H-alpha with a Coronado Solarmax II 60 BF15 H-alpha scope scope, an SVBONY SC715C OSC CMOS camera and AstroDMx Capture, capturing 2 overlapping RAW 2000-frame SER files. The White light images were capture with a Panasonic Lumix DMC-FZ72, 60x optical zoom Bridge camera through an ICE ND100000 solar filter.
The best 75% of the frames in the SER files were stacked in Autostakkert!4.
The resulting images were wavelet processed in waveSharp. The images were cropped so that any edge artefacts at the edge to be stitched were removed. The two images were then converted to greyscale and stitched in MS ICE.
The bridge camera images were precisely cropped and registered in Nicola's AstroCrop and the best 75% were stacked in Autostakkert!4. The resulting image was wavelet processed in waveSharp.
The H-alpha and White light images were both further processed in Gimp and Photoshop CS2.
The H-alpha image was processed in PixInsight Solar Tool Box and then, indpendently colourised in PI Solar Toolbox and Solar Gun (which colourise for H-alpha in slightly differet ways. The two colourised images were merged in Gimp.
The H-alpha and White light images were blended in Picture Window Pro using shift-rotate-scale. The blended image was then given a gentle processing in PI Solar Toolbox without colourisation.
The White light image was gently colourised in Gimp and the H-alpha/White light blended image was colourised in Gimp to a yellow with a slight reddened Hue to represent a point in the spectrum representing the merge.
The reason for merging a white light image and a H-alpha image of the Sun is that white light shows more of the Sunspots whereas in a H-alpha image, the sunspots are slightly less distinct, particularly the pore components. The merged image shows good detail of all of the chromosphere and photosphere components.
Click on an image to get a closer view
H-alpha grey scale image
Steve Wainwright and Nicola Mackin
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