TCP J18292290-1430460 = Nova Sct 2018

[Tim Lester]

Here is my echelle result for July 9th.
I have replaced my QSI583 imager with an ASI1600mm pro. I am getting much better S/N, particularly at the blue end. Very pleased.

Tim

[Francois Teyssier]

Excellent, Tim
Thank you for sharing your point of view about ASI1600mm
Did you bin 2,
François

[Tim Lester]

To answer your question Francois I actually binned 3x3 (after calibrating and combining the images un-binned).
This gives a sampling factor of only 2.1 which is not really enough. Also I had to leave optimum binning turned off in ISIS.

Here is the same data processed with 2x2 binnnig and with optimum binning turned on. Sampling is 3.2.

And here is a detailed comparison.

I'm not sure if the gain in S/N for 3x3 binning is justified for very faint objects due to the marginal sampling.

Tim

[David Boyd]

Change in the spectrum of the nova between 3rd and 10th July. V mag has dropped from 10.76 to 11.62 and the (B-V) colour changed from 1.22 to 1.08.
Flux in the H-alpha emission line has increased by almost 30%.
David

[umberto sollecchia]

Bonjour à tous, placé le profil de la nova observé le 11-07-2018 calibré en flux absolu avec la photométrie contemporaine de Paolo Berardi.
Umberto

novasct_20180711_842_Umberto Sollecchia.png (15.51 KiB) Viewed 20658 times

[Paolo Berardi]

Hi all, a new observation for 11 July. The profile is flux calibrated using a contemporary V photometry and low-res spectroscopy (by Umberto).



Heliocentric radial velocity plot (telluric removed):



The mean magnitude during the integration was V 11.30 with an upward brightness trend. The light curve:



Paolo

[Christian Buil]

Nova Sct 2018 during the spectro OHP workshop (Observatoire de Haute-Provence):






Christian

[Paolo Berardi]

Enjoy the workshop, gretings to all of you!

Yesterday observation (13.833 July) with C9.25 and Lhires III 1200.



Radial velocity plot:



Paolo

[Olivier GARDE]

Two last Atel on this nova :

http://www.astronomerstelegram.org/?read=11826
http://www.astronomerstelegram.org/?read=11859

During OHP spectro party Stephane Charbonnel took 2 eShel spectra with a 300mm newton telescope, a challenge according the last magnitude of this nova.
Spectra visible in ARAS database :
http://www.astrosurf.com/aras/Aras_Data ... ct2018.htm

[Paolo Cazzato]

Hallo everybody,
here my last spectra compared with the 4th July consistent with those reported at low resolution.
Since we use a Newton telescope togheter with an Alpy setup, i am strong interest to know more information about calibration spectra and problems about the weight of the cameras and the spectroscope on the newton focuser. I Read Stephane Charbonnel used a newton; does someone tell me more?

Clear nights
Regards