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Hello all, Here is my new update for the monitoring of the outburst of RS Oph with two new spectra obtained with my Alpy 600. The first one, the 14th of August at 21 h 06 TU (resolution of 521, JJ = 2459441.3793) and an acquisition time of 15 min s (60 x 15 s) : _rsoph_20210814_879_Christophe Boussi...

Hello all, Here is my update for the monitoring of the outburst of RS Oph with a new spectrum obtained the 13th of August at 21 h 56 TU (resolution of 520, JJ = 2459440.4137) with my Alpy 600 and an acquisition time of 375 s (25 x 15 s) : _rsoph_20210813_914_Christophe Boussin_3700_7565.png rsoph_20...

Hello all, Here is my new comparison between my four last spectra of the Halpha line of Nova Cas 2021 at high resolution on August 1st at 1 h 20 TU (resolution of 18775, JJ = 2459427.5557), on August 8 at 1 h 37 TU (resolution of 18785, JJ = 2459434.5672), on August 12 at 0 h 30 TU (resolution of 18...

Hello all, Finally a clear sky to follow the evolution of the RS Oph outburst !! Here is my contribution with a spectrum of the Halpha line at high resolution obtained on August 11 at 22 h 26 TU (resolution of 18696, JJ = 2459438.435) with my LHIRES III (grating of 2400 lines / mm, acquisition time ...

Hello all, Nice spectrum Matthieu, the P Cygni profile is always well visible on the Balmer lines ! Here is my new comparison between my three last spectra of the Halpha line of Nova Cas 2021 at high resolution on July 16 at 22 h 06 TU (resolution of 18731, JJ = 2459412.4209), on July 28 at 22 h 52 ...

Hello all, Here is a small update with one more spectrum before still several days of rain... The spectrum was obtained July 12 at 0 h 10 TU (resolution of 18875, JJ = 2459407.5071) with my LHIRES III (grating of 2400 lines / mm, acquisition time of 60 min for each spectrum (6 x 600s)) and the compa...

Hello all, A new small “weather window”...to follow the evolution of the Halpha line of the Nova Cas 2021 ! Here is my two last spectra at high resolution obtained on July 7 at 1 h 07 TU (resolution of 18932, JJ = 2459402.5464), at 23 h 13 TU (resolution of 18662, JJ = 2459403.4672) and the comparis...

Hello all, Between the clouds , with some luck and perseverance, I succeeded to find a clear sky...for 2 hours ;-) ! So, here is my last spectrum of the Halpha line of Nova Cas 2021 at high resolution on July 1 at 23 h 17 TU (resolution of 18654, JJ = 2459397.4701) and the comparison with the previo...

Hello all, Nice spectra James ! Yes, indeed, 2021 is a great year for the observation of novae ... as well as 2020 ;-) ! Finally a clear sky for a few hours to fill the gap since June 19... So, here is my last spectrum of the Halpha line of Nova Cas 2021 at high resolution on June 29 at 0 h 24 TU (r...

Hi Robin, Thank you for your comment ! Yes, I'm aware that the brigthness of the continuum can vary and that is why I'm talking about relative intensity. Therefore, the variation in the relative intensity of the Halpha line does not indicate, of course, the variation in the intensity of the line but...