Two images of the spectrum of the nova tonight in very difficult conditions. Just a handful of images possible through gaps in the cloud so not great.
But wow!…what a change in just a few days. A very boring continuum on 26th and now really wide and bright emission lines. [They get wider towards the blue end (H gamma) due to the non-linear dispersion of the prism].
Mike.
(20cm diameter, 9 degree prism on the 12 inch F/3.6 telescope. 15 x 10 second exposures).
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Supporting amateur astronomers since 1890
