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Alan et al,
Hmmm
There seems to be an "issue" with the ASI 174 working in this application.
There appears to be significant banding/ spectral ripples generated which have the potential to screw up the image extraction process.
The attached image shows the dark Ha absorption band (across the image) and the resonance bands above and below. The vertical lines are artefacts from the slit plate.
Could be a show stopper.
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