V335 Vul

V335 Vul is a symbiotic star, very red, Carbon star with a strange spectrum containing C2, CN... absorption bands (and not TiO as for classical red giants).

It is very faint but I was able to take a 4h15min total exposure time with the échelle spectrograph showing a spectrum with lot of details.

The spectrum is now on ARAS database for access by anyone:
http://www.astrosurf.com/aras/Aras_DataBase/Symbiotics/V335Vul.htm

 ALADIN field of view and the guiding image of V335 Vul (180° rotated view)

The computer which control the observatory is mainly running PRISM v10 software. The screen below shows top:
-the graph showing the maximum ADU around Halpha emission line (a way to control that the spectrum doesn't saturate or that the signal doesn't drop too much - this is a very useful new feature of PRISM)
-the tracking inspector showing the quality of the autoguiding
-guiding camera control panel
-the new electronic finder CMOS camera control panel

and bottom:
-the image of the electronic finder
-the 2D image of the échelle spectrum; the bright spot is the strong Halpha emission but one can also see lot of absorption features
-the dome control panel

 Observatory PC screen (PRISM v10 software)

I took the first 15min spectra and compared them, despite a very low Signal/Noise ratio, there seemed to have some interesting information available:

 The division is mostly flat and the standard deviation is actually the noise of the spectrum - I measured for the 15min exposures a SNR around 11:

Here is the 4h15min total spectrum and a zoom on Halpha and the red portion of the domain covered by the échelle spectrograph: