Sunday, April 20, 2025

H-alpha and Ca K-line solar imaging

Equipment used:

A solar Quest Solar finder and tracker mount.

A Coronado CaK PST scope.

A Coronado Solarmax II 60 BF15 H-alpha scope.

An Altair 462M2 monochrome CMOS camera.

With each scope in turn, two overlapping 1500-frame SER files were captured with AstroDMx Capture.

The best 75% of frames in each SER file were stacked in Autostakkert!4. The overlapping pairs of images were stitched in MS ICE, wavelet processed in waveSharp and finished with Gimp and ACDSee.

The Ca K-line image and the H-alpha image were merged in Picture Window Pro before finishing in Gimp and ACDSee.

Click on an image to get a closer view

H-alpha image


Semi negative H-alpha image


Ca K-line image


H-alpha-Ca K-line merged image


Steve Wainwright and Nicola Mackin

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