This turned out to have been discovered on the 4th November by PMO-Tsinghua Supernova Survey.
This is a pre-discovery image of nova 2017hxw discovered the following day by E Conseil.
It was very faint and I missed it.
In fact, the object has been around for a long time. This was from August 23rd:
November is proving to be a good month for novae.
Nova discovery number three!
This was bright and easy to spot.
There were other independent discoveres. Kamil Hornoch and K. Nishiyama and F. Kabashima.
Kamil Hornoch published the ATEL
Magnitude estimate at 16.2
This animation shows the nova getting dimmer in each image, due to worsening sky conditions:
The subtraction method shows the nova plus one close to the core:
I also took some widefield images of M31 using a DSLR piggybacked on the main scope.
ATel #10986 was published. This confirmed that spectroscopic studies of the object
discovered on 16th November showed it to be a member of the He/N class.
It was cloudy here so to check on the nova I took an image remotely using the iTelescope facility in Spain.
I did not have any reference images and so missed another discovery. This was spotted the following day.