Dramatic change of H alpha profile

Campaign on the request of Dr Ausgustin Skopal
H alpha line at R > 10,000
and low res spectra
Olivier Thizy
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Re: Dramatic change of H alpha profile

Post by Olivier Thizy »

Interesting as we have been observing the same target last night - a good way to compare our results... and lot of work for the ARAS database administrator François Teyssier!... specially as we have time series (and time seems very critical on CH Cygni with changes within minutes!) and for the eShel spectrograph data we have a large spectral domain with multiple orders... not easy to handle. Have a thought for him! ;-)

Looking forward for the OHP spectroscopy workshop where people there will certainly talk about CH Cygni and those changes!...

Cordialement,
Olivier Thizy
http://observatoire-belle-etoile.blogspot.fr/
Miguel Rodriguez
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Location: Madrid, Spain

Re: Dramatic change of H alpha profile

Post by Miguel Rodriguez »

Here is my last spectrum from tonight.
Unfortunately I don't have enough time span to monitor profile changes through the night.
Attachments
_ch_cyg_type_zand_20150730_129_Miguel_Rodriguez_6510_6600.png
_ch_cyg_type_zand_20150730_129_Miguel_Rodriguez_6510_6600.png
_ch_cyg_type_zand_20150730_129_Miguel_Rodriguez_6510_6600.png (9.52 KiB) Viewed 13379 times
Olivier Thizy
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Re: Dramatic change of H alpha profile

Post by Olivier Thizy »

Hello,


a single shot tonight as I didn't want to return the mount and reached the limits. But it shows some changes from your spectrum:
CH Cygni preview.JPG
CH Cygni preview.JPG (83.42 KiB) Viewed 13364 times

Cordialement,
Olivier Thizy
http://observatoire-belle-etoile.blogspot.fr/
Francois Teyssier
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Re: Dramatic change of H alpha profile

Post by Francois Teyssier »

AAVSO Light Curve

General trend : decreasing since the beginning of June
CHCyg.png
CHCyg.png (10.59 KiB) Viewed 13344 times
Results from 29th and 30th of july :
_chcyg_20150729_865_full_HaHbHg.png
_chcyg_20150729_865_full_HaHbHg.png (14.7 KiB) Viewed 13344 times
_chcyg_20150730_873_full_HaHbHg.png
_chcyg_20150730_873_full_HaHbHg.png (15.64 KiB) Viewed 13344 times
About lines formation :

- CH Cyg : Introduction to CH Cyg campaign by Dr A. Skopal : http://www.astrosurf.com/aras/novae/Inf ... 015-01.pdf
- Symbiotics : Several texts from Dr S. Shore :
http://www.astrosurf.com/aras/novae/Inf ... 3-2014.pdf

François Teyssier
Miguel Rodriguez
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Joined: Sat May 31, 2014 4:52 pm
Location: Madrid, Spain

Re: Dramatic change of H alpha profile

Post by Miguel Rodriguez »

Spectrum from two hours observation.
Attachments
_ch_cyg_zand_type_20150801_118_Miguel_Rodriguez_6510_6600
_ch_cyg_zand_type_20150801_118_Miguel_Rodriguez_6510_6600
_ch_cyg_zand_type_20150801_118_Miguel_Rodriguez_6510_6600.png (9.01 KiB) Viewed 13327 times
@ch_cyg.gif
@ch_cyg.gif (84.07 KiB) Viewed 13327 times
Olivier Thizy
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Location: in the french Alps...
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Re: Dramatic change of H alpha profile

Post by Olivier Thizy »

Here is an animation (done with SPLAT-VO tool) of CH Cygni Halpha recorded tonight over two hours with C11 + eShel + ST1603:
CHCygni.gif
CHCygni.gif (599.96 KiB) Viewed 13291 times

Cordialement,
Olivier Thizy
http://observatoire-belle-etoile.blogspot.fr/
Nico Montigiani
Posts: 11
Joined: Sat Aug 23, 2014 5:38 pm

Re: Dramatic change of H alpha profile

Post by Nico Montigiani »

Hi to all.
Here is our animation of CH Cygni H alpha line rocorded at the night of 02 Aug 2015 over 2 hours.
Instumentation: Meade SC 10"f/10 + Lhires III 1200 l/mm + CCD SBIG ST10XME
Time of single exposition: 600 min
CH Cyg - 02/08/2015 - Associazione Astrofili Fiorentini
CH Cyg - 02/08/2015 - Associazione Astrofili Fiorentini
CHCyg_anim.gif (74.22 KiB) Viewed 13275 times
Clear sky
Nico Montigiani
Massimiliano Mannucci
Lapo Ferrini
Associazione Astrofili Fiorentini A.A.F., Florence, Italy (mpc code 632)
Francois Teyssier
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Re: Dramatic change of H alpha profile

Post by Francois Teyssier »

Nice Nico ! You can send me the spectra.

CH Cyg to night
Almost constant
chcyg_ha_20150805.png
chcyg_ha_20150805.png (17.35 KiB) Viewed 13267 times
François
Olivier GARDE
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Re: Dramatic change of H alpha profile

Post by Olivier GARDE »

A time serie spectra taken just after Olivier Thizy sequence.
3H30 long : A total of 71 spectra of 180s each with eshal spectrograph.

I have also the same animation for H beta and H gamma

Image
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
Olivier Thizy
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Re: Dramatic change of H alpha profile

Post by Olivier Thizy »

Here is an animation of the night of august 6th and one from last night (data reduction in ISIS, animation in SpecAudace with 'norma' option):

CH_Cygni_20150806_anim.gif
CH_Cygni_20150806_anim.gif (371.44 KiB) Viewed 13214 times
CH_Cygni_20150807_anim.gif
CH_Cygni_20150807_anim.gif (375.43 KiB) Viewed 13214 times

Equipment: C11 + eShel


Cordialement,
Olivier Thizy
http://observatoire-belle-etoile.blogspot.fr/
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