spectro-aras.com

Hello all, The weather forecast isn't looking good for me at the moment...so when an opportunity presents itself, I can't miss it ! So here's my first T CrB spectrum for the year 2024, obtained with my Alpy 600 on February 28 (resolution of 515, JJ = 2460368.5673) and an acquisition time of 80 min (...

Hello all, I obtained a new spectrum of GK Per with my Alpy 600 on 15 February at 20:28 UT (resolution of 520, JJ = 2459991.3942) with an acquisition time of 80 min (8 x 600s) : _gkper_20230215_894_Christophe Boussin_3700_7565.png gkper_20230207_12_15_Christophe Boussin.png The evolution of the spec...

Hello all, The following spectra were obtained with my Alpy 600 on 7 February at 18:41 UT (resolution of 521, JJ = 2459983.2785) with an acquisition time of 90 min (9 x 600s) and on 12 February at 20:56 UT (resolution of 531, JJ = 2459988.3722) with an acquisition time of 60 min (6 x 600s) : _gkper_...

Hello all, Here, opportunities to observe GK Per are as rare as ever... The following spectrum was obtained on 28 January at 23:39 UT (resolution of 527, JJ = 2459973.4857) with my Alpy 600 and an acquisition time of 50 min (5 x 600s) : _gkper_20230128_986_Christophe Boussin_3700_7565.png gkper_2023...

Hello all, Hi Guillaume, Happy to see a GK Per spectrum from a skilled Star'ex user ;) ! Do you schedule to do frequent observations of GK Per and send your spectra for inclusion in the Aras database ? Again, clear skies for a few hours on Monday evening, just enough time to take a second spectrum o...

Hi all, Congratulations to all the observers !! Finally, a clear sky to observe GK Per... The following spectrum was obtained on 13 January at 19:35 UT (resolution of 540, JJ = 2459958.3156) with my Alpy 600 and an acquisition time of 50 min (5 x 600s) : _gkper_20230113_816_Christophe Boussin_3700_7...

Hello Peter,
I made a request on the spectro-starfinder website and everything worked fine for me !
Spectroscopically,
Christophe

Hi all, With delay, here is a new spectrum of the Nova Cas 2021 obtained the 17th of September at 23 h 07 TU (resolution of 529, JJ = 2459840.4633) with my Alpy 600 and an acquisition time of 40 min (4 x 600s) : _novacas2021_20220917_963_Christophe Boussin_3700_7396.png novacas2021_comparison_Christ...

Hello all,
A paper on KT Eridani (Nova Eri 2009) has just been published :

"The Nova KT Eri Is a Recurrent Nova With a Recurrence Time-Scale of 40-50 Years"
Bradley E. Schaefer, Frederick M. Walter, Rebekah Hounsell, Yael Hillman

https://arxiv.org/abs/2210.10448

Christophe

Hello all, Here is my new contribution to this classification program with DV Aur which is identified as a long period variable in the Simbad database. I obtained the following spectrum of DV Aur the 18th of September at 1 h 52 TU with my Alpy 600 (resolution of 509, JJ = 2459840.5781) and an acquis...