Stacking Comparison

This image is a side by side comparison of images produced by the "Industry Standard" - RegiStax (Left) and a new comer - AviStack (Right). View the full resolution image to get the full impact of the comparison.

The RegiStax result (Left side) was produced using the Human grading algorithm and 20 alignment points. The stack is the best 200 out of 1300 frames. The image was sharpened with Wavelets in RegiStax and a modest Adaptive Richardson-Lucy in ImagesPlus. I applied a Gamma correction of 1.30 in PhotoShop.

The AviStack result (Right side) used a 32 pixel grading grid and had 1688 alignment points. The TIFF output file was converted to RGB in PhotoShop so that RegiStax would read the file for subsequent wavelet sharpening. As with the other image, a mild 5-iteration RLD with a 3x3 Gaussian PSF was applied in ImagesPlus and the gamma adjusted in PhotoShop.

Comments: As you have probably already concluded for yourself, the AviStack result is clearly superior. The over all resolution increase is striking. A complete review of AviStack can be found on my blog.