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Another Nova in Sagittarius
Posted: Thu Jul 19, 2012 1:34 pm
by Terry Bohlsen
Dear All.
Another nova candidate has been announced on CBAT in Sagittarius called PNV J18193700-1907400
It is only about V =12.7 so quite dim.
I took 30 minutes of spectra of it before I got clouded out. It shows Ha emission but not much else. Enough to confirm that it is a nova though.
http://users.northnet.com.au/~bohlsen/N ... tarius.htm
Terry Bohlsen
Re: Another Nova in Sagittarius
Posted: Fri Jul 20, 2012 1:48 am
by Terry Bohlsen
The nova is now called NOVA SAGITTARII 2012 No. 5
see
http://www.cbat.eps.harvard.edu/iau/cbe ... 003184.txt
Terry
Re: Another Nova in Sagittarius
Posted: Fri Jul 20, 2012 5:17 am
by Francois Teyssier
Excellent Terry.
I have to update the aras page
A fireworks of novae this year
Best regards
François (always under the clouds)
Re: Another Nova in Sagittarius
Posted: Sun Jul 22, 2012 12:53 am
by Christian Buil
Good job Terry !
At V=12.7 the object become seriously faint.
Christian
Re: Another Nova in Sagittarius
Posted: Sun Jul 22, 2012 11:50 pm
by Francois Teyssier
Tonight spectrum
The nova stil rises (Mag V = 11.2 from AAVSO)
The FeII lines appears

- _nova2012sgr5_20120722_871.png (4.04 KiB) Viewed 16942 times
François
Re: Another Nova in Sagittarius
Posted: Mon Jul 23, 2012 5:17 am
by Terry Bohlsen
Very good. I wasn't going to bother taking anymore but if it is still rising it might be worth it if I ever get a clear night again.
Terry
Re: Another Nova in Sagittarius
Posted: Mon Jul 23, 2012 8:28 pm
by Christian Buil
At the same moment as François Teyssier acquisition, the observation of nova
from Toulouse (south of France) (C11 + LISA 23 microns slit + Atik314L+).
The field from the LISA guiding camera (Atik314L+ camera) - 20 sec. exposure :
The spectrum (12x 300 sec exposure):
Christian B
Re: Another Nova in Sagittarius
Posted: Wed Jul 25, 2012 12:22 am
by Christian Buil
Un nouveau spectre (23.8 juillet). La nova monte d'éclat
et l'intensité relative de Halpha diminue. On note aussi l'apparition
d'un profil P-Cyg sur l'hydrogène entre-autre :
Christian
Re: Another Nova in Sagittarius
Posted: Wed Aug 01, 2012 1:42 pm
by Terry Bohlsen
I took further spectra of this nova on 25th and 29th July. I also took photometry of it on 29th giving a V mag of 11.0 and R = 10.39.
More into here
http://users.northnet.com.au/~bohlsen/N ... tarius.htm
There was a very rapid increase in the intensity of the Ha line over the 4 days.

- _novasgr2012no5_20120725_474.png (6.54 KiB) Viewed 16830 times

- _novasgr2012no5_20120729_466.png (5.43 KiB) Viewed 16830 times