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Re: PNV J20233073+2046041 mag 6.8

PostPosted: Fri Aug 23, 2013 2:38 pm
by Benjamin Mauclaire
Hello,

Here is a synthesic overview of Ha's behaviour since last August 15th.

Image

It corresponds to 51 hours observations where only one spectrum (600s exposure) per hour were selected for this graph.
We then have a movie of nova's life during 7h every day.
If some observers living in USA could do such runs, it would be great for Science!

Cheers,

Benji

Re: PNV J20233073+2046041 mag 6.8

PostPosted: Fri Aug 23, 2013 9:34 pm
by Olivier Thizy
Hello,


well... I must have some weather's god attention or some luck at the moment... here is my 10th night in-a-row on the nova!!!

Here is the update of the graph with 10 spectra (one per night):
nova.jpg
nova.jpg (193.02 KiB) Viewed 5107 times



I also updated my colored graph with the 10 spectra, it shows very nicely the evolution:
novaDel2013_spc_20130814-23_Othizy.jpg
novaDel2013_spc_20130814-23_Othizy.jpg (171.29 KiB) Viewed 5107 times



Equipment is:
-Televue 85mm refractor
-Alpy 600 spectrograph
-Atik 460ex camera for acquisition


Cordialement,
Olivier Thizy
Vous ne verrez plus des étoiles comme avant !
http://www.shelyak.com/en/

Re: PNV J20233073+2046041 mag 6.8

PostPosted: Sat Aug 24, 2013 2:57 pm
by Olivier GARDE
I have 22 spectras of the nova since august the 14th and to show the evolution of Ha line, and I have tried to achieve a dynamic range of all my data. (nine days of observations)

Image

Re: PNV J20233073+2046041 mag 6.8

PostPosted: Sat Aug 24, 2013 9:22 pm
by Eric Barbotin
Je viens enfin de réussir à traiter mon image des raies H&K du calcium. Ca a pas été simple car j'ai pas trop l'habitude de ce coin là du spectre, mon signal était assez faible et la calibration a été délicate.
Bref, après avoir utilisé tous les logiciels possibles, j'ai réussi à obtenir quelque chose de cohérent à la fois dans VisualSpec, SPCAudace et ISIS (j'ai même ressorti un vieux SPIris de derrière les fagots...)
Ce soir, ici, c'est couvert ; j'attendrai lundi au mieux pour remettre cette expérience. Le télescope est resté dans la configuration de vendredi, ça devrait aller mieux mais je monterai le temps de pose.


I have just finish to process my image of H & K lines. It was a bit hard for me because it is the first time I went to that corner of the spectrum, my signal was quite weak and the calibration was perilous.
Anyway, I got something coherent in both VisualSpec, SPCAudace and ISIS (and a good old SPIris from an old hard disk ...)
The forecast is bad between Bordeaux and Cognac for two days. I will wait for Monday. The telescope remains in the configuration of Friday, it should be better but I surely have to push the exposure time.


Eric

Re: PNV J20233073+2046041 mag 6.8

PostPosted: Sat Aug 24, 2013 10:18 pm
by Paolo Berardi
Olivier, dynamic spectrum is fantastic!
Eric, you capture CN emission at 3886A? This night, with Lhires III 600 it seems not visible...
Someone can confirm?

Ciao
Paolo

Re: PNV J20233073+2046041 mag 6.8

PostPosted: Sun Aug 25, 2013 12:13 am
by Christian Buil
Eric, very important. Evaluate your 2D and look if the feature near 3880 A is real (a cosmic rays, ...).

Presently, from Toulouse and on only one 300 sec. cloudy exposure (!) near H&K with eShel I detect anything.

Christian

Re: PNV J20233073+2046041 mag 6.8

PostPosted: Sun Aug 25, 2013 12:31 am
by Robin Leadbeater
Nothing there tonight.

Robin

Re: PNV J20233073+2046041 mag 6.8

PostPosted: Sun Aug 25, 2013 1:59 am
by Christian Buil
Spectre échelle en date du 25.958 :

Echelle spectrum for the date August 25.958:

Image

L'aspect de la raie Halpha (CN212 + eShel, beaucoup de nuages). Les deux courbes montrent l'évolution en 3h30m de temps - par
rapport au continuum, l'intensité continue à grimper :

Aspect of Halpha line and fast evolution (the intensity continue to increase relative to continuum):

Image

Evolution of 4200 A region from 22.9 to 24.9 August:

Image

and the ratio for the two date:

Image

On note pas mal de changement (une raie semble enre-autre apparaitre vers 4385 A) :

Some variation (note a feature at 4385.5 A) but not CN line at 4216 A for the
moment.


Christian

Re: PNV J20233073+2046041 mag 6.8

PostPosted: Sun Aug 25, 2013 5:31 am
by James Edlin
Hi, last 2 nights have been cloudy. Tonight after storms past got a 40 min clearing, just enough the get a spectrum of Nova Del 2013. Below my plot of the spectrum. Wonder when the Balmer series will stop rising??

Jim

Re: PNV J20233073+2046041 mag 6.8

PostPosted: Sun Aug 25, 2013 7:38 am
by Eric Barbotin
Hello, Ive check the 2D image and all the individuals frames ; it's a cosmic...

Eric