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Ah... Hi Julian.
Sorry I moved your last post, I thought you were asking about AP.
As Ken said you should be able to do some bright low resolution spectroscopy with a StarAnalyser. The trick is to rotate the star analyser so it spreads the spectrum at right angles to the direction of drift. That way the spectrum is spread out in width without blurring the detail in the spectrum.
14.5" aperture will help though.
Al.
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