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This relatively modern paper sums it up (I did not realise before that some of these lines do not always track the dust or even each other)
Still bright – last evening I had the nova at V~8.3. Technically this is an easy binocular target, especially now the Moon is receding.
Here’s a light curve of the Nova which Philip Jennings just showed at the BAA meeting.
Prepared yesterday (Dec 4). Latest obs early this AM put it at mag 8.9
I just updated the LC with data up to 2021 Jan 2. The last data points hint that might be beginning to fade a bit faster. Keep watching!
When making this plot, I was struck by the undulations in the LC at ~daily intervals. I’ve not looked into whether these are artefacts or genuine.
Here is what I have for this light curve, calibrated to G-band. It agrees quite well with that presented above, esp the transient brightening around 2459190. (Disregard the outlier around 2459200 due to overexposure.) I don’t have the continuity to confirm the undulations of ~1day mentioned above. But I have seen oscillations with a variety of short periods. I wonder if the data used to create the combined BAA/AAVSO figure is directly available so that I could more closely compare?
Yes you can download all the data from both databases. There is a link to the VSS db under “observations” at the top right of this page.
There is an updated light curve on the VSS website: https://britastro.org/vss/
Your dara show just how active this nova is!
I see this has now faded to Vmag ~15 so time for perhaps a last low resolution spectrum. It shows a nebula type spectrum with strong forbidden emission lines, particularly [OIII] and a very weak almost undetectable continuum (The Y scale is relative to the continuum at 5500A and the signal/noise in the continuum is down in single figures). In fact I estimate 78% of the light in the V passband comes from just the [OIII] pair of lines at 4959/5007 A
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