Yes, it looks like the spectrum is changing rapidly. The spectrum this morning shows stronger emission lines and weaker continuum in line with the decreasing magnitude. Still processing the images to get a nicer picture but first look attached.
Given how the spectrum of Nova Aql 2026 changed so quickly it is well worth observing Nova Tau 2026 at every opportunity.
Weather here not looking too good for the next few days so it could be the end of the week before I get anything else.
Mike.
Update: Slightly better image now in the Gallery
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