Search found 171 matches
- Thu Feb 29, 2024 4:12 pm
- Forum: Symbiotic Stars
- Topic: T CrB before its new nova event
- Replies: 29
- Views: 16752
Re: T CrB before its new nova event
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 (...
- Sun Feb 19, 2023 7:50 pm
- Forum: Cataclysmic Stars
- Topic: GK Per Outburst
- Replies: 22
- Views: 11868
Re: GK Per Outburst
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...
- Wed Feb 15, 2023 9:18 pm
- Forum: Cataclysmic Stars
- Topic: GK Per Outburst
- Replies: 22
- Views: 11868
Re: GK Per Outburst
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_...
- Sun Feb 05, 2023 7:29 pm
- Forum: Cataclysmic Stars
- Topic: GK Per Outburst
- Replies: 22
- Views: 11868
Re: GK Per Outburst
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...
- Wed Jan 25, 2023 5:28 pm
- Forum: Cataclysmic Stars
- Topic: GK Per Outburst
- Replies: 22
- Views: 11868
Re: GK Per Outburst
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...
- Sun Jan 15, 2023 5:02 pm
- Forum: Cataclysmic Stars
- Topic: GK Per Outburst
- Replies: 22
- Views: 11868
Re: GK Per Outburst
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...
- Wed Nov 16, 2022 8:51 am
- Forum: Spectroscopes and Softwares
- Topic: Spectro-Starfinder - not working?
- Replies: 2
- Views: 2229
Re: Spectro-Starfinder - not working?
Hello Peter,
I made a request on the spectro-starfinder website and everything worked fine for me !
Spectroscopically,
Christophe
I made a request on the spectro-starfinder website and everything worked fine for me !
Spectroscopically,
Christophe
- Sun Nov 06, 2022 2:34 pm
- Forum: Novae
- Topic: Alert! Nova Cas 2021 mag 9
- Replies: 128
- Views: 141219
Re: Alert! Nova Cas 2021 mag 9
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...
- Thu Oct 27, 2022 9:21 pm
- Forum: Astrophysics, Theory, Publications ...
- Topic: KT Eridani (Nova Eri 2009) : new publication
- Replies: 1
- Views: 2211
KT Eridani (Nova Eri 2009) : new publication
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
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
- Sun Sep 18, 2022 5:19 am
- Forum: Symbiotic Stars
- Topic: Suspected/Misclassified Symbiotics: spectra required
- Replies: 128
- Views: 144436
Re: Suspected/Misclassified Symbiotics: spectra required
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...