Sunday 12 September 2021

Combining H-alpha and Ca K-line solar images

Imaging was done with a CaK PST, a Solarmax II, BF15, H-alpha scope and a DMK  31AU03.AS CCD camera, mounted on a Celestron AVX mount.

The data were captured as SER files with AstroDMx Capture.

Click on an image to get a closer view

Screenshot of AstroDMx Capture saving a SER file of Ca K-line solar data


Screenshot of AstroDMx Capture saving a SER file of H-alpha solar data

The SER files were stacked in Autostakkert!, wavelet processed in Registax and post processed in the Gimp 2.1.

Results

Ca K-line light


H-alpha light


The Ca K-line and H-alpha images were combined in Picture Window Pro 2.5 running in Wine, using translate, rotate and scale to exactly match the features on both images and to blend the images together.

H-alpha plus Ca K-line merged


Combining Calcium and H-alpha images in this way allows one to see the different types of structure revealed by each wavelength.