidelity. The utilization of Registax in this phase elevates the solar images, bringing out the subtle nuances of sunspots and contributing to the overall precision and clarity of the astrophotographic results.

NASA’s image taken from space

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